搜尋結果
2018年6月8日 · 閘閥（Gate valve） 利用閥桿帶動閘板做直線運動，以閘板升降開啟或關閉流道。 閘板半開使用時，流體衝擊閘板易造成閥座震動而損傷，故 不適合節流使用，僅適用全開或全關場合 。 止回閥（Check valve） 又稱 逆止閥 、 單向閥 ， 顧名思義僅允許流體單向流通 ，一方向流體壓力作用下，即閥瓣開啟使流道暢通；反之，當另一方向流體壓力作用時，閥瓣即關閉達到防止倒流之效果。 蝶閥（Butterfly valve） 又稱 蝶型閥 ，控制閥板旋轉角度即可調整啟閉及流量。 蝶閥可分為彈性密封及金屬直接密封，彈性密封是利用膠圈防漏 (可參考 蝶閥閥座材質 )，低壓密封性好，但膠圈 有溫度 及壓力上的限制；金屬直接密封是以金屬面直接接觸，工作溫度範圍較廣。
A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened.
Fig. 33X & 33XLS - Bronze Gate Valve Datasheet. PN16 Gate Valves - Bronze - Compression End. Robust and high quality bronze body with integral seating surfaces. Offers the ultimate in dependable service wherever minimum pressure drop is important. WRAS Approved for use with potable water.
A gate valve is designed to fully open and close once installed into pipelines as isolating valves. Operation of a gate valve is performed doing an either clockwise to close or clockwise to open rotating motion of the stems. When operated, the gate moves up or downward on threaded part of the stem.
1 天前 · Gate valves (also known as knife valves or slide valves) are linear motion valves in which a flat closure element slides into the flow stream to provide shut-off. They are one of the most common valves used.
閘閥（gate valve）是一個啟閉件閘板，閘板的運動方向與流體方向相垂直，閘閥只能作全開和全關，不能作調節和節流。 閘閥通過閥座和閘板接觸進行密封，通常密封面會堆焊金屬材料以增加耐磨性，如堆焊1Cr13、STL6、不鏽鋼等。
This specification covers the requirements for gate valves, butterfly valves and reflux valves intended for installation in waterworks installations including pumping stations, water treatment works and service reservoirs or as specified otherwise.
A Gate valve is a linear-motion manual valve that has a vertical rectangular or circular disc that slides across an opening to stop the flow that acts as a “gate”.
A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from open to closed position, the slow operation also prevents water hammer effects. Gate valves can be used for a vast number of fluids.
A gate valve is a type of valve that employs a gate or wedge-shaped disc to control the flow of fluid. When the valve is fully open, the gate is completely removed from the flow path, allowing unobstructed passage for fluid.
