Isiseko seValve

A ivalvesisixhobo sokulawula umgca wolwelo. Umsebenzi wayo osisiseko kukudibanisa okanye ukunqumla ukujikeleza kwendandatho yombhobho, ukuguqula ulwalathiso lokuhamba kwe-medium, ukulungelelanisa uxinzelelo kunye nokuhamba kwe-medium, kunye nokukhusela ukusebenza okuqhelekileyo kombhobho kunye nezixhobo.

一.Ukuhlelwa kweevalvu

Ngokusetyenziswa kunye nomsebenzi unokwahlulwa ube:

1. Ivalve yokuvala: cima okanye uqhagamshele umbhobho ophakathi. Ezinje: ivelufa yesango, ivalve yeglowubhu, ivalve yebhola, ivalve yebhabhathane, ivalve yediaphragm, ivalve yeplagi.

2. Khangela ivalve: thintela isiphakathi kumbhobho ukuba singabuyeli ngasemva.

3. Ivalve yokusabalalisa: tshintsha indlela yokuhamba ye-medium, ukusabalalisa, ukwahlula okanye ukuxuba okuphakathi. Njengeevalvu zokusasaza, imigibe yomphunga, kunye neevalvu zebhola ezintathu.

4. Ivalve yokulawula: lungisa uxinzelelo kunye nokuhamba kwendawo. Njengevalve yokunciphisa uxinzelelo, ivalve elawulayo, ivalve ye-throttle.

5. Ivalve yokhuseleko: thintela uxinzelelo oluphakathi kwisixhobo ekugqithiseni ixabiso elichaziweyo, kwaye unikeze ukhuseleko lokhuseleko olugqithisileyo.

二. Iiparamitha ezisisiseko zeivalve

1. I-diameter yegama levalve (DN).

2. Uxinzelelo oluqhelekileyo lwevalve (PN).

3. Uxinzelelo kunye nomgangatho wokushisa we-valve: Xa ukushisa okusebenzayo kwe-valve kudlula ubushushu bereferensi yoxinzelelo lwegama, uxinzelelo oluphezulu lomsebenzi kufuneka luncitshiswe ngokufanelekileyo.

4. Ukuguqulwa kweyunithi yoxinzelelo lwevalve:

5. Indlela esebenzayo yeivalve:

Izivalo zemizi-mveliso zisetyenziswa kwipetroleum, kushishino lweekhemikhali, kwisinyithi, amandla ombane, amandla enyukliya kunye namanye amashishini. Amajelo osasazo adlula kuwo aquka iigesi (umoya, umphunga, iammonia, irhasi yamalahle, igesi yepetroleum, igesi yendalo, njl.); ulwelo (amanzi, i-ammonia elulwelo, ioli, iiasidi, iialkali, njl. njl.). Eminye yayo idla ngokutya okwemipu, yaye eminye iyingozi kakhulu.