Mobile:+86-17717520739
Wechat:17717520739
Email:info@shxvalve.com
Address: NO.720, Suide Road, Jiading District,Shanghai, China.
Model:
Pneumatic mixing three way control valve Body type: | three way casting globe type |
Spool type: | three way double seat spool |
Nominal size: | DN20~300 NPS 3/4〞~ 12〞 |
Nominal pressure: | PN16 ~ 100、 CLASS 150LB ~ 600LB |
Connection: flange: | FF、RF、MF、RTJ |
Welding: | SW、BW |
Flange dimension: | According to to IEC 60534 |
Pneumatic mixing three way control valve Bonnet type: |
Ⅰ:standard type(-20℃~230℃) Ⅱ:Radiator type: (-45℃~ high than 230℃ occasion) Ⅲ:Low temperature extended type(-196℃~ -45℃) Ⅳ:Bellow seal type Ⅴ:Warm insulation Jacket type |
Packing: | V type PFTE packing, flex. graphite packing, etc. |
Gasket: | Metal graphite packing |
Control valve Actuator: | Pneumatic:multi-spring diaphragm actuator, piston type actuator. |
Component name | Control Valve Material |
Body/Bonnet | WCB/WCC/WC6/CF8/CF8M/CF3M |
Valve spool/Seat | 304/316/316L(overlaying stellite alloy) |
Packing | Normal:-196~150℃ is PTFE,RTFE,>230℃ is flexible graphite |
Bellow | 304,316,316L |
Gasket | Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket |
Stem | 2Cr13/17-4PH/304/316/316L |
Diaphragm Cover | Normal:Q235,Special:304 |
Diaphragm | NBR with reinforced polyester fabric |
Spring | Normal:60Si2Mn,Special:50CrVa |
Pneumatic three way control valve Flow characteristic | Linear, percentage | |
Allowable range | 30: 1 | |
Rated Cv value | Percentage / linear CV8.5~1280 | |
Pneumatic three way control valve Allowable leakage |
Metal seal: IV grade(0.01% rated capacity) Leakage standard: GB/T 4213 |
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Pneumatic three way control valve Performance | ||
Intrinsic error(%) | ±1.5 | |
Return difference(%) | ≤1.5 | |
Dead zone(%) | ≤0.6 | |
Difference from beginning to end point(%) | ±2.5 | |
Rated travel difference(%) | ≤2.5 |
Special test | Material penetration flaw detection (PT), radiator test (RT), flow characteristic test, low temperature test. |
Special treatment | Trim nitrogen treatment, seat hard alloy treatment. |
Special rinse | Degreasing and dehydration treatment |
Special condition | Special piping or connection, vacuum condition, S.S fastener, special coating. |
Special dimension | Customized face to face length or dimension |
Test and inspection | Third party test report |
Pneumatic mixing three way control valve Type\ Method |
Pneumatic diaphragm actuator |
ZH23~ZH56 | |
Multi-spring type | |
Usage | Regulating type, ON-OFF type |
Air supply pressure or Power supply voltage | Air supply pressure (Spring range) 140(20~100)Kpa G 240 (40~200) Kpa G 280 (80~240) Kpa G |
Connector | Air pipe connector: RC1/4 |
Direct action | Pressure increase, stem descend, valve close. |
Reaction | Pressure increase, stem ascend, valve open. |
Input signal | 40~20mA.DC(with positioner) |
Lag | ≤1%FS(with positioner) |
Linear type | 2%FS(with positioner) |
Environmental temperature | -10℃~+70℃ |
Pneumatic mixing three way control valve Accessories |
E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes. |
Seat diameter(mm) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||
Rated flow coefficient, CV | 8.5 | 13 | 21 | 34 | 53 | 85 | 135 | 210 | 340 | 535 | 800 | 1280 | ||
Nominal size | Travel | Option flow coefficient Cv(★standard ●recommended) | ||||||||||||
DN25 | 16 mm | ★ | ||||||||||||
DN32 | 25 mm | ★ | ||||||||||||
DN40 | ● | ★ | ||||||||||||
DN50 | ● | ● | ★ | |||||||||||
DN65 | 40mm | ★ | ||||||||||||
DN80 | ● | ★ | ||||||||||||
DN100 | ● | ● | ★ | |||||||||||
DN125 | 60mm | ★ | ||||||||||||
DN150 | ● | ★ | ||||||||||||
DN200 | ● | ● | ★ | |||||||||||
DN250 | 100mm | ● | ● | ★ | ||||||||||
DN300 | ● | ● | ★ | |||||||||||
Pneumatic actuator Diaphragm area, Ae (cm2) |
ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | ||||||||||
350 | 560 | 900 | 1600 | |||||||||||
Action | Spring range | Pneumatic mixing three way control valve Metal sealing allowable pressure difference(MPa) |
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Air open | 20-100KPa | 0.7 | 0.44 | 0.28 | 0.18 | 0.17 | 0.11 | 0.07 | 0.07 | 0.05 | 0.03 | 0.05 | 0.03 | |
40-200 KPa | 2.14 | 1.31 | 0.84 | 0.53 | 0.51 | 0.33 | 0.21 | 0.22 | 0.15 | 0.09 | 0.11 | 0.07 | ||
80-240 KPa | 4.99 | 3.05 | 1.95 | 1.25 | 1.18 | 0.78 | 0.5 | 0.51 | 0.36 | 0.21 | 0.21 | 0.15 | ||
Air close | 20-100KPa | 2.14 | 0.87 | 0.56 | 0.35 | 0.34 | 0.22 | 0.14 | 0.15 | 0.1 | 0.06 | 0.05 | 0.03 | |
40-200 KPa | 6.4 | 5.86 | 3.64 | 2.3 | 2.21 | 1.43 | 0.91 | 0.95 | 0.66 | 0.37 | 0.11 | 0.07 | ||
80-240 KPa | 6.4 | 6.4 | 5.04 | 3.18 | 3.06 | 1.98 | 1.26 | 1.32 | 0.92 | 0.52 | 0.21 | 0.15 |