Iivalvu zeglowubhu zidla ngokusetyenziswa njengeevalvu zolawulo xa ukutswina okanye ukudityaniswa kwe-throttling kunye nokuvalwa kuyimfuneko.Zisetyenziswa kakhulu kwiinkqubo ezininzi zemibhobho, kubandakanywa namanzi, i-petroleum, ikhemikhali, ukutya, amayeza, amandla, ulwandle, isinyithi, kunye neenkqubo zamandla, phakathi kwabanye.
Isitywina sevalve yeglowubhu yenziwe ngumgangatho wokutywina wesihlalo kunye nomphezulu wokutywina wediski.Njengoko i-stem ijikeleza, i-disc ihamba ngokuthe nkqo kwi-axis yesihlalo sevalve.
Umsebenzi wevalve yeglowubhu kukutywina okuphakathi ngokuchasene nokuvuza ngokusebenzisa uxinzelelo lwesikhondo sevalvu ukunyanzela umphezulu wokutywina wediskhi kunye nomphezulu wokutywina wesitulo ukuba ulingane.
Oku kulandelayo ziimpawu eziphambili zokwakha zevalve yeglowubhu yeJLPV:
1.Uyilo oluqhelekileyo lwediskhi okanye uhlobo lweplagi yeconical.
Isiqu kunye ne-disc ngokukhululekileyo spin, kwaye i-disc ine-engile eyahlukileyo kune-ring yesihlalo.Esi simbo kucingelwa ukuba sesona silula ukusilungisa ebaleni, sibonelela ngelona nqanaba liphezulu lesiqinisekiso sokuvala, kwaye akulula ukuxinga kwisitulo somzimba.
2.Isihlalo esinokuba siyinxalenye yomzimba okanye isihlalo esidityaniswe kwiintlobo ngeentlobo zezinto.
Iinkqubo ezivunyiweyo ze-WPS zilandelwa ngokufanelekileyo xa udiza i-overlay.Ubuso beringi yezihlalo bunomatshini, bacocwa ngobuchule, kwaye bahlolwa emva kokuwelda kunye naluphi na unyango oluyimfuneko lobushushu phambi kokuba ludityaniswe.
3.Isiqu esinebhonethi etywiniweyo ephezulu kunye nokupakisha.I-disc kunye ne-stem ifakwe yi-disc nut kunye nepleyiti enendandatho yokwahlula.
I-disc-ring retainer kunye ne-disc nut zisetyenziselwa ukukhusela i-disc kwi-stem.Ukukhutshwa kwe-Fugitive okuphantsi kuyisiphumo semilinganiselo kunye nokugqiba ukuchaneka ekubeni ziqinisekisa ubomi obude kunye nokuqina okubalaseleyo kwindawo yokupakisha.
Uluhlu lweJLPVuyilo lwevalvu yeglowubhu luhamba ngolu hlobo lulandelayo:
1.Ubukhulu: 2 "ukuya ku-48" DN50 ukuya kwi-DN1200
2.Uxinzelelo: Udidi lwe-150lb ukuya kwi-2500lb PN16 ukuya kwi-PN420
I-3.Izinto eziphathekayo: Insimbi yeCarbon kunye nensimbi engenasici kunye nezinye izinto ezikhethekileyo.I-NACE MR 0175 i-anti-sulfur kunye ne-anti-corrosion metal materials
4.Unxibelelwano luphela: ASME B 16.5 kubuso obuphakanyisiweyo (RF), ubuso beFlat (FF) kunye noLuhlu lweRingi ngokudibeneyo (RTJ）ASME B 16.25 kwiziphelo ze-butt welding.
5.Imilinganiselo yobuso ngobuso: ihambelana ne-ASME B 16.10.
6.Ubushushu: -29℃ ukuya ku-425 ℃
JLPViivalvu zinokuthi zixhotyiswe nge-gear operator, i-pneumatic actuators, i-hydraulic actuators, i-actuator yoMbane, i-bypasses, izixhobo zokutshixa, i-chainwheels, iziqu ezandisiweyo kunye nezinye ezininzi ziyafumaneka ukuhlangabezana neemfuno zabathengi.
