Cage control valve leakage treatment

An Overview

    FV-201 anti-surge control valve is concentrated nitric workshop production of a very important field of a regulating valve , if leaking spool valve, process gas in the NO ₂ gas directly into the exhaust through the regulating valve, so that the exhaust gas in NO ₂ gas concentration excessive emissions, reach environmental requirements. In the November 3, 2010, concentrated nitric sudden increase in the concentration of exhaust workshop, rising from about 100ppm to 600ppm or so, after professional and technical staff to discuss, analyze, judge, agreed that the exhaust gas concentration causes the spool valve FV-201 causing a leak. In order to discharge the requirements of environmental protection, it is necessary to FV-201 control valve for maintenance treatment, the regulating valve leakage reached Ⅴ grade level requirements.

    2 valve structure

    Valve FV-201 manufactured by CCI cage cylinder straight travel valve, the medium flow is low prices, in use, because the original balanced valve plug easily damaged O-ring problem, after the factory will balance structure changed to a non-balanced, and by calculating the existing double-acting cylinder diameter and supply pressure used under unbalanced, still meet the conditions regulating valve under pressure in grade Ⅴ leakage class requirements. Regulating valve seal in the form of single-seat metal seal, linear flow characteristics, nominal diameter DN250, CV value of 900, the cage is designed to reduce the fluid noise porous buck. Double-acting cylinder actuator is equipped with a gas tank, make sure the valve in case of interruption of gas supply can also be emergency opening, to prevent compressor surge occurs.

    3 FV-201 control valve leaks and leakage checks

    3.1 leak check

    Produced in the process with the maintenance stop condition, the FV-201 with inlet and outlet valve regulating valve inlet flange removal separate blind blind flange with DN250 good regulator valve inlet, and add 0.30MPa instrument air source, valve seat, valve parts with soapy water leak, leak observed to determine whether the spool wire seal leaks, or leakage at the valve seat gasket.

    Through the inspection, there is no leakage at the valve seat gasket, leak hole in the cage, and are therefore determined to be in the spool seal leakage.

    3.2 Water pressure leak test

    According GB/T17213.4-2005 "Industrial Control Valves inspection and routine testing in Part IV: Inspection and routine testing" standard leak test, control valve inlet valve cavity to be 0.30MPa irrigation water pressure leak test, collected at the outlet valve leakage of water (see Figure 1), the leakage amounted to 2200ml/min, a large amount of the control valve leakage.

Figure 1 just off valve leaks when pressure test

    According GB/T17213.4-2005 "Industrial Control Valves inspection and routine testing in Part IV: Inspection and routine testing" in 7.3.3 leak specifications, calculate FV-201 control valve hydraulic test Ⅴ grade level requirements leak leak volume. Table 1.

Table 1 FV-201 control valve hydraulic test Ⅴ grade level leakage leakage

    Since FV-201 hydraulic test amount of leakage is 2200ml/min, far greater than Grade Ⅴ valve leakage level required amount of leakage 0.225ml/min, so the need for valve leakage for processing.

FQ647F_16C pneumatic coal injection valve DN32 Design

 Valve models should normally be expressed valve type, drive type, connection type, structural features, sealing surface material, body material and nominal pressures and other factors.Standardization of valve type valve design, selection, sales provides a convenient. Today the type of valve and materials more and more, the valve for the model is more complicated. Although the preparation of a unified standard valve type, but can not meet the growing needs of the development of industrial valves. At present, the valve manufacturer generally uniform numbering method, where the method can not be used uniform numbers, each manufacturer according to their needs develop numbering method. FQ647F-16C pneumatic coal injection valve model based on national standards and the development of methodologies Shantou valve plant shown in Figure 1.

Figure 1 valve type arrangement

     

    Two pairs of valve performance requirements

    FQ647F-16C pneumatic coal injection valve DN32 with reference to international advanced design and manufacture of the prototype of the new structure dedicated coal injection valve, is the metallurgical blast furnace pulverized coal injection system on the device-specific accessories. In order to meet different specifications, different kinds of steel, coal injection valve by turning the blast furnace pulverized coal combustion play a role in raising the temperature of the blast furnace, coal injection system must be ready quickly open and close in order to meet the temperature requirements, and its rapid opening , turn-off is controlled by the computer to achieve. Therefore, pulverized coal pneumatic valve must have the following three characteristics:

    (1) The response speed required to complete in 1 ~ 2s open and close operation to meet the requirements of automatic control computer;

    (2) to stabilize the pressure in the pressure pipe and pipe medium coal incidental leakage of harmful gases, so pneumatic coal injection valve does not leak;

    (3) To protect the sealing surface being pulverized coal injection erosion and wear, do not appear sealing surface strain and stuck (rotation is not flexible) phenomenon, so you must use the fully open or fully closed, prohibited by throttling.

