Yini tintfo letivame kusetjentiswa kuvala emavalvu?

Kunetinhlobo letiningi temavalvu, kepha umsebenti losisekelo uyafana, lokusho kutsi, kuhlanganisa noma kunciphisa kugeleta lokusemkhatsini. Ngakho-ke, inkinga yekuvala yevalve ivelele kakhulu.

Kucinisekisa kutsi le valve ingasika kahle kugeleta lokusemkhatsini ngaphandle kwekuvuta, kuyadzingeka kwenta siciniseko kutsi sivalo se valve asiphatseki. Kunetizatfu letinyenti tekuvuza kwevalve, kufaka ekhatsi kwakhiwa kwesakhiwo lesingakacabangeki, indzawo yekutsintsana yekuvala lenesici, tincenye tekubopha letikhululekile, kufaneleka lokukhululekile emkhatsini wemtimba wevalve kanye nebhonethi, njll Tonkhe letinkinga tingaholela ekuvaleni lokubi kwevalve. Kulungile, ngaleyo ndlela kudala inkinga yekuvuza. Ngakoke, bucwepheshe bekuvala emavalvu bucwepheshe lobubalulekile lobuhlobene nekusebenta kwemavalvu kanye nelizinga, futsi budzinga lucwaningo loluhlelekile nalolujulile.

Tintfo letivame kusetjentiswa tekuvala emavalvu ikakhulukati tifaka letinhlobo letilandzelako:

1. NBR

Kumelana ne oyili lokuhle kakhulu, kumelana nekugcoka lokusezingeni leliphakeme, kumelana nekushisa lokuhle, kunamatsela lokucinile. Lokungakalungi kwayo kumela lokubi kwekushisa lokuphansi, kumela lokubi kwe ozone, timphahla tagezi letimbi, kanye nekugucuka lokuphansi kancane.

2. I-EPDM

Sici lesibaluleke kakhulu se EPDM kumela kwayo lokusetulu kwe oxidation, kumelana ne ozone kanye nekumelana nekugcola. Njengoba i-EPDM ingeyemndeni we-polyolefin, inetimphawu letinhle kakhulu te-vulcanization.

3. I-PTFE

iPTFE inemandla ekumelana nemakhemikhali, kumelana nemafutsa lamaningi kanye netinhlayiya (ngaphandle kwema ketones kanye nema esters), kumelana nesimo selitulu lesihle kanye nekumelana ne ozone, kepha kumelana nekubandza lokubi.

4. Insimbi lephosiwe

Caphela: Insimbi lephosiwe isetjentiselwa emanti, igesi kanye nemidiya yemafutsa ngekushisa kwa 100.≤100°C kanye nemfutfo lomncane we .≤1.6mpa.

5. I-alloy lesekelwe ku-nickel

Caphela: Ema-alloys lasekelwe ku-Nickel asetjentiselwa emaphayiphi lanekushisa lokungu-70 ~ 150 .°C kanye nemfutfo webunjiniyela PN .≤20.5mpa.

6. Inhlanganisela yelitfusi

I-alloy ye-Copper inekumelana lokuhle nekugcoka futsi ilungele emaphayiphi emanti kanye nemphunga ngekushisa .≤200°Ckanye nekucindzeteleka lokubitwako PN .≤1.6mpa.