Mavavu omangira okhala ndi pulagi yooneka ngati koni amatchedwa ma plug valves. Powazungulira madigiri 90, doko lolowera pa pulagi limatha kutsegulidwa kapena kutsekedwa, ndikulilekanitsa ndi doko lodutsa pamagetsi a valve. Mavavu a pulagi ndi otsegula ndi kutseka mofulumira kudzera mu ma valve omwe amagwiritsidwa ntchito m'mapaipi apakati otsika omwe amafunikira kutsegula ndi kutseka kwathunthu pakanthawi kochepa. Kukumba minda yamafuta, kupanga zida zoyendera ndi zoyenga, mafakitale amafuta ndi petrochemical, kupanga gasi ndi gasi wamafuta amafuta, gawo la HVAC, ndi mafakitale onse amazigwiritsa ntchito kwambiri. Chachiwiri, ma valve a pulagi angagwiritsidwe ntchito kunyamula madzi omwe ali ndi zolimba zoyimitsidwa ndi tinthu tating'onoting'ono. Zida zokhala ndi kristalo zitha kunyamulidwa pogwiritsa ntchito valavu yowongoka yokhala ndi jekete yotsekera.
Zotsatirazi ndi zinthu zofunika kwambiri za valavu ya pulagi ya JLPV:
1. Mapangidwe owongoka amalola kusinthana kwachangu, kukana kwamadzimadzi otsika, ndi ntchito yofulumira ya sitiroko.
2. Pali mitundu iwiri ya zisindikizo: zisindikizo zofewa ndi zosindikizira zamafuta.
3. Pali mitundu itatu ya kamangidwe: kukweza, ferrule, ndi inverted.
4. Mapangidwe otetezeka, anti-static kumanga, ndi kugwiritsa ntchito.
5. Palibe choletsa pamayendedwe oyika ndipo media imatha kuyenda mbali ziwiri. Kugwiritsa ntchito ndi kukonza pa intaneti ndizothandiza kwambiri.
Mapangidwe a ma valve a plug a JLPV ali motere:
1. Kukula: 2 "mpaka 14" DN50 mpaka DN350
2. Kupanikizika: Kalasi 150lb mpaka 900lb PN10-PN160
3. Zida: zitsulo za carbon, zitsulo zosapanga dzimbiri ndi zipangizo zina zachitsulo.
NACE MR 0175 anti-sulfure ndi anti-corrosion zitsulo zipangizo.
4. Kulumikizana kumatha: ASME B 16.5 mu nkhope yokwezeka (RF), Flat face(FF) ndi Ring Type Joint (RTJ)
ASME B 16.25 m'mapeto opotoka.
5. Miyezo ya nkhope ndi maso: igwirizane ndi ASME B 16.10.
6. Kutentha: -29 ℃ mpaka 580 ℃
Ma valve a JLPV amatha kukhala ndi zida zamagetsi, ma pneumatic actuators, ma hydraulic actuators, magetsi oyendetsa magetsi, ma bypass, zida zokhoma, ma chainwheel, zimayambira zokulirapo ndi zina zambiri zilipo kuti zikwaniritse zosowa za makasitomala.
