Uri kuisa mutsara mutsva wemvura uye tora PVC valve. Asi kana iwe usingazivi muganhu wayo wekumanikidza, uri kuisa pangozi yekuputika kunotyisa, mafashama makuru, uye inodhura system downtime.

A standard Schedule 40 PVC bhora vharafu inowanzotarwa kubata inokwana zana nemakumi mashanu PSI (Pounds per Square Inch) pa73°F (23°C). Iyi chiyero chekumanikidza inodzikira zvakanyanya sezvo tembiricha yemvura inowedzera, saka zvakakosha kuti utarise zvakatemwa nemugadziri.

Nhamba iyoyo, 150 PSI, ndiyo mhinduro iri nyore. Asi mhinduro chaiyo yakanyanya kuoma, uye kuinzwisisa ndiyo kiyi yekuvaka yakachengeteka, yakavimbika system. Ndinowanzokurukura izvi naBudi, maneja wekutenga muIndonesia. Anodzidzisa timu yake kubvunza vatengi kwete "kumanikidza kupi kwaunoda?" asiwo "tembiricha yakadini?" uye "uri kumisa sei kuyerera?" Pombi inogona kugadzira mapikisi ekumanikidza kure pamusoro peavhareji yesystem. Ivhavha inongova chikamu chimwe chehurongwa hwose. Kuziva kuti idzvinyiriro yakawanda sei yainokwanisa kubata hakusi kungoverenga nhamba; ndezvekunzwisisa kuti system yako ichaita sei munyika chaiyo.

Chii chinonzi pressure rating yePVC valve?

Iwe unoona "150 PSI" yakadhindwa pavharuvhu, asi izvo zvinorevei chaizvo? Kuishandisa mumamiriro ezvinhu asina kunaka kunogona kuita kuti ikundike, kunyange kana kudzvinyirirwa kuchiita sekuderera.

Chiyero chekumanikidza kwevharuvhu yePVC, kazhinji 150 PSI yeChirongwa 40, ndiyo yakanyanya kuchengetedzeka kushanda kwakachengeteka pakupisa kwekamuri. Sezvo tembiricha inokwira, iyo PVC inopfava uye simba rayo rekubata simba rinodonha zvakanyanya.

Funga nezvekumanikidzwa kwechiyero sesimba rayo mumamiriro ezvinhu akakwana. Pamukamuri tembiricha yakasununguka ye73°F (23°C), mureza wePVC vharafu chena yakasimba uye yakasimba. AsiPVC inonzi thermoplastic, zvinoreva kuti inopfava nekupisa. Iyi ndiyo pfungwa inonyanya kukosha kuti unzwisise: unofanirwa "kudzikamisa" kudzvanywa kwekushisa kwepamusoro. Semuyenzaniso, pa100°F (38°C), iyo 150 PSI vharuvhu inogona kungochengeteka kusvika ku110 PSI. Paunosvika pa140°F (60°C), mwero wayo wepamusoro wadzikira kusvika pamakumi matatu PSI. Ichi ndicho chikonzero chiyero chePVC chiri chemitsetse yemvura inotonhora chete. Nekumanikidza kwepamusoro kana tembiricha yakakwira zvishoma, waizotarisaRongedza 80 PVC(kazhinji rima grey), iyo ine madziro akakora uye yakakwirira yekutanga yekumanikidza chiyero.

PVC Pressure Rating vs. Temperature

Chii chinogumira kumanikidzwa kwevharuvhu yebhora?

Iwe unoziva yako system's static pressure iri pasi pemuganho zvakachengeteka. Asi kuvharwa kwevharuvhu kamwe kamwe kunogona kugadzira spike yekumanikidza inovhuvhuta kupfuura iyo muganhu, ichikonzera kuputika ipapo.

Iyo yakataurwa pressure limit ndeye static, isiri-shock pressure. Muganho uyu hauverengeri masimba ane simba sengesando yemvura, kamwe-kamwe kudzvinyirirwa kwemhepo kunogona kuputsa nyore nyore valve yakarongerwa kumanikidziro akakwirira zvikuru.

