Kukho iinguqulelo ezininzi kwitshaneli yeevalvu zeplagi yokutywina ethambileyo. Ngokuqhelekileyo, ulwelo luyancitshiswa kusetyenziswa uhlobo oluqhelekileyo lokudlula. Ukuguqulwa kwe-Fluid kunokwenziwa ngeendlela ezintathu kunye ne-four-way plug valves. Ukuze uvule kwaye uvale ishaneli, i-valve ye-cock yokuvula kunye nokuvala icandelo yi-cylinder enemingxuma ejikelezayo kwi-axis perpendicular to the channel. Ukusebenzisa iivalve zeplagi yotywino oluthambileyo, imibhobho kunye nezixhobo zemidiya zinokuvulwa kwaye zivaliwe.
Umda wosetyenziso lwevalve yeplagi yokutywina ethambileyo:
Iivalvu zeplagi ezithambileyo zihlala zisetyenziswa kwindawo ezonakalisayo, eyityhefu egqithisileyo, kunye nemithombo yeendaba eyingozi kunye nezinye iindawo eziqinileyo. Kuthintelwe ngamandla ukuba ezi zivalo zivuze kwezi zihlandlo, kwaye imathiriyeli yevalvu ayisayi kungcolisa imidiya. Indawo yokusebenza inokuyalela ukuba intsimbi yekhabhoni, intsimbi yealloyi, okanye intsimbi engatyiwa kufuneka isetyenziswe kumzimba wevalvu.
Iimpawu eziphambili zokwakha zevalve yeplagi yeJLPV zilandelayo:
1. Ukulungele ukusebenza rhoqo, ukuvula nokuvala ngokukhawuleza, ukukhanya.
2. Ivalve yesitywina ethambileyo yokumelana nolwelo incinci.
3. Isakhiwo esilula, umthamo omncinci, ubunzima obulula, ukugcinwa lula.
4. Ukusebenza kokutywina kwevalve yesitywina ethambileyo kulungile.
5. Akukhawulelwanga ngumkhombandlela wofakelo, ukuhamba kwendawo ephakathi kunokuba ngqongqo.
6. Akukho ngcangcazelo, ingxolo ephantsi.
Uluhlu loyilo lwevalvu yeplagi yeJLPV luloluhlobo lulandelayo:
1. Ubungakanani: 2 "ukuya kwi-14" DN50 ukuya kwi-DN350
2. Uxinzelelo: Iklasi 150lb ukuya 900lb PN10-PN160
3. Izinto eziphathekayo: i-carbon steel, insimbi engenasici kunye nezinye izinto eziqhelekileyo zetsimbi.
I-NACE MR 0175 i-anti-sulfur kunye ne-anti-corrosion metal materials.
4. Uqhagamshelo luphela: ASME B 16.5 kubuso obuphakanyisiweyo (RF), ubuso obuFlat (FF) kunye noLuhlu lweRingi ngokudibeneyo (RTJ）
I-ASME B 16.25 kwisiphelo esikrufu.
5. Imilinganiselo yobuso ngobuso: ihambelana ne-ASME B 16.10.
6. Ubushushu: -29℃ ukuya ku-180℃
Iivalvu ze-JLPV zinokuxhotyiswa nge-gear operator, ii-pneumatic actuators, ii-hydraulic actuators, ii-actuator zombane, ii-bypasses, izixhobo zokutshixa, ii-chainwheels, iziqu ezandisiweyo kunye nezinye ezininzi ziyafumaneka ukuhlangabezana neemfuno zabathengi.
