Pneumatic Diaphragm Double Seated Flow Control Valve (GAZJHN)
Model NO.: GAZJHN
Usage: Flow Control
Application: Petroleum, Chemical, Metallurgy, etc.
Applicable Temperature Range: -20 Deg C ~ 200 Deg C, or -40 Deg C ~ 450 Deg C
Size: DN25-DN300
Pressure: PN1.6-PN10.0MPa or Class 150lb - Class 600lb
Trademark: Goole or OEM
Transport Package: Plywood Case
Specification: ISO 9001
Origin: Wenzhou, Zhejiang, China
HS Code: 8481804090
Model NO.: GAZJHN
Usage: Flow Control
Application: Petroleum, Chemical, Metallurgy, etc.
Applicable Temperature Range: -20 Deg C ~ 200 Deg C, or -40 Deg C ~ 450 Deg C
Size: DN25-DN300
Pressure: PN1.6-PN10.0MPa or Class 150lb - Class 600lb
Trademark: Goole or OEM
Transport Package: Plywood Case
Specification: ISO 9001
Origin: Wenzhou, Zhejiang, China
HS Code: 8481804090
GAZJHN Pneumatic Diaphragm Double-Seated Flow Control Valve.This valve features a double-seated design, allowing fluid to flow through the upper and lower sealing surfaces. It is known for its low unbalanced pressure and balanced structure, making it ideal for controlling gas and liquid media such as steam in industries like petroleum, chemical, pharmaceutical, metallurgical, and power plants.
GAZJHN Pneumatic Diaphragm Double-Seated Pressure Flow Valve Structure
Valve Body.
Structure: Globe valve with double-seated design.
DN: 25~300mm.
PN: 1.6~10.0Mpa or Class 150~Class 600.
Connections: Flanged type.
Material: WCB, HT200, ZG230-450, ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti.
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Upper Cover.
Normal Temp: -20°C ~ +200°C.
Heat Radiation Type: -40°C ~ +450°C.
Gland Connection: Bolted type.
Packing: V-type PTFE, Flexible Graphite, S.S Bellows.
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Valve Assembly.
Valve Core: Double-guiding and double-seated plug type.
Cv Features: Linear, Equal Percentage or Quick Opening.
Material: 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti.
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Actuator.
Model: Multi-spring diaphragm actuator.
Diaphragm Material: NBR with reinforced polyester fabric.
Spring range: 0.02~0.1 / 0.04~0.2 MPa.
Air Supply: 0.14 / 0.16 / 0.28 MPa.
Air Supply Connector: M10*1.
Working Temp: -30~+70°C.
Valve Acting Type: Air to close or air to open.
Accessories: Positioner, hand wheel.
Parameters (with positioner):
Leakage: <0.5% × Kv.
Intrinsic Error: +/-1.5%.
Controlling Range: 30:1.
GAZJHN Pneumatic Diaphragm Double-Seated Flow Control Valve Specifications
Kv, Movement & Allowable Differential Pressure.
| DN(mm) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||||
| Seat Size (mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||
| Flow Coefficient Kv | 4 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | ||
| Movement (mm) | 16 | 25 | 40 | 60 | ||||||||||
| Allowable Differential Pressure (MPa) | 5.8 | 4.9 | 3.8 | 2.9 | 4.0 | 3.3 | 2.6 | 3.6 | 3.0 | 2.3 | ||||
| Note: This refers to the differential pressure when the valves are in the open position. | ||||||||||||||
Pneumatic Double Seated Flow Control Valve Dimension.
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| DN | Actuator | H | øA | H1 | L | |||
| Normal TEMP | Heat Radiator Type. | PN1.6 | PN4.0 | PN6.4 | ||||
| 25 | ZHA22 | 498 | 648 | 285 | 117 | 185 | 190 | 205 |
| 32 | ZHA22 | 501 | 651 | 285 | 120 | 200 | 210 | 220 |
| 40 | ZHA22 | 522 | 691 | 285 | 139 | 220 | 230 | 240 |
| 50 | ZHA22 | 530 | 699 | 285 | 144 | 250 | 255 | 265 |
| 65 | ZHA34 | 645 | 815 | 363 | 188 | 275 | 285 | 295 |
| 80 | ZHA34 | 661 | 835 | 363 | 208 | 305 | 310 | 325 |
| 100 | ZHA34 | 687 | 887 | 363 | 220 | 350 | 355 | 370 |
| 125 | ZHA34 | 1234 | 1444 | Medical Connector Medical Connector,Industrial Ethernet Connectors,Industrial Camera Connector,Industrial Automation Connectors Dongguan Shangjie Precision Hardware Co., Ltd , https://www.shangjiecnc.com | ||||