    Three ball design

    3.1 Work

    The ball valve body and the pneumatic device by the two parts. Opening and closing movement by pneumatic actuator - cylinder driven valve stem rotation, so as to drive the ball forward and reverse rotation 90 ° to achieve.

    To open the valve (that is, the sphere diameter flange diameter on the same axis), the compressed air from the actuator of the A-side air intake, push the piston moves backward, the piston rod driven through the turn crank lever rotation, and between the lever and the valve stem cap connected to the use of square, the turn lever is rotated, following the rotation of the stem, but also led to the sphere is rotated clockwise 90 °, so that the valve in the through state, the pressure medium in the pipeline coal through the blast furnace pulverized coal injection valve. When the valve opening, as shown in Figure 2.

Figure 2 valve opening

Figure 3 valve off

    Conversely, to close the valve when the inlet from the B-side, the piston moves forward, driving the ball rotated counterclockwise 90 °, the valve is closed, as shown in Figure 3.

    While the valve is in the fully open or fully closed state, the need to adjust the pneumatic actuator positioning adjustment screws on the two, you can make the ball was fully open or fully closed.

    3.2 Ball Structure Description

    3.2.1 fixed dome structure (shaft-supported)

    To reduce the valve operating torque and enhanced reliability of sealing and avoid compression of the ball is displaced, and the outlet end of the first sealing surface wear, so the ball valve the fixed structure, its structure is shown in Figure 4, which uses The lower shaft of the ball the ball fixed (stem, the sphere and the centerline of the shaft must be on the same axis). Structure in the form of fixed ball valve comes with floating seat, or pressure in the sphere rotates, the valve seat moves, seals are pressed onto the ball, in order to ensure sealing. Usually with the ball of the upper and lower shaft with bronze sleeve bearings or self-lubricating bearings, reduce operating torque.

Figure 4 fixed ball structure

    3.2.2 sealing structure

1 sphere 2 ring 3. Seat 4.O-ring 5 disc spring 6. Adjustable pads 7. Flange

Figure 5 sealing structure

    The sealing structure of the valve shown in Figure 5. Tight seal 2 3 mounted on the seat, the seat 3 in the flange 7 4 sealed by O-rings, seals and 2 by means of disc springs 5 pre-compacted in a sphere, adjust the adjusting shim 6, I can adjust the tight sealing surface than the pressure. To the disc spring seal structure, with a sealing action with automatic compensation. The seal between the gasket and the ball except the pre-compacted by the coned disc spring to ensure sealing, the still rely DWN and seat ring outer diameter D _JH loop area formed by the pressing force of the ball on the medium to achieve the seal, seal Reliability depends largely on the average diameter of the sealing surface D _MP and the valve seat diameter D _JH ratio. If D _JH / DMP value is not large enough, the ball will not be able to ensure a reliable seal; if D _JH / D _MP value is too large, it will cause an overload sealed, leaving the valve switching torque increases, accelerated wear and tear.

http://higeroindustry.com/

What Is A Control Valve?

From  http://www.higeroindustry.com/

Process plants consist of hundreds, or even thousands, of control loops all networked together to produce a product to be offered for sale. Each of these control loops is designed to keep some important process variable such as pressure, flow, level, temperature, etc. within a required operating range to ensure the quality of the end product. Each of these loops receives and internally creates disturbances that detrimentally affect the process variable, and interaction from other loops in the network provides disturbances that influence the process variable.

To reduce the effect of these load disturbances, sensors and transmitters collect information about the process variable and its relationship to some desired set point. A controller then processes this information and decides what must be done to get the process variable back to where it should be after a load disturbance occurs. When all the measuring, comparing, and calculating are done, some type of final control element must implement the strategy selected by the controller. The most common final control element in the process control industries is the control valve. The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point.

