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Pneumatic Butterfly Valves

Pneumatic double offset butterfly valve

Min. Order: 1 Set
Delivery time: 5 days
Production Capacity: 10000 set/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Product description: Pneumatic double offset butterfly valve has a double eccentric structure with no need to add O-rings and metal parts to assist sealing, and can be used for quick cut-off or flow adjustment. The connec
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Introduction

Pneumatic double offset butterfly valve has a double eccentric structure with no need to add O-rings and metal parts to assist sealing, and can be used for quick cut-off or flow adjustment. The connection adopts wafer type,lug type, single flange design for large pipe diameter and pipe end, which can be used for special media, such as oxygen, high vacuum, sulfur-resistant or corrosive media.

Features

1. Unique dynamic load sealing PTFE valve seat design, good elasticity and high reliability;
2. The lip type sealing structure can compensate the change of temperature and pressure;
3. Long service life, less maintenance:
4. Bidirectional seat tightness with no bubble leakage;
5. The design of fire-resistant valve seat complies with API607 standard.

Major parts material

Valve body	Ductile iron, cast steel, stainless steel, aluminum bronze
Disc	Cast steel, stainless steel and special materials
Seat	PTFE, RPTFE,
Stem	2Cr13 , 304, 316, 2205
Packing	V -shaped PTFE packing, flexible graphite packing

Specification

Nominal diameter	DN50 ~ 1000mm
Nominal pressure	PN1.0 , 1.6 MPa
Flange standard	EN1092-1, ANSI B16.5, JIS B220 ,
Connection Type	wafer, lug, semi-lug
Actuator model	Single and double acting pneumatic actuators
Supply pressure	400 ～700KPa
Air source interface	G1/4" , G1/8" , G3/8" , G1/2"
Ambient temperature	-30 ～+70 ℃
Operating temperature	-20 ℃ ～+90 ℃
Operation mode	Single-acting actuators: air-closed (B) -valve position open (FO) when degassed; air-opened (K) -valve position closed (FC) when degassed
Operation mode	Double-acting actuators: air-closed type (B) -valve position maintenance (FL) when degassed; air-opened type (K) -valve position maintenance (FL) when degassed
Accessories	positioner, solenoid valve, air filter pressure reducer, retention valve, travel switch, valve position transmitter, hand wheel mechanism, etc.