Pneumatic Diaphragm Cage Type Control Valve

• Temperature: Low/High/Normal Temperature
• Certification: GS, CE, ISO9001
• Media: Oil, Liquid, Gas, Steam and Other Media
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Model NO.: ZJHL
• Material: Carbon Steel; Stainess Steel
• Type: Cage Type
• Norminal Pressure: Pn16; Pn40; Pn64MPa
• Manner: Zha/B Mutil-Spring Diaphragm Actuator
• Transport Package: Wooden Packing
• Specification: DN25~300mm
• Trademark: ZT
• Origin: China
• HS Code: 8481202000

Product Description

Pneumatic Diaphragm Cage Type Control Valve

Summary:
ZJHL pneumatic Diaphragm cage type control valve is mainly designed to reduce the noise of compressible fluid. In order to adapt to gas throttle diffusion and expansion, the sleeve is provided with many symmetrical holes to reduce the pressure difference. The fluid passage is "S" streamlined. Valve piug adopts pressure balanced structure. The flow characteristics of the valve are determined by the cage window curve. In addition, the sleeve is also provided with a guide fin to improve the smooth flow of fluid around the sleeve, so that the pressure loss is small, the flow is large, and the noise is small.





 

Pneumatic Diaphragm Cage Type Control Valve
Model	ZJHL
Size	DN25~300mm
Structure Form	Straight-through Casting Type
Body Material	Cast steel(WCB);Stainless Steel (304;316;316L)
Norminal Pressure	PN16; PN40; PN64MPa
Working Temperature	-17~+50ºC
Application Range	Oil, liquid, gas, steam and other media.
Feature	Low voltage loss, high flow, low noise.
Action	Air closing(B)-Air failure, valve to open(FO); Air opening(K)-Air failure, valve to close(FC)
Accessory	Posilioner/Air Filtralion /Pressure Reducing Valve /Transmilter/Handwheel

 

Body Specification
Manner	Straight-through Casting Ball Type Valve
Nominal diameter	DN20~300mm
Flange Standard	JB/T79.1-94,792-94,etc.
Body Material	Cast steel; Fluorine PTFE(F46)
Working Temperature	Standard Type: -17-230°C ;Radiating Type:230-450°C;Low Temperature:-60-196°C; Bellows Seal Type:-40-350°C
Bonnet Type	Bolted type
Packing Material	V-type PTFE Packing;PTFE+Graphite packing;Asbestos Textile Packing;  Graphite Packing.
Structure Form	Cage Type

 

Components Valve Trim
Plug Type	Balanced Pressure Type
Flow Characteristic	Equal Percentage Flow Characteristic; Linear Characteristics
Plug Material	Stainless Steel; Surfacing Stellite Alloy; Titanium, etc.

 

Actuator Specification
Manner			ZHA/B Mutil-spring Diaphragm Actuator
Diaphragm material			EPDM+N; NBR+N
Range of Spring(MPa)			20-100(Standard);20-60; 60-100; 40-200; 80-240
Supply Pressure(MPa)			140-400
Air connection			RC-1/4"
Environment Temperature			-30-70ºC
Model	ZHA/B-22	ZHA/B-23	ZHA/B-34	ZHA/B-45	ZHA/B-56
Active Area (cm²)	350	350	560	900	1400

Advantages:
The sealing surface of pneumatic cage type control valve is composed of a metal sealing surface between the valve plug and the seat and a non-metallic elastic sealing structure between the cover and the cage. Graphite gasket is used in nonmetallic structure, and its elasticity and high temperature resistance are greatly improved! Apart from Good dynamic stability, low noise, air defense, it is suitable for controlling all kinds of temperature of high pressure differential fluid.

Company Introduction:   
Zhitai Valve Co., Ltd is a member of Valve Association of Longwan District, is located in Longwan Central Industrial Zone, Wenzhou City. It'a professional technology company integrated with development, manufacturing, sales, and after-sales services of valve actuators and and self-controlled valves. Presently, our main products include: pneumatic actuators, pneumatic valves and pneumatic control valves; electric actuators, electeic valves and eletric control valves; automatic control products. Our products are widely applied in natural gas, electricity, petroleum, chemical, metallurgical, construction, pharmacy, paper, printing and dying. Zhitai series actuators and valves are the best choice for automatic fluid control engineering and equipment manufacturing. We sincerely welcome customers from home and abrode to visit us for supervision, communication and cooperation. It's a great honor for us to cooperate with you.