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Pneumatic diaphragm three-way on/off control valve

Pneumatic diaphragm three-way on/off control valve

Overview of ZX pneumatic diaphragm three way control valve: ZX new series pneumatic diaphragm three-way control valve adopts cylindrical thin-wall window valve core guide,which is different from the bushing guide of plunger valve core.Equipped with multi spring actuator.ZX type pneumatic diaphragm control valve has the advantages of simple structure,light weight,small volume and convenient disassembly.Widely used in accurate control of gas,liquid and other media,process parameters such as pressure,flow,temperature,liquid level to maintain a given value.The utility model is suitable for the occasions where one fluid flows out in two paths through the three-way valve or two fluids are combined into one fluid through the three-way valve. This series of products have two kinds of three-way confluence (ZXQ) and three-way shunt (ZXX). The nominal pressure rating is 1.6, 4.0 and 6.4Mpa, and the diameter range of valve body is DN25-200. The applicable fluid temperature ranges from - 60℃ to + 450℃.The leakage standard is grade IV.There are two kinds of flow characteristics:straight line and parabola.

  • Item NO.:

    XUVAL77-27
  • Lead Time:

    45Days
  • Product Orgin:

    CHINA
  • Brand:

    XUVAL
  • Shipping Port:

    Shanghai
  • Payment:

    100%TT
  • Color:

    silvery
  • MOQ:

    10
Products Details

Pneumatic diaphragm three-way on/off control valve


Overview of ZX pneumatic diaphragm three way control valve:

ZX new series pneumatic diaphragm three-way control valve adopts cylindrical thin-wall window valve core guide,which is different from the bushing guide of plunger valve core.Equipped with multi spring actuator.ZX type pneumatic diaphragm control valve has the advantages of simple structure,light weight,small volume and convenient disassembly.Widely used in accurate control of gas,liquid and other media,process parameters such as pressure,flow,temperature,liquid level to maintain a given value.The utility model is suitable for the occasions where one fluid flows out in two paths through the three-way valve or two fluids are combined into one fluid through the three-way valve.

This series of products have two kinds of three-way confluence (ZXQ) and three-way shunt (ZXX). The nominal pressure rating is 1.6, 4.0 and 6.4Mpa, and the diameter range of valve body is DN25-200. The applicable fluid temperature ranges from - 60℃ to + 450℃.The leakage standard is grade IV.There are two kinds of flow characteristics:straight line and parabola.

           


Characteristics of ZX pneumatic diaphragm three way control valve:
The flow direction of the fluid acting on the valve core is in the open state,so the valve can work stably.
In addition to the guide of the bushing at the upper valve cover,the side of the valve core and the inner surface of the valve seat also have a guiding effect,with large guiding area and reliable operation.
The actuator adopts multi spring structure,which reduces the height by 30% and the weight by 30%.


Material of main parts of ZX pneumatic diaphragm three way control valve:
Valve body and cover:HT200,ZG230-450,ZG1Cr18Ni9Ti
Valve core and seat:1Cr18Ni9Ti
Corrugated diaphragm:NBR clip reinforced polyester fabric
Packing: PTFE,flexible graphite
Spring:60Si2Mn
Membrane cover:A3
Push rod and stem:2Cr13,1Cr18Ni9Ti
Bushing:2Cr13
Gasket:Rubber asbestos board,10,1Cr18Ni9Ti,asbestos spiral wound gasket


Specifications and technical parameters of ZX pneumatic diaphragm three way control valve:

Nominal diameter DN(mm) 25 32 40 50 65 80 100 125 150 200
Rated flow coefficient Kv Confluence 8.5 13 21 34 53 85 135 210 340 535
Shunt 8.5 13 21 34 53 85 135 210 340 535
Rated travel L(mm) 16 25 40 60
Effective area of diaphragm Ae(cm2) 280 400 600 1000
Nominal pressure PN(MPa) 1.6、4.0、6.4
Inherent flow characteristics Straight line, parabola
Inherent adjustable ratio R 30
Working temperaturet(℃) Common type:cast iron-20 ~ 200 cast steel-40 ~ 250 cast stainless steel-60 ~ 250
Heat dissipation type:cast steel-40 ~ 450,cast stainless steel-60 ~ 450
Temperature difference between two media t(℃) Cast iron ≤ 150,cast steel ≤ 200
Signal range Pr(kPa) 40~200
Air pressure Ps(MPa) 0.14~0.4
Allowable leakage 10-4 × valve rated capacity
Allowable pressure difference △ p(MPa) 0.86 0.75 0.48 0.31 0.27 0.18 0.11 0.12 0.09 0.05
The performance index of this product is in accordance with GB/T4213-92 standard


Dimensions and weight of ZX pneumatic diaphragm three way control valve (unit: mm)

Nominal diameter 25 32 40 50 65 80 100 125 150 200
A 282 306 306 306 394 394 394 498 498 498
H1 PN16 121 130 140 153 178 190 200 260 320 360
PN40 130 140 150 160 185 200 220 280 320 380
PN64 160 170 180 200 230 250 282 310 430 480
H Common type PN16 PN40 490 480 540 580 710 730 750 895 1005 1045
PN64 560 561 596 630 760 798 876 892 1200 1263
High temperature type 600 615 650 670 850 870 900 1040 1330 1370
heavy

amount

(kg)

Common type PN16 PN40 21 23 33 36 64 72 92 155 193 286
PN64 25 28 40 45 74 85 112 180 243 336
High temperature type Weight gain (5-10)%

Note: 1.The height and weight of high temperature type in this table are based on PN16.


2.The height of the mechanism with hand wheel should be increased by 152 (DN20-50),182 (DN65-100),253 (DN 125-200)

             


Connection dimension and standard of ZX pneumatic diaphragm three way control valve:

Flange standard:cast iron flange according to GB4216.5-84
Cast steel flange according to GB9113-88,JB/T79.1-94
Flange sealing surface type:PN10,PN16 are convex surface
PN40 and pn64 are concave and convex,and the valve body is concave.
Structure length:according to the standard of GB12221-89
Diaphragm actuator gas signal interface: internal thread M16 × 1.5
Jacket thermal insulation jacket heat carrier interface:butt welding φ 18 × 4
the valve body flange and flange end face distance can be manufactured according to the user specified standard.Such as:ANSI,JIS,DIN and other standards.


Packing & Delivery : 
Packing Details:all by seaworthy plywood case and packed strongly by packing belt as below
Delivery Details:Generally it is 5-10 days if the goods are in stock. or15-30 days if the goods are OEM or not
enough subject to the order quantity. But anyway, normally, we are able to make sure the delivery will not exceed 45days.


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