Many people who talk about control valves or valves are really referring to a control valve assembly. The control valve assembly typically consists of the valve body, the internal trim parts, an actuator to provide the motive power to operate the valve, and a variety of additional valve accessories, which can include positioners, transducers, supply pressure regulators, manual operators, snubbers, or limit switches. Whether it is called a valve, control valve or a control valve assembly is not as important as recognizing that the control valve is a critical part of the control loop. It is not accurate to say that the control valve is the most important part of the loop. It is useful to think of a control loop as an instrumentation chain. Like any other chain, the whole chain is only as good as its weakest link. It is important to ensure that the control valve is not the weakest link. Following are definitions for process control, sliding-stem control valve, rotary-shaft control

Sliding-Stem Control Valve Terminology (Part 1)

Actuator Spring: A spring, or group of springs, enclosed in the yoke or actuator casing that moves the actuator stem in a direction opposite to that created by diaphragm pressure.

Actuator Stem: The part that connects the actuator to the valve stem and transmits motion (force) from the actuator to the valve.

Actuator Stem Extension: An extension of the piston actuator stem to provide a means of transmitting piston motion to the valve positioner

Actuator Stem Force: The net force from an actuator that is available for actual positioning of the valve plug.

Angle Valve: A valve design in which one port is co-linear with the valve stem or actuator, and the other port is at a right angle to the valve stem.

Bellows Seal Bonnet: A bonnet that uses a bellows for sealing against leakage around the closure member stem

Bonnet: The portion of the valve that contains the packing box and stem seal and can guide the stem. It provides the principal opening to the body cavity for assembly of internal parts or it can be an integral part of the valve body. It can also provide for the attachment of the actuator to the valve body. Typical bonnets are bolted, threaded, welded, pressure-seals, or integral with the body. (This term is often used in referring to the bonnet and its included packing parts. More properly, this group of component parts should be called the bonnet assembly.)

Bonnet Assembly: (Commonly Bonnet, more properly Bonnet Assembly): An assembly including the part through which a valve stem moves and a means for sealing against leakage along the stem. It usually provides a means for mounting the actuator and loading the packing assembly.

Bottom Flange: A part that closes a valve body opening opposite the bonnet opening. It can include a guide bushing and/or serve to allow reversal of the valve action.

Bushing: A device that supports and/ or guides moving parts such as valve stems.

Cage: A part of a valve trim that surrounds the closure member and can provide flow characterization and/or a seating surface. It also provides stability, guiding, balance, and alignment, and facilitates assembly of other parts of the valve trim. The walls of the cage contain openings that usually determine the flow characteristic of the control valve.

Closure Member: The movable part of the valve that is positioned in the flow path to modify the rate of flow through the valve.

Closure Member Guide: That portion of a closure member that aligns its movement in either a cage, seat ring, bonnet, bottom flange, or any two of these.

Cylinder: The chamber of a piston actuator in which the piston moves

Cylinder Closure Seal: The sealing element at the connection of the piston actuator cylinder to the yoke.

Diaphragm: A flexible, pressure responsive element that transmits force to the diaphragm plate and actuator stem.

Diaphragm Actuator: A fluid powered device in which the fluid acts upon a flexible component, the diaphragm.

Diaphragm Case: A housing, consisting of top and bottom section, used for supporting a diaphragm and establishing one or two pressure chambers.

Diaphragm Plate: A plate concentric with the diaphragm for transmitting force to the actuator stem.

Direct Actuator: A diaphragm actuator in which the actuator stem extends with increasing diaphragm pressure.

Extension Bonnet: A bonnet with greater dimension between the packing box and bonnet flange for hot or cold service.

Sliding-Stem Control Valve Terminology (Part 2)

Globe Valve: A valve with a linear motion closure member, one or more ports, and a body distinguished by a globular shaped cavity around the port region. Globe valves can be further classified as: two-way single-ported; two-way double-ported; angle-style ; three-way ; unbalanced cage-guided ; and balance cage-guided.

Lower Valve Body: A half housing for internal valve parts having one flow connection. The seat ring is normally clamped between the upper valve body and the lower valve body in split valve constructions.

Offset Valve: A valve construction having inlet and outlet line connections on different planes but 180 degrees opposite each other.

