Chii chinonzi NPT Fittings?

Zvishandiso zveNPT, kana kuti National Pipe Taper fittings, imhando yezvishandiso zveshinda zvinoshandiswa mumapombi nemapombi. Zvishandiso izvi zvine shinda dzakatetepa dzinoita kuti pave nechisimbiso kana zvakasimbiswa. Zvishandiso zveNPT zvinowanzo shandiswa munzvimbo dzinofanira kudzivirirwa kudonha kwemvura, senge mumvura, mhepo, kana gasi. Zvinowanikwa muzvinhu zvakasiyana-siyana zvakaita sebrass, stainless steel, uye plastic, uye zvinouya muhukuru hwakasiyana kuti zvikwane dhayamita dzakasiyana dzepombi nemapitchi eshinda. Zvishandiso zveNPT zvinoshandiswa zvakanyanya kuNorth America nedzimwe nzvimbo, asi zvakakosha kuziva kuti hazvienderane neshinda dzakafanana nedzinowanikwa muzvishandiso zveBritish Standard Pipe (BSP).

Kuwedzera kune zvigadziko zveNational Pipe Taper (NPT) zvinowanzoshandiswa muNorth America, kune zvimwe zvigadziko zveNational Pipe Taper zvinoshandiswa munzvimbo dzakasiyana pasi rose. Zvimwe zvacho zvinosanganisira:

BSPP (British Standard Pipe Parallel): Inoshandiswawo muUK nedzimwe nyika dzichitevedzera mitemo yeBritain. Kusiyana neBSPT, BSPP fittings dzine tambo dzakafanana. Dzimwe nguva dzinonzi G threads.

BSPT (British Standard Pipe Taper): Inowanzoshandiswa muUnited Kingdom nedzimwe nyika dzichitevedzera mitemo yeBritain. Zvishandiso zveBSPT zvine kona ye55 degrees uye zvinowanzonzi R kana Rp threads.

JIS (Maitiro Eindasitiri eJapan): Inoshandiswa muJapan nedzimwe nyika dzeAsia, JIS fittings ine kona yakatetepa ye30 degrees uye yakagadzirwa zvakafanana neBSPT fittings.

ISO 7/1 (International Organisation for Standardization): Inoshandiswa zvakanyanya muEurope nedzimwe nzvimbo dzichitevedzera ISO standards. ISO 7/1 fittings dzine angle yakatetepa ye55 degrees uye dzakafanana neBSPT fittings asi dzine musiyano muhukuru hweshinda.

Iyi ingori mienzaniso mishoma yezvigadzirwa zvemapombi zvemhando yepamusoro zvenyika, chimwe nechimwe chine zvirevo zvacho uye mashandisirwo azvo. Zvakakosha kushandisa michina yakakodzera yekushandisa kwako kuti uve nechokwadi chekuti inoenderana uye inoshanda.