9.Counter bored and hot-melt sealed bonnet bolts encircled by the bonnet gasket ensures no risk of corrosion. 8. Round bonnet gasket fixed in a recess groove in the bonnet preventing it from being blown out by pressure surges. 7. Triple stem seal system with an NBR wiper ring protecting against impurities from outside, a polyamide radial bearing with four NBR O-rings and innermost an EPDM rubber lip seal as the main hydraulic seal to the flow. 6. Full circle brass thrust collar provides fixation of the stem and low free running torque. 5. Stainless steel stem with wedge stop and rolled threads for high strength. The wedge has a large through bore with room for the stem, completely free of hollows or cavities where stagnant water or impurities could collect and cause contamination. Guides in the wedge and on the valve body ensure a uniform closure, safe operation and prevent overloading of the stem. The stainless steel wedge core is fully vulcanized with drinking water approved EPDM rubber, no iron parts are exposed to the medium and the excellent rubber vulcanization prevents creeping corrosion underneath the rubber. Fixed, integral wedge nut prevents vibration and ensures durability. The triple stem seal system, the high strength stem and the thorough corrosion protection safeguard the unmatched reliability. It features an outstanding durability due to the ability of the rubber to regain its original shape, the double bonding vulcanization process and the sturdy wedge design. The wedge is fully vulcanized with FEIDAVALVE’s own drinking water approved EPDM rubber compound. Stainless steel resilient Gate Valve DN150 FEIDAVALVE stainless steel resilient gate valves are designed with built-in safety in every detail.
Stainless steel resilient Gate Valve DN150
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