Membala wotsegulira ndi wotseka (mpira) amayendetsedwa ndi tsinde la valve ndipo amazungulira mozungulira tsinde la valve.Amagwiritsidwa ntchito kwambiri podula kapena kulumikiza sing'anga mu payipi, amathanso kugwiritsidwa ntchito pakuwongolera ndi kuwongolera madzimadzi, valavu yamtunduwu mupaipi nthawi zambiri iyenera kuyikidwa mopingasa.
Zochita za valve ya pulasitiki:
(1) High ntchito kuthamanga: kuthamanga ntchito zipangizo zosiyanasiyana pa kutentha yachibadwa akhoza kufika 1.0Mpa.
(2) lonse ntchito kutentha: ntchito PVDF kutentha ndi -20 ℃ ~ + 120 ℃;Kutentha kwa ntchito ya RPP ndi -20 ℃ ~ + 95 ℃;Kutentha kwa ntchito ya UPVC ndi -50 ℃ ~ + 95 ℃.
(3) kukana kwamphamvu: RPP, UPVC, PVDF, CPVC ali ndi mphamvu zamakina apamwamba komanso kukana.
(4) kukana kwamadzimadzi kumachepa: khoma lamkati lamkati ndi losalala, kugundana kocheperako ndi kochepa, kuyenda bwino ndikwambiri.
(5) ntchito kwambiri mankhwala: mankhwala si poizoni, zoipa, asidi ndi alkali kukana, dzimbiri kukana, osiyanasiyana ntchito.PPR imagwiritsidwa ntchito makamaka ngati chakudya, chakumwa, madzi apampopi,
Madzi oyera ndi mapaipi ena amadzimadzi ndi zida zokhala ndi zofunikira zaukhondo, zitha kugwiritsidwanso ntchito ngati mapaipi amadzimadzi ndi zida zokhala ndi dzimbiri pang'ono;
RPP, UPVC, PVDF, CPVC amagwiritsidwa ntchito makamaka ngati madzi (gasi) otaya asidi amphamvu, alkali amphamvu ndi asidi osakanikirana okhala ndi dzimbiri.
(6) unsembe mosavuta, kusindikiza bwino: mankhwala ndi kuwala khalidwe, ntchito kugwirizana kapena kuwotcherera, wathunthu chitoliro zovekera, zomangamanga zosavuta, kusindikiza bwino, otsika ntchito mwamphamvu.
Pulasitiki mpira valavu palokha ndi makhalidwe chachikulu cha dongosolo yaying'ono, kusindikiza odalirika, dongosolo losavuta, yokonza yabwino, kusindikiza pamwamba ndi ozungulira zambiri mu chatsekedwa boma, osati mosavuta kukokoloka sing'anga, ntchito yosavuta ndi kukonza, ntchito madzi, zosungunulira, asidi. ndi mpweya, monga sing'anga wamba ntchito, komanso ndi oyenera zikhalidwe ntchito TV, monga mpweya, hydrogen peroxide, methane ndi ethylene, Amagwiritsidwa ntchito m'mafakitale osiyanasiyana.Thupi la valve ya mpira likhoza kukhala lophatikizana kapena lophatikizidwa.
Nthawi yotumiza: Jul-05-2021