Pneumatic Single-Seat Globe Control Valve

• Customization: Available
• Temperature: Low Temperature
• Certification: GS, CE, ISO9001
• Media: Gas, Water
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Material: Stainless Steel
• Type: Single Seater
• Transport Package: Wooden Packing
• Specification: DN20~250mm
• Trademark: ZT
• Origin: China
• HS Code: 8481202000
• Production Capacity: 50000pieces/Year

Product Description

Pneumatic Low Temperature Diaphragm Control Valve(ZMAP)

Summary:
Pneumatic low temperature diaphragm control valve is suitable for the medium temperature and 40 ° C to 196 ° C (such as liquid oxygen, liquid nitrogen, etc.), low temperature and cryogenic occasion. It is mainly composed of mutil-springs pneumatic diaphragm actuator with a long neck to take over the body. It adopts the long neck type upper bonnet function, which  causes the packing to work under the normal temperature, and reduces the external heat energy to pass in. In order to reduce transmission, the long neck adopts thin-walled structure, which has good low-temperature resistance. It is especially suitable for accurately controlling the process parameters of low-temperature gases and fluids (such as liquid oxygen and liquid xue) at a given value.

Pneumatic Low Temperature Diaphragm Control Valve
Model	ZMAP
Size	DN20~250mm
Structure Form	Single Seat Type; Sleeve Type
Body Material	Cast steel(WCB);Stainless Steel (304;316;316L)
Norminal Pressure	PN16; PN40; PN64MPa
Working Temperature	-17~-196ºC
Application Range	Cryogenic gases, fluids.
Feature	Long neck cover for insulation with good low temperature resistance.
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
Nominal diameter	DN20~250mm
Flange Standard	JB/T79.1-94,792-94,etc.
Body Material	Cast steel; Stainless Steel
Working Temperature	Low Temperature:-60-196°C; Ultra-low temperature :-250°C
Bonnet Type	Bolted type
Packing Material	V-type PTFE Packing; Flexible Graphite Packing
Structure Form	Extension Bar

 

Components Valve Trim
Plug Type	Single Seat type; Sleeve Type;
Flow Characteristic	Equal Percentage Flow Characteristic;  Linear Characteristics
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:
As for pneumatic low temperature control valve, because the use of the site belongs to a relatively stringent working condition, the parts of the processing of strict control. Special low temperature treatment ensures that the valve s not brittle in low temperature condition, and can withstand low temperature medium impact. It is widely used in metallurgy, air separation, oxygen production, petroleum, chemical and other low temperature, cryogenic occasions.

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.