Ing sangkan ning pamangamit check valve yapin ing para aiwasan ing reverse flow ning medium, at ing check valve keraklan maka-install ya keng outlet ning pump. Dagdag pa, dapat ya namang i-install ing check valve keng outlet ning compressor. king makuyad a salita, para aiwasan ing reverse flow ning medium, dapat yang i-install ing check valve keng gamit, device o pipeline.
Keraklan, deng vertical lift check valves magagamit la kareng horizontal a pipeline a maki nominal a diametru a 50mm. Ing straight-through lift check valve malyari yang i-install kareng horizontal ampo vertical a pipeline. Ing bottom valve keraklan maka-install ya keng vertical pipeline ning pump inlet, at ing medium mamagus ya manibat lalam papunta babo.
Ing swing check valve malyari yang gawang matas a pressure, ing PN malyari yang miras 42MPa, at ing DN malyari ya namang gawang maragul, ing maximum malyari yang miras maigit 2000mm. Agpang kareng miyayaliwang materyales ning shell ampo seal, malyari yang gamitan keng nanu mang working medium ampo nanu mang working temperature range. Ing medium yapin ing danum, steam, gas, corrosive medium, oil, pamangan, panulu, atbp. Ing temperatura ning medium atyu ya pilatan ning -196~800°C.
Ing posisyun ning pamag-install ning swing check valve ali ya limitadu, keraklan maka-install ya keng horizontal pipeline, pero malyari ya namang i-install keng vertical pipeline o keng inclined pipeline.
Ing applicable a okasyun ning butterfly check valve yapin ing mababang pressure ampo maragul a diametru, ampo ing okasyun ning pamag-install limitadu ya. Uling ing working pressure ning butterfly check valve e ya malyaring maging matas, pero ing nominal diameter malyari yang maging maragul, na malyaring miras maigit 2000mm, pero ing nominal pressure mas mababa ya keng 6.4MPa. Ing butterfly check valve malyari yang gawang wafer type, na keraklan maka-install ya pilatan da reng adwang flanges ning pipeline keng porma ning wafer connection.
Ing posisyun ning pamag-install ning butterfly check valve ali ya limitadu, malyari yang i-install keng horizontal pipeline, vertical pipeline o inclined pipeline.
Ing diaphragm check valve masanting ya para kareng pipeline na prone keng water hammer. Ing diaphragm malyari neng ilako ing water hammer a sangkan ning pamagbaliktad ning medium. Uling ing temperatura ning obra ampo ing pressure da reng diaphragm check valves limitadu la keng materyales ning diaphragm, keraklan gagamitan do kareng low-pressure ampo normal-temperature a pipeline, lalu na kareng gripu a danum. Keraklan, ing temperatura ning medium atyu ya pilatan ning -20~120°C, at ing pressure ning obra mas ditak ya pa keng 1.6MPa, pero ing diaphragm check valve malyari yang mika mas maragul a diametru, at ing maximum DN malyari yang maygit 2000mm.
Ing diaphragm check valve maralas yang magagamit kareng milabas a banua pauli ning kayang masanting a waterproof performance, medyu simple ya istruktura ampo mababang gastus keng pamaglalang.
Ing ball check valve atin yang masanting a pamag-seal, mapanalig a operasyun ampo masanting a water hammer resistance uling ing seal metung yang sphere a makabalut keng goma; at uling ing seal malyari yang metung a bola o dakal a bola, malyari yang gawang maragul a diametru. Nanupata, ing kayang seal metung yang hollow sphere a makabalut king goma, a e ustung para kareng high-pressure pipelines, nung e ustung para kareng medium ampong low-pressure pipelines.
Uling ing shell material ning ball check valve malyari yang gawa keng stainless steel, ampo ing hollow sphere ning seal malyari yang takpan keng PTFE engineering plastic, malyari ya namang gamitan kareng pipelines a maki general corrosive media.
Ing temperatura na ning check valve ayni atyu ya pilatan ning -101~150°C, ing nominal a pressure ≤4.0MPa ya, ampo ing nominal a diameter range atyu ya pilatan ning 200~1200mm.
Oras ning pamagpost: Mar-23-2022