Packing Box (Assembly): The part of the bonnet assembly used to seal against leakage around the closure member stem. Included in the complete packing box assembly are various combinations of some or all of the following component parts: packing, packing follower, packing nut, lantern ring, packing spring, packing flange, packing flange studs or bolts, packing flange nuts, packing ring, packing wiper ring, felt wiper ring, belleville springs, anti-extrusion ring.

Piston: A movable pressure responsive element that transmits force to the piston actuator stem

Piston Type Actuator: A fluid powered device in which the fluid acts upon a movable piston to provide motion to the actuator stem. Piston type actuators are classified as either double-acting, so that full power can be developed in either direction, or as spring-fail so that upon loss of supply power, the actuator moves the valve in the required direction of travel.

Plug: A term frequently used to refer to the closure member.

Port: The flow control orifice of a control valve.

Retaining Ring: A split ring that is used to retain a separable flange on a valve body.

Reverse Actuator: A diaphragm actuator in which the actuator stem retracts with increasing diaphragm pressure. Reverse actuators have a seal bushing installed in the upper end of the yoke to prevent leakage of the diaphragm pressure along the actuator stem.

Rubber Boot: A protective device to prevent entrance of damaging foreign material into the piston actuator seal bushing.

Seal Bushing: Top and bottom bushings that provide a means of sealing the piston actuator cylinder against leakage. Synthetic rubber O-rings are used in the bushings to seal the cylinder, the actuator stem, and the actuator stem extension.

Seat: The area of contact between the closure member and its mating surface that establishes valve shut-off.

Seat Load: The net contact force between the closure member and seat with stated static conditions. In practice, the selection of an actuator for a given control valve will be based on how much force is required to overcome static, stem, and dynamic unbalance with an allowance made for seat load.

Seat Ring: A part of the valve body assembly that provides a seating surface for the closure member and can provide part of the flow control orifice.

Separable Flange: A flange that fits over a valve body flow connection. It is generally held in place by means of a retaining ring.

Spring Adjustor: A fitting, usually threaded on the actuator stem or into the yoke, to adjust the spring compression.

Spring Seat: A plate to hold the spring in position and to provide a flat surface for the spring adjustor to contact.

Static Unbalance: The net force produced on the valve stem by the fluid pressure acting on the closure member and stem with the fluid at rest and with stated pressure conditions.

Stem Connector: The device that connects the actuator stem to the valve stem.

Trim: The internal components of a valve that modulate the flow of the controlled fluid. In a globe valve body, trim would typically include closure member, seat ring, cage, stem, and stem pin.

Trim, Soft-Seated: Valve trim with an elastomeric, plastic or other readily deformable material used either in the closure component or seat ring to provide tight shutoff with minimal actuator forces.

Upper Valve Body: A half housing for internal valve parts and having one flow connection. It usually includes a means for sealing against leakage along the stem and provides a means for mounting the actuator on the split valve body.

Valve Body: The main pressure boundary of the valve that also provides the pipe connecting ends, the fluid flow passageway, and supports the seating surfaces and the valve closure member. Among the most common valve body constructions are:

a) single-ported valve bodies having one port and one valve plug;
b) double-ported valve bodies having two ports and one valve plug;
c) two-way valve bodies having two flow connections, one inlet and one outlet;
d) three-way valve bodies having three flow connections, two of which can be inlets with one outlet (for converging or mixing flows),

or one inlet and two outlets (for diverging or diverting flows). The term valve body, or even just body, frequently is used in referring to the valve body together with its bonnet assembly and included trim parts. More properly, this group of components should be called thevalve body assembly.

Valve Body Assembly (Commonly Valve Body or Valve, more properly Valve Body Assembly): An assembly of a valve, bonnet assembly, bottom flange (if used), and trim elements. The trim includes the closure member, which opens, closes, or partially obstructs one or more ports.

Valve Plug: A term frequently interchanged with plug in reference to the closure member.

Valve Stem: In a linear motion valve, the part that connects the actuator stem with the closure member.

Yoke: The structure that rigidly connects the actuator power unit to the valve.