Sando yemvura ndiyo inouraya yakanyarara yemidziyo yepombi. Fungidzira pombi refu yakazara nemvura ichifamba nekukurumidza. Paunorova vharavhavhavha, mvura yese inofamba inofanira kumira ipapo ipapo. Iko kukurumidza kunogadzira shockwave yakakura inofamba ichidzokera nepapombi. Iyi pressure spike inogona kuita 5 kusvika 10 nguva yakajairika system pressure. Sisitimu inomhanya pa60 PSI inogona kuona kwechinguva spike ye600 PSI. Hapana yakajairwa PVC bhora vharafu inogona kumira izvo. Ndinogara ndichiudza Budi kuti ayeuchidze vatengi vake nezveizvi. Kana vharafu ikakundikana, zviri nyore kupa mhosva chigadzirwa. Asi kazhinji, dambudziko dhizaini dhizaini isingaverenge sando yemvura. Iyo yakanyanya kudzivirira ndeyekuvhara mavharuvhu zvishoma nezvishoma. Kunyangwe nequarter-turn ball valve, kushanda mubato zvakanaka pamusoro pesekondi kana maviri pachinzvimbo chekuchivhara vhara kunoita musiyano mukuru.

Yakawanda sei kudzvinyirirwa inogona kumira PVC?

Iwe wakasarudza vharafu yakarurama, asi zvakadini nepombi? Yako sisitimu yakasimba chete senge isina kusimba link, uye kutadza kwepombi kwakangoipa sekutadza kwevharuvhu.

Kuwanda kwekumanikidzwa kwePVC kunogona kumira kunoenderana ne "chirongwa" kana ukobvu hwemadziro. Standard Schedule 40 PVC pombi ine yakaderera kumanikidzwa ratings pane gobvu-masvingo, mamwe maindasitiri Schedule 80 pombi.

Kukanganisa kwakajairika kutarisa chete pachiyero chevharuvhu. Iwe unofanirwa kuenzanisa zvikamu zvako. Iyo 2-inch Schedule 40 pombi, iyo yakajairika pombi chena yaunoona kwese kwese, inowanzo kurongerwa kutenderedza 140 PSI. Iyo 2-inch Schedule 80 pombi, ine madziro akakora uye kazhinji ine grey, yakatemerwa anopfuura mazana maviri PSI. Iwe haugone kuwedzera simba rehurongwa hwako nekushandisa vharafu yakasimba. Kana iwe ukaisa Schedule 80 vharafu (yakatemerwa 240 PSI) paSchedule 40 pombi (yakatemerwa 140 PSI), yako yakanyanya kuchengetedzeka kudzvanywa ichiri 140 PSI chete. Iyo pombi inova iyo isina simba link. Kune chero sisitimu, iwe unofanirwa kuona kudzvanywa kwechikamu chimwe nechimwe - mapaipi, mafittings, uye mavharuvhu - uye kugadzira yako system yakatenderedza yakaderera-yakayerwa chikamu.

Pipe Chirongwa Kuenzanisa (Muenzaniso: 2-inch PVC)

Mavharuvhu ebhora ePVC akanaka here?

Iwe unotarisa pavharuvhu yepurasitiki isingaremi uye unofunga kuti inonzwa yakachipa. Unogona here kuvimba nechikamu ichi chisingadhuri kuti ive chikamu chakavimbika muhurongwa hwako hwemvura yakaoma?

Hongu, yepamusoro-soroPVC bhora mavharuvhudzakanyanya kunaka kune chinangwa chadzo. Kukosha kwavo hakusi musimba rakashata, asi mukusadzivirirwa kwavo kwakakwana kune ngura, izvo zvinoita kuti vavimbike kupfuura simbi mumashandisirwo mazhinji.

Maonero e "kuchipa" anobva pakuenzanisa PVC nesimbi. Asi izvi zvinopotsa pfungwa. Mumashandisirwo mazhinji emvura, kunyanya mukurima, aquaculture, kana masisitimu emadziva, ngura ndicho chikonzero chikuru chekutadza. Chivharo chendarira kana chesimbi chinoita ngura uye chinobata nekufamba kwenguva. A quality PVC valve, yakagadzirwa kubva ku100% virgin resin ine zvigaro zvePTFE zvakatsvedzerera uye zvisingaite O-rings, hazvizoiti. Ichashanda zvakanaka kwemakore munzvimbo inoparadza simbi. Budi anokunda pamusoro pevatengi vanokahadzika nekugadzirisa zvakare mubvunzo. Mubvunzo hausi "ipurasitiki yakanaka zvakakwana here?" Mubvunzo ndewokuti "simbi inogona kurarama nebasa?" Nokuda kwekutonga kwemvura inotonhora, kunyanya apo makemikari kana munyu aripo, vheji yePVC yakagadzirwa zvakanaka haisi sarudzo yakanaka chete; ndiyo yakangwara, yakavimbika, uye inodhura-inoshanda sarudzo kwenguva refu.

Mhedziso

A PVC bhora vharafu inogona kubata 150 PSI pakamuri tembiricha. Kukosha kwayo kwechokwadi kuri mukusaora, asi nguva dzose inokonzera tembiricha uye sando yemvura kune yakachengeteka, inogara kwenguva refu.