Pneumatic Soft Seal Butterfly Valve

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Product Detail

Product Overview

The pneumatic soft seal butterfly valve is a concentric butterfly valve with excellent corrosion resistance and reliable sealing performance. It is available in two main connection types: flange type and wafer type. It is widely used in pipelines with corrosive media and working conditions that require ultra-low leakage performance.

This valve adopts soft sealing materials such as rubber and PTFE to achieve zero leakage. Due to the characteristics of soft seal materials, it is not suitable for high temperature, high pressure and severe wear working environments. It is most suitable for normal temperature, low pressure and medium pressure pipeline systems.

Technical Parameters

Parameter Item	Specification
Product Name	Pneumatic Flange Soft Seal Butterfly Valve
Model	D641X
Valve Body Material	Ductile Iron, Carbon Steel, Stainless Steel
Connection Type	Flange Connection
Applicable Pressure	PN10
Nominal Diameter	DN50～DN1200
Drive Mode	Pneumatic
Applicable Media	Water, oil and other conventional media
Applicable Temperature	≤90℃
Flow Characteristic	Approximate quick-opening type
Disc Type	Vertical plate type
Leakage Standard	GB/T4213-92
Flange Standard	JB/T79, GB/T9113, HG20594-97
Actuator Type	AT / AW / PT Pneumatic Actuator
Action Mode	Double-acting (Air-open & Air-close), Single-acting (Spring return)
Control Mode	On-off type, Intelligent control type
Air Supply Pressure	Double-acting: 3-8bar; Single-acting: 4-8bar
Operating Medium	Air
Connection Dimension	ISO5211
Air Port Standard	Complies with NAMUR standard
Manufacturing Standard	GB, JB, HG, ANSI, API, JIS, DIN and customized standards