Features:
1. Compact structure, attractive appearance, precision casing, surface
shine.
2. Separated seat and body, suitable to machining the seat and the seat
surface grinded as mirror plate to assurance sealing.
3. Disc Holder and Adjusting valve are suitable for the function to opening
the valve quickly and back seat in time, so the valve can attain perfect
differential pressure of open and close.
4. Stellited Seat and Disc, antifriction, anti-erosion, increase of service
life.
5 Back pressure balanced, adopted with military bellows, can handle application
involving high built-up back pressure, the bellows also can isolate the
internal parts in the bonnet chamber from corrosion liquid or poisonous
gas.
6 As the key part, springs are isothermal heat treated twice to assuring
rigidity and right function.
7 Pressure tests are applied to body,seat and other bearing pressure parts.
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