Solenoid valve

  Solenoid valve is used to control the automation of basic components of fluid, is actuator; not limited to hydraulic, pneumatic. Solenoid valve used to control the direction of hydraulic flow machines in plant generally controlled by hydraulic cylinder, the solenoid valve will be used. 
    The working principle of electromagnetic valve, solenoid valve in a closed chamber, in a different position with holes, each hole leads to a different pipeline, valve chamber in the middle, both sides are two electromagnets, which side of the magnet coil power valve will be attracted to which side, by controlling the body's movement to a different file live or leaked oil discharge hole, and into the hole is always open, hydraulic oil flows to different hoses, and then oil pressure to push oil just the piston, piston rod then drive the piston rod drive mechanism moving. This current by controlling the electromagnet to control the mechanical movement. 
http://www.higeroindustry.com/

RF Waveguide Vacuum Valve

Description

The device enables low-loss Radio Frequency power transmission in a waveguide across a gap, where a liftable instrument is positioned. Originally designed with a wall as the instrument making the device function as a valve, to solve the problem of maintaining vacuum on one side and atmospheric pressure on the other side. When the system is in operation and the valve is open, the technology provides low-loss high power RF transmission.
In order to maintain one part of a RF system evacuated while doing installation and maintenance on the other part, dielectric windows are normally used. High power RF makes the dielectric break down and windows can therefore not be used. The RF waveguide vacuum valve was developed for CERN’s CLIC project to maintain vacuum and to reduce maintenance costs.

Area of expertise

Mechanics

Applications

• Waveguide systems - Medical and Industrial field and Scientific accelerator.
• Satellite & Space Research - The technology may be used to evacuate RF satellite systems using vacuum, in space.

Innovative features

No surface electric field in the waveguide section because of TE0n mode conversion, which increases the potential of high power RF transmission because of low loss.

Specifications

A 30 GHz dual-mode vacuum valve with an overall length of 100 mm and a diameter of the central waveguide section, that contains the TE01+TE02 mode mixture, of 30 mm the transmission measurements show losses of about -0.1dB. These losses consist of two contributions: diffraction losses of -0.033dB and ohmic losses of -0.049dB.

Advantages

• The possibility to use a commercially available vacuum valve in waveguides where high-power – high-frequency is used.
• Low loss.
• There are no limitations on the frequency range of the technology. This technology can be used from the lowest frequencies under which vacuum waveguides are used up to quasi-optical transmission lines.
• The technology can be a clean environmental friendly alternative to the use of SF6, a highly potent green house gas.

Intellectual Property status

The technology has been proven by simulations of different frequencies (from 3 to 30 GHz) and a prototype for 30 GHz has been built. An international patent application is filed and the technology is ready for licensing.

下载http://knowledgetransfer.web.cern.ch/sites/knowledgetransfer.web.cern.ch/files/technology_brief/RFWaveguideVacuumValve.pdf

Triple Offset, Metal-Seated Butterfly Valves - Principle Of Operation

The NVF Triple Offset butterfly valve provides a bi-directional bubble tight shut-off. This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure a uniform seal contact.

THE TRIPLE OFFSET GEOMETRY

OFFSET 1	The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat
OFFSET 2	The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve
OFFSET 3	The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.

 Friction Free Sealing For Long Cycle Life

NVF provides an extra rigid retaining ring with bolting, resulting from ASME stress calculations. (1) Seat is hardfaced with Stellite as standard. (2) The gasket is spiral wound SS/Graphite for zero leakage

THE LAMINATED DISC SEAL Seating forces are generated by the torque during closing uniformly around the entire circumference. The resilient seal flexes and energizes, assuming the shape of the seat. The compression forces equally distributed around the perimeter provide a tight bi-directional shut off. The resiliency of the seal allows the valve body and disc to contract or expand, without the risk of jamming due to temperature fluctuations. It is self-adjusting.

From:  valve knowledge

Valves & Actuators 101 Course Set for Valve World Americas Event

The second Valve World Americas 2013 Expo & Conference begins at Houston’s George R. Brown Convention Center on June 25, 2013, but the great opportunities for learning start even before the conference.

Greg JohnsonThe Valve Manufacturers Association (VMA) is offering a one-day version of its Valves & Actuators 101 education program, designed to jump-start the career of industry newcomers or provide a refresher on valve, actuator and control basics. VMA member presenters will discuss the major valve and actuator types from 9 am to 5 pm on Monday, June 24.

The 2013 Valve World Americas Expo & Conference is the perfect complement to the valves and actuators course as it will provide an American-focused platform for the ongoing technical and commercial exchange of information and experiences on the latest technologies, developments and products for the valve industry.

