air actuated butterfly valve

Specifications

Pneumatic Butterfly Valve, Hard-seal Butterfly Valve with Pneumatic Actuator

Pneumatic Butterfly Valve

Hard-seal Pneumatic Butterfly Valve

air actuated butterfly valve

Product Description
[Overview]
Multi-level hard-seal butterfly valve series products, the Department of long-lived, energy-saving butterfly valve.Structure for its heart the principle of three-dimensional design, the use of hard and soft sealing seat multi-level compatible with the structure, processing skills, advanced technology.This product by the valve body, butterfly plates, multi-level valve seat, stem, transmission and other major components.Therefore been widely applied to metallurgy, electric power, petroleum, chemical, air, gas, combustible gas and water supply and drainage channels, such as the corrosive medium.

Three characteristics and the principle of eccentric

1, deviation from the pipe center
2, deviation from the sealing surface center
3, the conical tilt

When the valve is turned on,Butterfly plate and valve seat in contact with the closure of the moment, the use of eccentric butterfly plate 1, offset 2 rapidly from the valve seat, reducing wear and tear, deputy sealed, friction torque in small, open and flexible.Eccentric cone 3, the valve in the open or closed when the butterfly valve plate through hole, the realization of contact seals.In addition, the cone-shaped butterfly plate is greater than the radius of the rotating position of sealing contact with the rotation of the Deputy radius, the butterfly plate in the closed valve clearance will be more tightening, to achieve self-locking to prevent board had butterflies bit.

[Structural characteristics]
Butterfly valve as a result of the use of this product is the principle of three-dimensional design eccentricity, so that sealing surface of the space to achieve ideal trajectory,Between the sealing surface without friction, non-interference, coupled with proper choice of sealing materials, so that the sealing butterfly valve, corrosion resistance, wear resistance, such as high temperature and has been a reliable guarantee. Its main features are as follows:

1, open the moment the small, flexible, convenient, energy-saving effort.
2, three-dimensional structure for the heart, so that the more related butterfly plate is tightening, the sealing performance and reliable, to no leakage.
3, high pressure resistance, corrosion resistance, wear-resistant, long service life.
 

[Standard]

Design Standards: GB/T12238-1989; JB/T8527-1997
Flange connecting dimensions:
GB/T9113.1-2000;GB/T9113.2-2000
GB/T9115.1-2000;GB/T9115.2-2000
Structure length: GB/T12221-1989
Pressure test: GB/T13927-1992; JB/T9092-1999

[Executing agency]

The use of new series of GT-type pneumatic actuator, double and single-action role-type (spring-reset), gear drive, safe and reliable;The use of large diameter valves Series AW-type pneumatic actuator fork-type drive, reasonable structure, big output torque, so you have to role-type and single-action

1, gear-type dual-piston, large output torque, small size.
2, gold aluminum cylinder selected, light weight, pleasing in appearance.
3, may be at the top, at the bottom of the installation manual institutions.
4, rack adjustable opening angle connection, rated flow.
5, the actuator is energized optional instructions and various types of feedback in order to achieve automation annex.
6, IS05211 standard connector for the installation of the product provides a convenient replacement.
7, the section at both ends of transfer can screw standard products in the 0 ° and 90 ° have a ± 4 ° of adjustable range. To ensure the accuracy of synchronization with the valve.

[Technical parameters]

[The main parts of the material]
Parts Name     Materials
Body: cast iron, stainless steel, Cr-Mo steel, alloy steel
Butterfly Plate: cast steel, alloy steel, stainless steel, Cr-Mo steel
Ring: stainless steel with high temperature to form a multi-level Asbestos-Board
Stem: 2Cr13, 1Cr13 stainless steel, Cr-Mo steel
Bearing: austenitic stainless steel, 304 nitride
Filler: Flexible Graphite