Flange Standard Type Pneumatic Single-Seat Globe Control Valve

• Customization: Available
• Temperature: Low/High/Normal Temperature
• Certification: GS, CE, ISO9001
• Model NO.: ZHITAI
• Media: Gas, Oil, Water
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Material: Stainless Steel
• Type: Sleeve
• Transport Package: Wooden Packing
• Specification: DN25~300mm
• Trademark: ZT
• Origin: China
• HS Code: 8481202000
• Production Capacity: 50000pieces/Year

Product Description

Pneumatic Diaphragm Sleeve Control Valve (ZJHM)

Summary:
ZJHM pneumatic diaphragm sleeve control valve is a kind of high performance, large capacity control valve products. It adopts sleeve guide structure, and has large guide area and good stability, which can be quickly replaced online valve internal parts. The maintenance efficiency is higher, and it can saves manpower and time. Pneumatic diaphragm sleeve control valve is widely used for its good stability and simple maintenance. Pressure flat guard spool can eliminate most of the static uneven force on the disc, and has a certain blocking effect, which can reduce the vibration caused by fluid flow. It is especially suitable for occasion about leakage requirements is not high, the valve pressure difference before and after the occasion is large.



 

Pneumatic Diaphragm Sleeve Control Valve
Model	ZJHM
Size	DN25~300mm
Structure Form	Balanced Pressure Plug Type
Body Material	Stainless Steel (304;316;316L)
Norminal Pressure	PN16; PN40; PN64MPa
Working Temperature	-17~450ºC
Application Range	Petroleum, chemical industry, electric power, metallurgy and other industries.
Feature	Large capacity, large allowable pressure difference, stable operation and simple maintenance.
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	Single Seat Casting Ball Type Type
Nominal diameter	DN25~300mm
Flange Standard	JB/T79.1-94,792-94,etc.
Body Material	Cast steel; Fluorine PTFE(F46)
Working Temperature	Standard Type: -40~230ºC; Radiating Type: 230~450ºC; Low Temperature:-60~196ºC; Bellows Seal Type: -40~350ºC
Bonnet Type	Bolted type
Packing Material	V-type PTFE Packing;PTFE+Graphite packing;Asbestos Textile Packing;  Graphite Packing.
Structure Form	Sleeve Type

   

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

 

Actuator Specification
Manner			ZHA/B Mutil-spring Diaphragm Actuator
Model			ZHA/B-11
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
Stroke(mm)	10,16	25	40	40,60		100

Advantages:
1. Adopt balanced spool, unbalanced force, large pressure difference and stable operation.
2. Large spool guiding surface can improve the oscillation caused by eddy current and impact and  reduce damage.
3. The noise is about 10dB lower than that of ordinary single or double blocks.
4. Simple structure, easy installation and maintenance.

Principle:
Pneumatic diaphragm sleeve control valve use electrical and pneumatic valve positioner, powered by electrical and compressed air, and receives the industrial automatic control input (0 to 10 mA, or 4-20 mA DC) direct current (DC) related signal, and with the aid of a series of components, automatic control valve opening, so as to achieve the fluid pressure in the pipeline, the temperature, the meteor, liquid level and other process parameters of continuous adjustment.

The flow passage of pneumatic diaphragm sleeve control valve is S streamline. The overall work is smooth, allowing large pressure difference, flow specific accurate, low noise and other characteristics. It is especially suitable for large flow, valve before and after the pressure difference is large, leakage requirements are not high in the workplace.


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.