The sealing surface of butterfly valve produced by zhejiang zhengfeng valve adopts the sealing design of three-eccentric and flexible multi-layer metal and graphite.It ensures good sealing performance and reduces operating torque. The elastic characteristics of multi-layer composite metal sealing ring enable the valve to have zero leakage performance.
* Size : DN350
* Pressure : PN25
* Connection :LUG type ends
* Operation : Gearbox operated
* Body :A216 WCB
* Disc :A351 CF8M
* Seal :SS316+Graphite
* Stem :AISI 316
* F/F length : 92mm
* Valve Structure : Triple offset
* Painting : Epoxy paint
* Color card No : RAL 5005
* Design standard: EN593
* End flange dimension: EN1092-1
* Suitable medium : water、oil、gas
* Origin : CHINA
* EN 10204-3.1 certificate : Yes
Multilayer hard seal butterfly valve seal is composed of hard and soft metal sheets. It is formed by high precision machining and is mounted on the disc plate to match the valve seat. It has double advantages of metal seal and elastic seal. It has excellent sealing characteristics both at low temperature and high temperature.
The valve seat with three-dimensional eccentric structure has almost no friction with the disc plate, and has the sealing function of tighter and tighter closure.
Unique structure, flexible operation, labor-saving, convenient, not affected by high or low pressure of medium, reliable sealing performance, long service life.
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