Wzjhp Pneumatic Film Bellows Regulating Valve/Pneumatic Bellows Regulating Valve

• Temperature: Ordinary Temperature
• Certification: GS
• Media: Gas, Oil, Water, Acid
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Model NO.: WZJHP
• Material: Stainless Steel
• Type: Bellows
• Use: Adjust
• Pressure: Normal Pressure
• Port of Ningbo: Class IV (Standard, Metal Seat)
• Body Type: Straight Through, Angle, Z Shape
• Transport Package: Wooden Box
• Specification: DN15-DN500
• Trademark: xc
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000

Product Description

Overview of pneumatic bellows regulating valve
Pneumatic bellows seal regulating valve is composed of multi-spring pneumatic film actuator and bellows seal regulating valve body, the valve cover uses bellows filler double seal, fundamentally eliminate the possibility of media leakage, suitable for extremely quality, flammable, explosive and volatile, and toxic or precious media flow pressure control, can also be used in vacuum situations.


Pneumatic bellows regulating valve characteristics
Pneumatic bellows seal regulating valve is added a layer of protective film outside the sealing element, to prevent direct contact with corrosive medium sealing element, and when the medium pressure increases, bellows will expand, reduce the impact of the medium on the sealing surface, in highly corrosive medium conditions, can also be used double bellows structure seal.
Pneumatic bellows regulating valve parameters

Valve body
Form	Straight-through casting valve
Nominal diameter	20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200mm
Nominal pressure	PN16, 40, 64bar
Flange standard	JB/T79.1-94, 792-94, etc
Materials	Cast steel (ZG230450), cast stainless steel (ZGICr18Ni9Ti, ZGICr18Ni12M02Ti), etc
Upper valve cover	Standard: - 17-230 ºC heat type: 230-450 ºC low temperature type: 60-196 ºC bellows seal type: - 40-350 ºC
Valve cover form	Bolt press type
Packing	V-shaped PTFE packing, asbestos packing containing impregnated polytetrafluoroethylene packing, asbestos textile packing, graphite packing
Structural form	Bellows seal

 

Valve inner assembly
Spool type	Single seat plunger type, cage type, sleeve balanced spool
Flow characteristics	Equal percentage characteristics and linear characteristics
Materials	Stainless steel, stainless steel castello alloy, titanium and corrosion resistant table gold, etc.

Pneumatic bellows regulating valve actuator

Executive mechanism
Type	ZHA/B multi-spring film actuator
Model number	ZHA/B-22	ZHA/B-23	ZHA/B-34	ZHA/B-45	ZHA/B-56
Effective area cm2	350	350	560	900	1400
Stroke mm	10. 16	25	40	40, 60	100
Spring range KPa	20-100 (standard), 20-60, 60-100, 40-200, 80-240
Diaphragm material	Butadiene rubber clip nylon cloth, ethylene propylene rubber clip nylon cloth
Air supply pressure	140-400KPa
Air source interface	RCl/4"
Ambient temperature	- 30-70 ºC

 

Valve action form

Air-close type (B) - Valve position open when air is lost (FO); Air open (K) - valve position closed when air is lost (FC)

Accessories

Positioner, air filter pressure reducer, position keeping valve, travel switch, valve position transfer, hand wheel mechanism, etc