Design Standard: API 594
Kutentha kwapakatikati: ASME B16.34
Kukula: 2 "mpaka 48"
Mtundu wa Pressure: Class 150 mpaka 2500
Mapeto olumikizira: Wafer, Lug, Flanged RF, RTJ
Makulidwe Opendekeka: ASME B16.5 (≤24”), ASME B16.47 Series A kapena B (>24”)
Makulidwe a nkhope ndi nkhope: API 594
Kuyang'anira ndi Kuyesa: API 598
Zida Zathupi: WCB, CF8, CF3, CF3M, CF8M, A995 4A, 5A, 6A, C95800, INCONEL 625, INCONEL 825, MONEL, WC6, WC9.
Kuchepetsa Zida: 1 #, 5#,8#,10#,12#,16#
Kasupe: INCONEL 718, X750
Wosasunga
Mpando Wofewa
NACE MR 0175
Mavavu apawiri a Plate Check Valve ndi valavu yosabwerera kuti asabwererenso m'mapaipi, ndipo ali ndi zabwino zambiri poyerekeza ndi BS1868 kapena API6D swing ma valve, kapena ma piston check valves.
1.Kulemera pang'ono. Chifukwa cha kapangidwe kake kagawidwe ka mbale ziwiri, mbale yapawiri Yang'anani kulemera kwa valavu kumatha kuchepetsedwa ndi 80-90% poyerekeza ndi ma valve ake ochiritsira.
2.Lower Pressure Drop. Chifukwa mbale iliyonse imangotenga theka la gawo la cheke cha swing, Valve yamitundu iwiri imagawa mphamvu yonse pakati. Theka la mphamvu pa mbale iliyonse imafuna theka la makulidwe ake, zomwe zimapangitsa kuti pakhale chimbale chogwedeza ndi gawo limodzi mwa zinayi za misa. Mphamvu yofunikira kusuntha mbale sizikuwonjezeka ndi kulemera kwa mbale. Chifukwa cha kuchepa kwa mphamvu yake, ma valve omwe amawunika ma mbale apawiri amakhala ndi kutsika kochepa kwambiri.
3.Retainerless Design. Ma valve ambiri amacheke ali ndi mipata inayi m'thupi la valavu pomwe pini ya hinge ndi pini yoyimitsa imayikidwa. Palibe mabowo omwe amayendetsa kutalika kwa thupi la valve mumapangidwe osungira. Mapangidwe osasungika amatha kukhala opindulitsa pakugwiritsa ntchito komwe mpweya wowopsa kapena wowononga kwambiri umadutsa mu valavu kuti achepetse mwayi woti mpweya uliwonse utuluke kudzera m'mabowo a valve.
4.Itha kugwiritsidwa ntchito pakuyika mowongoka pomwe BS 1868 swing cheque mavavu sangagwiritsidwe ntchito pakuyika molunjika.