Pneumatic Film Three-way Confluence and Shunt-off Regulating Valve
Description:
A, use:
ZJHQ, ZJHX seriesPneumatic diaphragm three confluence, shunt valveThe cylinder shaped valve type thin window guide, the guide bushing is different from the plunger shaped spool.Equipped with multi spring actuator, has the advantages of simple structure, light weight, small volume, convenient disassembly and assembly etc..Widely used in the precise control of the gas and liquid medium in the process such as pressure, flow, temperature, liquid level is maintained at a given value.Suitable for a fluid through a three-way valve into the road or the outflow of both fluid through a three-way valve into the fluid situation.
This series of products are three confluence and three shunt two.Nominal pressure PN16, 40, 64; nominal diameter range of DN25 ~ 300.Application of fluid temperature from -60 DEG to +450 DEG C.Leakage standard IV.Flow characteristics are linear, parabolic two.
Two,Pneumatic diaphragm three confluence, shunt valveStructural characteristics:
The valve body, valve cover: HT200, ZG230, ZG1Cr18Ni9Ti - 450
Valve, valve seat: 1Cr18Ni9Ti
Corrugated diaphragm: rubber reinforced polyester fabric
Filling material: Teflon, flexible graphite
Spring: 60Si2Mn
Cover: A3
The stem and push rod: 2Cr13, 1Cr18Ni9Ti
Lining: 2Cr13
Gasket: asbestos rubber sheet, asbestos gasket, 1Cr18Ni9Ti
Three,Pneumatic three-way mixing, shunt valveTechnical parameters:
The nominal diameter of DN (mm) | Twenty-five | Thirty-two | Forty | Fifty | Sixty-five | Eighty | One hundred | One hundred and twenty-five | One hundred and fifty | Two hundred | Two hundred and fifty | Three hundred |
Rated flow coefficient Kv | Confluence | Eight point five | Thirteen | Twenty-one | Thirty-four | Fifty-three | Eighty-five | One hundred and thirty-five | Two hundred and ten | Three hundred and forty | Five hundred and thirty-five | Eight hundred | One thousand two hundred and eighty |
shunt |
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| Eighty-five | One hundred and thirty-five | Two hundred and ten | Three hundred and forty | Five hundred and thirty-five | Eight hundred | One thousand two hundred and eighty |
Rated stroke L (mm) | Sixteen | Twenty-five | Forty | Sixty | One hundred |
The effective area of diaphragm Ae (cm2) | Two hundred and eighty | Four hundred | Six hundred | One thousand | One thousand and six hundred |
Nominal pressure PN (MPa) | 1.6, 4.0, 6.4 |
Inherent flow characteristics | Straight line, parabola |
The inherent adjustable ratio R | 30:1 |
The working temperature of T (c) | Common type: cast iron -20 ~ 200, -40 ~ 250, cast steel, cast stainless steel -60 ~ 250 Heat type: cast steel -40 ~ 450, -60 ~ 450 cast stainless steel |
Two medium temperature difference t (c) | Cast iron, cast steel and cast stainless steel is less than or equal to 150 is less than or equal to 200 |
The signal range of Pr (kPa) | From 20 to 100 |
The air pressure Ps (MPa) | From 0.14 to 0.4 |
Allowable leakage l/h | 10-4 * valve rated capacity |
Allowable differential pressure P (MPa) | Zero point eight six | Zero point seven five | Zero point four eight | Zero point three one | Zero point two seven | Zero point one eight | Zero point one one | Zero point one two | Zero point zero nine | Zero Point Zero Five | Zero point zero four | Zero point zero two |
Design selection and ordering matters:
1, product type and name;
2, the nominal diameter of DNmm;
3, the nominal pressure;
4, flow characteristics;
5, the body material and trim materials;
6, medium type and temperature range;
7, valve and pressure (pressure difference);
8, seal form;
9, accessories.