產(chǎn)品特點(diǎn)Features：
頂裝手輪，當(dāng)自動控制失效時可以手動控制。Manual override for easy operation in the event of air supply failure
采用活塞式執(zhí)行器，推力大，性能穩(wěn)定。Piston actuator provides stable and high thrust.
采用楔式石墨環(huán)加蝶形彈簧的填料組合，對填料的預(yù)緊提供動態(tài)補(bǔ)償，避免填料失效。High quality graphite packing with Belleville spring provides a continuous and stable sealing force.
自密封閥蓋設(shè)計，壓力增大密封力同時增強(qiáng)，確保閥蓋處密封無泄漏。The pressure seal bonnet design ensures that there is no external leakage as the sealing force increases with increasing system pressure.
多孔式閥籠具有減緩流速作用，并能避免介質(zhì)直接沖刷閥座密封，使汽蝕閃蒸發(fā)生在閥籠的中心，避免對密封面的直接破壞。Multi hole cage provides velocity control and reduces the effects of flashing across the valve seat.