The conference will feature workshops on topics including material selection, fugitive emissions, fitness for service, updates in cryo technology, unconventional energy and more. Each day has keynote sessions on topics such as the general outlook on energy and new challenges in the field.

Additionally, 147 exhibitors from 15 countries will be displaying at the expo, presenting a complete spectrum of innovations for this sector, ranging from valves, valve-related products and valve-related piping products to seals and sealing materials, engineering and leak detection, and valve repair services. In addition to exhibits hosted by a number of VMA members, Valve Manufacturers Association staff will be on hand to answer questions about the association, and distribute copies of VALVE Magazine and the latest Valve Catalog.

Visit the Valve World Americas website and register for the 101 course by June 19. The cost is $450 and attendees receive a VMA Certificate of Completion for six continuing education hours, CD with presentations, lunch and afternoon snack, plus complimentary entrance to the Valve World Americas Expo.

Two-day 101 Course to Take Place in November

Later this year, VMA will conduct its full two-day Valves & Actuators 101 course, Nov. 6-7, 2013, at Harrah’s in New Orleans. The Valve Basics Seminar & Exhibits has been expanded and, in addition to the regular program, now includes lessons on Solenoids & Limit Switches, and Positioners & Accessories. The popular "Valve Petting Zoo” and a table-top exhibition also will take place.

More than 750 people have attended VMA’s Valves & Actuators 101 course since it was introduced in late 2009. VMA will soon release an online, narrated version of the course to provide even more access to this vital, entry-level education.

For more information and online registration, visit VMA.org > Meetings > Basics Seminar & Exhibits. The cost is $665 through Aug. 31, and then rises to $700. The fee includes a VMA Certificate of Completion awarding 12 continuing education hours, a manual with presentations and notes, breakfasts, lunches, snacks and a reception. For more information, contact Judy Tibbs, VMA director of education.

JIS Butterfly valve - higero valves

JIS Butterfly valve

Detailed

Product Name：	Japanese standard butterfly valve
Product Type：	D373H
Suitable medium ：	Water, steam, oil, water, etc.
Caliber：	DN40-600
Product pressure：	0.6~6.4Mpa
Material：	Steel, stainless steel, etc.
Suitable temperature：	-29～550℃

Souce: http://www.higeroindustry.com/products/butterfly-valve/JIS-Butterfly-Valve.html

Web:http://higeroindustry.com

日标硬密封用途及特点： 

D373H-10K、20K、和D343H-10K、20K系列的主要结构特征为对夹式和法兰式三偏心密封形式，阀座密封圈采用弹性密封和软硬兼容的多层次密封两种结构，其密封性能可靠。确保开启时蝶板不接触密封座，消除了密封座不均匀负载，延长了使用寿命，确保可靠的密封性能，具有耐高温、耐磨损、耐腐蚀等优点。广泛应用于石油、化工及工业环保水处理、高层建筑、给排水等管道上。

日标硬密封采用标准：

设计标准： APl609-1983
法兰连接尺寸： JIS B2212；JlS B2213；JIS B2214
结构长度： JlS B2002-1987；
压力试验： JlS B2003-1987；

日标硬密封主要技术参数：

公称通径 DNmm 2″～48″ 2″～48″ 公称压力 PNMPa 10K 20K 试验压力 PsMPa 强度试验 1.5 3．0 密封试验 1.1 2．2 适用介质 水、蒸汽、油品、海水等 适用温度 -29～550℃

