Pneumatic Vacuum Butterfly Valve

Keywords: metering pump accessories

Classification:

Pneumatic butterfly valve

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DESCRIPTION

Commodity name: Pneumatic Vacuum Butterfly Valve

Features of pneumatic high vacuum butterfly valve:

1. The bearings adopt self-lubricating bearings with small friction resistance.

2. The butterfly plate sealing ring can be replaced without disassembling the valve from the pipeline.

3. The valve can cut off the medium in both directions, achieving reliable sealing and zero leakage in both directions.

4. The shaft seal adopts a special structure with automatic compensation to isolate the connection between the outside atmosphere and the pipeline, thereby ensuring the vacuum of the pipeline.

Pneumatic vacuum butterfly valve structure diagram

Product parameters

Technical parameters of pneumatic high vacuum butterfly valve:

Scope of application (Pa)	2x105～1.3x10-5
Air leakage rate (Pa.L/S)	≤1.3x10-6
Drive form	Compressed air (4-7bar)
Medium temperature(℃)	Nitrile rubber -25 ~ +80, fluorine rubber -30 ~ +150
Flange standard	GB6070.3-85
Installation location	arbitrary
Action form	Single-acting type: air-closed type (B)--the valve position is open (FO) when the air is lost; air-opening type (K)--the valve position is closed (FC) when the air is lost. Double-acting type: 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)
control method	Switch type (switch two-position control)
control method	Adjustable type (4-20mA signal adjusts flow size)

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