Pneumatic Diaphragm Angle Type Control Valve

• Certification: GS, CE, ISO9001
• Standard: Standard
• Connection Mode: Flange
• Power: Pneumatic
• Norminal Pressure: Pn16; Pn40; Pn64MPa
• Manner: Zha/B Mutil-Spring Diaphragm Actuator
• Model NO.: ZMAS; ZMBS
• Transport Package: Wooden Packing
• Specification: DN25~200mm
• Trademark: ZT
• Origin: China
• HS Code: 8481202000

Product Description

Pneumatic Diaphragm Angle Type Control Valve

Summary:
ZMA (B) S pneumatic diaphragm angle type control valve is suitable for the requirements of right-angle connection, medium for high viscosity, suspension and granular media occasions. It is mainly composed of pneumatic film multi-spring actuator and angle valve. The valve plug adopts the top guide structure, which has the characteristics of small volume, light weight, simple flow path, small resistance and easy washing. Pneumatic diaphragm angle type control valve is widely used in the accurate control of gas, liquid and other media, that is, process parameters such as pressure, flow, temperature, liquid level at a given value.

Pneumatic Diaphragm Angle Type Control Valve
Model	ZMAS; ZMBS
Size	DN25~200mm
Structure Form	Single Seat Angle Casting Type
Body Material	Cast steel(WCB);Stainless Steel (304;316;316L)
Norminal Pressure	PN16; PN40; PN64MPa
Working Temperature	-196~-450ºC
Application Range	High viscosity, suspended and particulate media.
Feature	Be able to avoid coking, blocking and self-cleaning.
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 Angle Casting Type
Nominal diameter	DN20~200mm
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	Angle Casting Type

Components Valve Trim
Plug Type	Single Seat Plunger 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:
Pneumatic diaphragm angle type control valve is especially suitable for allowing small leakage, small pressure difference between the valve before and after the high viscosity, suspension and granular material adjustment, which can avoid coking, blocking, facilitate self-cleaning and cleaning. This product has the normal temperature type, the adjustment cuts off the type, the bellows seal type, the high temperature type, the jacket heat preservation type and so on. It applies fluid temperature in - 196 ° ~ + 450ºC. The flow characteristics are linear or equal percentage. Various specifications are available.

Principle:
Pneumatic diaphragm angle type control valve is mainly composed of pneumatic film multi-spring actuator and angle valve. It takes compressed air as the power source. With the help of electrical valve positioner, converter, solenoid valve, positioner valve and other accessories, it accepts the relevant signal of the adjustment position, automatic control valve opening, so as to achieve the medium flow, pressure and liquid level regulation. The constant percentage characteristic is the optimal one, because it is stable and has excellent adjustment performance.


In general, angle type control valve is installed in a forward direction, that is, the bottom enters &the side report. Only in high-pressure differential situations and high viscosity, easy to coking, medium containing suspended objects, it is recommended for reverse installation, that is, the material side enters the bottom out. Angular regulator reverse use of the purpose is to improve the unbalanced force and reduce wear to the valve core, at the same time, it is also conducive to high viscosity, easy to coking and containing suspended medium flow, coking and blocking.

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.