Made of Cast Iron, WCB, CF8 and CF8M, Pneumatic Control Butterfly Valve

Specifications

Pneumatic Symmetric Clamping Metal Seal Butterfly Valve, Made of WCB, CF8 and CF8M

Parameter

Design Featurer

Body sealing surface: It could be processed on the body directly, and the surface could be covered alloy material and higher hardness material, such as tungsten carbide.

Disc sealing surface: It has two kinds of seal structure, multi-layer seal and full metal seal. The multi-layer seal is divided into graphite seal and PTFE seal. The full metal seal includes metal to metal seal and high strength surfacing materials seal. We can make the appropriate choice according to different condition.

Standard

Valve body is designed to meet IEC60534-3-1-2001 and GBAT 12221-2005 API609

Valve mounting flange shall be per ISO 5211

Flange Standard: JB/T79.1-94,JB/T79.4-94,HG20616-97,ANSI B16.5,ANSI B16.47

The highest pressure: Class600/6.3Mpa,  Temperature range: -196 ~ 538°C

Shell Testing: The shell strength is designed to meet ASME B16.34 and GB/T9092-1999

Leak standard: ANSI B16.104

Main Feature

Medium can flow through the body directly for little resistance and high flow capacity

The body and upper cover could be made of carbon steel,austenitic stainless steel or special alloy material

The sulfur-free flexible v-graphite is heat resisting,we shall ensure the service life of packing is long-term without maintenance by increasing pre-pressure on spring gasket.

The self-sealing packing structure is tested 100,000 times (full travel) to ensure zero leakage and constant friction.When the stem moves at low friction state,we can get the long-term steady precision of control valve

The seat adopts multi-level structure, the sealing surface is composed of metal and special non-metal materials to ensure zero leakage

The shaft center deviates from the valve center bi-directionally. The asymmetric design sealing surface allows the disc to revolve in 0-90° freely