Basic Info.
Product Description
Product Introduction
ZJHPF pneumatic diaphragm PTFE control valve is a kind of anti-corrosion straight-through single-seat control valve. The inside wall of body and trim which contact with fluid adopts high-pressure injection molding process to lined with corrosion and aging resistance polyperfluoroethylene propylene(F46) and sealed with PTFE bellows.
The pneumatic diaphragm control valve is widely used in the acid, alkali, poisonous and volatile gases and liquids.
Technical Parameters
| Body type | Straight type casting body |
| Nominal diameter | 3/4", 20, 25, 32, 40, 50, 65, 80, 100, 150mm |
| Nominal pressure | PN 1.6 MPa |
| Flange standard | JB/T79·1~79·2-94 |
| Material | ZG230-450 lined with F46 |
| Working temperature | -40~180ºC |
| Gland type | Bolted compression type |
| Packing | V type PTFE |
| Spool typ | Single-seat plunger spool |
| Flow characteristics | Linear or equal percentage |
| Seat and spool material | 2Cr13 lined with F46 |
Feature
1. Corrosion resistance. Almost able to withstand the corrosion of all media (including concentrated nitric acid and aqua regia).
2. Good sealing performance. Double sealing with bellows and packing to ensure no leakage.
3. The leakage is small. Because the valve core and valve seat adopt soft sealing, it is ensured that there is no leakage.
4. Equipped with HA actuator, with large output force and compact structure.
Actuator
Actuator type: ZHA (B) multi-spring diaphragm actuator
Diaphragm material: Bing rubber clamped nylon cloth, Dingqing rubber clamped nylon cloth
Spring range: 20~100, 80~240kPa
Air supply pressure: 140~400kPa
Air source interface: Rc1/4"
Ambient temperature: -30~+70ºC
Pneumatic fluorine-lined control valve valve action type: use positive or reverse acting actuators to realize the air-closing or air-opening of the valve
Accessories: positioner, air filter pressure reducer, position valve, travel switch, valve position transmitter, solenoid valve, handwheel mechanism, etc.
| Model | ZHA-22 ZHB-22 | ZHA-23 ZHB-23 | ZHB-34 ZHB-34 | ZHA-45 ZHB-45 |
| Effective area (cm2) | 350 | 350 | 560 | 900 |
| Stroke (mm) | 16 | 25 | 40 | 60 |
| Spring range (KPa) | 20~100, 40~200; 80~240, 20~60, 60~100 | |||
Leakage: less than 0.01% of the rated capacity of the valve
Backlash: with positioner: less than 1% of full stroke
Basic error: with positioner: less than ±1% of full stroke
Note: Use standard V-type PTFE packing
Adjustable range 30:1
Connection dimensions and standards
Flange standard: Cast iron is GB4216-86 Cast steel is GB9113-88, JB/T79-94
Flange seal standard: PN10, PN16 is RF, PN40,PN64 is FM, the body is M
Structural length standard: GB12221-89
Connection of actuator air signal: Internal thread M10×1
The flange and distance of flange end face can be manufactured according to the standard specified by the user. Such as ANSI, JIS, DIN standard.
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Company development
FAQ:
1. Are you trading company or factory?
We are factory in Yongjia, Wenzhou, China.
2. Are the prodcuts certified?
Yes, ISO, FDA, SIL 2, CE, LFGB and so on.
3. Delivery time?
7-15 working days usually, but it will be longer when peak season.
4. MOQ?
One set.