Pneumatic Regulating Butterfly Valve

Keywords: metering pump accessories

Classification:

Pneumatic butterfly valve

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DESCRIPTION

Commodity name: Pneumatic Regulating Butterfly Valve

Principle of pneumatic regulating butterfly valve:

Pneumatic butterfly valve actuators are divided into single-acting and double-acting principles, which are common pneumatic switching butterfly valves and pneumatic regulating butterfly valves. The single-acting type has an air-closing spring return type and an air-opening spring automatic return type. The single-acting type is suitable for places that require normally open or normally closed. Double-acting is an air-opening and air-closing type. Both opening and closing require air source pressure, and the regulating pneumatic butterfly valve should adopt a double-acting mode.

Picture of pneumatic regulating butterfly valve
Pneumatic flange regulating butterfly valve Pneumatic wafer regulating butterfly valve

Product parameters

Technical parameters of pneumatically adjusted butterfly valve:

Nominal diameter	DN50～DN1200(mm)
Pressure Level	PN1.0、1.6、2.5、6.4MPa
Connection method	Flange, clip-on connection
Sealed form	Soft seal or metal hard seal
Drive mode	Air source driven, compressed air 4~7bar (can be equipped with handwheel)
Action range	0～90°
Valve body material	Carbon steel, stainless steel 304, stainless steel 316
workplace	Water, steam, oil, acid corrosiveness, etc. (high temperature occasions)
temperature range	Soft seal: -29℃～180℃ Hard seal: -40℃～550℃
control method	Equipped with valve positioner, intelligent adjustment type (4~20mA analog signal)

Standard specifications for pneumatically regulated butterfly valves:

Design standards: GB/T2238-1989

Structure length: GB/T12221-1989

Pressure test: GB/T13927-2000; JB/T9092-1999

Flange connection dimensions: GB/T9113.1-2000; GB/T9115.1-2000;

Adjustable range R: 50:1

Number of uses: 1 million times

Hysteresis: with positioner: less than 2% of the full stroke

Basic error: with positioner: less than ±2% of full stroke

Leakage amount l/h: complies with ANSI B16.104 Level IV standard

Pneumatic regulating butterfly valve (flange type) Pneumatic regulating butterfly valve (wafer type)

Pneumatically adjusted butterfly valve actuator parameters:

executive agency	GT, AT, AW series single and double acting pneumatic actuators
Air supply pressure	0.5～0.7MPa
Air supply interface	G1/4"、G1/8"、G3/8"、G1/2"
ambient temperature	-30～+70℃
Action form	Double-acting actuator: air-closing type (B)--the valve position is maintained when the air is lost (FL); air-opening type (K)--the valve position is maintained when the air is lost (FL)
Optional accessories	Positioner, solenoid valve, air filter pressure reducer, position retaining valve, travel switch, valve position transmitter, handwheel mechanism, etc.

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