高清性色生活片免费播放网,亚洲综合色区另类AⅤ,无码精品人妻一区二区三区AV,99视频国产精品免费观看

Current Location:HomeProductsWater system control valvePressure sustaining/relief valve Pressure sustaining/relief valve

Pressure sustaining/relief valve

The pressure sustaining/relief valve

is a hydraulically operated, pilot-controlled, modulating valve designed to maintain constant upstream pressure within close limits. This valve can be used for pressure relief, pressure sustaining, back pressure, or unloading functions in a by-pass system.

In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges. Operation is completely automatic and pressure settings may be easily changed by adjusting screw on top of the pilot.


View Detail
国产精品成人无码久久久| 久久精品国产日本波多野结衣| 无码专区久久综合久中文字幕| 日出水了特别黄的视频| 强奷漂亮的女教师中文字幕| 公交车大龟廷进我身体里图|