日标硬密封主要零件的材质：

零件名称 材料 阀体 WCB、304、316、316SS、CF8M 阀板 WCB、304、316、316SS、CF8M 阀杆 304、316、2Crl3、1Crl8Ni9Ti 密封圈 304、316、氟塑料 填料 柔性石墨、氟塑料 传动方式 手柄、蜗轮、气动、电动等 D37/3/5H-10K、20K系列日标硬密封 公称通径 结构长度 标准值 外形尺寸参考值 连接尺寸标准值 H D373H D673H D973H 10K 20K mm inch L H1 A1 B1 H2 A2 B2 H3 A3 B3 D1 Z-d D1 Z-d 50 2 43 112 350 180 200 625 245 72 530 250 255 120 4-19 120 8-19 65 21/2 46 115 370 180 200 625 245 72 530 250 255 140 4-19 140 8-19 80 3 49 120 380 180 200 645 245 72 565 250 255 150 8-19 160 8-23 100 4 56 138 420 180 200 675 355 92 600 250 255 175 8-19 185 8-23 125 5 64 164 460 180 200 715 355 92 640 250 255 210 8-23 225 8-25 150 6 70 175 555 270 280 800 355 92 705 300 315 240 8-23 260 12-25 200 8 71 208 605 270 280 850 250 170 775 300 315 290 12-23 305 12-25 250 10 76 243 680 270 280 925 250 170 945 300 315 355 12-25 380 12-27 300 12 83 283 800 380 420 1035 450 220 1070 300 315 400 16-25 430 16-27 350 14 92 310 835 380 420 1070 450 220 1140 300 315 445 16-25 480 16-33 400 16 102 340 915 450 470 1190 450 220 1210 300 315 510 16-27 540 16-33 450 18 114 380 960 480 490 1250 650 280 1335 575 714 565 20-27 605 20-33 500 20 127 410 1020 480 490 1290 650 280 1415 575 714 620 20-27 660 20-33 600 24 154 470 1225 480 490 1455 850 380 1605 656 810 730 24-33 770 24-39 700 28 165 550 1355 640 660 1585 850 380 1844 656 810 840 24-33 900 24-48 800 32 190 640 1470 640 660 1700 1250 380 2040 656 810 950 28-33 1030 24-56 900 36 203 710 1545 750 860 1965 1250 380 2255 785 863 1050 28-33 1140 28-56 1000 40 216 770 1 795 850 900 2015 1250 380 2380 785 863 1160 28-39 1200 48 254 890 1965 850 900 2250 1250 380 2640 785 863 1380 32-39 D34/3/5H-10-K、20K系列日标硬密封 公称通径 结构长度 标准值 外形尺寸参考值 连接尺寸标准值 L H D343H D643H D943H 10K 20K mm inch 短 长 H1 A1 B1 H2 A2 B2 H3 A3 B3 D D1 Z-d D D1 Z-d 50 2 108 150 112 350 180 200 605 245 72 530 250 255 155 120 4-19 155 120 8-19 65 21/2 112 170 115 370 180 200 625 245 72 530 250 255 175 140 4-19 175 140 8-19 80 3 114 180 120 380 180 200 645 245 72 565 250 255 185 150 8-19 200 160 8-23 100 4 127 190 138 420 180 200 675 355 92 600 250 255 210 175 8-19 225 185 8-23 125 5 140 200 164 460 180 200 715 355 92 640 250 255 250 210 8-23 270 225 8-25 150 6 140 210 175 555 270 280 800 355 92 705 300 315 280 240 8-23 305 260 12-25 200 8 152 230 208 605 270 280 850 250 170 775 300 315 330 290 12-23 350 305 12-25 250 10 165 250 243 680 270 280 925 250 170 945 300 315 400 355 12-25 430 380 12-27 300 12 178 270 283 800 380 420 1035 450 220 1070 300 315 445 400 16-25 480 430 16-27 350 14 190 290 310 835 380 420 1070 450 220 1140 300 315 490 445 16-25 540 480 16-33 400 16 216 310 340 915 450 470 1190 450 220 1210 300 315 560 510 16-27 605 540 16-33 450 18 222 330 380 960 480 490 1250 650 280 1335 575 714 620 565 20-27 675 605 20-33 500 20 229 350 410 1020 480 490 1290 650 280 1415 575 714 675 620 20-27 730 660 20-33 600 24 267 390 470 1225 480 490 1455 850 380 1605 656 810 795 730 24-33 845 770 24-39 700 28 292 430 550 1355 640 660 1585 850 380 1844 656 810 905 840 24-33 995 900 24-48 800 32 318 470 640 1470 640 660 1700 1250 380 2040 656 810 1020 950 28-33 1140 1030 24-56 900 36 330 510 710 1545 850 900 1865 1250 380 2255 785 863 1120 1050 28-33 1250 1140 28-56 1000 40 410 550 770 1795 850 900 2015 1500 580 2380 785 863 1235 1160 28-39 1200 48 470 630 890 1965 850 900 2226 1500 580 2640 785 863 1465 1380 32-39