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Pneumatic Butterfly Valves

Control type butterfly valve with pneumatic actuator

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: Control type butterfly valves with pneumatic actuators can be used for cut-off and control with have excellent control characteristics. Even when used for control, it still seals tightly.
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Introduction

Control type butterfly valves with pneumatic actuators can be used for cut-off and control with have excellent control characteristics. Even when used for control, it still seals tightly.

Features

1. The lip type sealing structure can compensate the change of temperature and pressure on the valve;
2. There is almost no friction when sealing, ensuring smaller torque and better sealing;
3. There is no contact between the valve seat and the butterfly plate when it is opened and in the middle position;
4. There is no wear point on the upper and lower parts of the valve seat;
5. The flow characteristic curve changes proportionally, and the adjustment range is wide.

Major parts material

Valve body	Ductile iron, cast steel, stainless steel, duplex stainless steel, 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.