Wafer check valvesʻike ʻia hoʻi ʻo nā pahu hoʻihoʻi hope, nā kīwaha backstop, a me nā kīwaha backpressure.Wehe ʻia a pani ʻia kēia mau ʻano valve e ka ikaika i hana ʻia e ke kahe ʻana o ka mea waena ponoʻī i loko o ka pipeline, nona kahi ʻano valve aunoa.
ʻO ka valve check e hilinaʻi i ke kahe ʻana o ka waena ponoʻī a wehe a pani koke i ka flap valve, i hoʻohana ʻia no ka pale ʻana i ka valve backflow medium, i ʻike ʻia hoʻi ʻo ka valve check, check valve, backflow valve, a me ke kua.Aia ka valve check i kahi ʻano valve aunoa, ʻo kāna hana nui ka pale ʻana i ka hoʻihoʻi ʻana o ka media, kaohi ʻana i ka pahū a me ka hoʻohuli ʻana i nā kaʻa, a me ka hoʻokuʻu ʻana o ka ipu.Hiki ke hoʻohana ʻia nā kiwi hoʻopaʻa no ka hāʻawi ʻana i ke kaomi e piʻi aʻe ma mua o ke kaomi ʻōnaehana o ka ʻōnaehana kōkua e hāʻawi i kahi pipeline lako.Hiki ke hoʻokaʻawale ʻia ka pahu hoʻopaʻa i loko o ka valve check swing (e like me ke kikowaena o ka gravity rotation) a me ka lift check valve (e neʻe ana ma ke axis).
ʻO ka mea mua, ʻo ka hoʻohana ʻana i ka valve check valve clip-on i hoʻokomo ʻia i loko o ka ʻōnaehana paipu, ʻo kāna hana nui ka pale ʻana i ka hoʻihoʻi ʻana o ka media, ʻo ka valve check kahi ʻano o ka valve aunoa e hilinaʻi ana i ka kaomi media e wehe a pani.ʻO ka pahu hoʻopaʻa paʻa he kūpono no ka nominal pressure PN1.0MPa ~ 42.0MPa, Class150 ~ 25000, nominal diameter DN15 ~ 1200mm, NPS1 / 2 ~ 48, ka mahana hana -196 ~ 540 ℃ o nā pipelines like ʻole, i hoʻohana ʻia e pale i ka backflow media.Ma o ke koho ʻana i nā mea like ʻole, hiki ke hoʻopili ʻia i ka wai, ka mahu, ka aila, ka waikawa nitric, ka waikawa acetic, ka media oxidizing ikaika a me ka uric acid a me nā mea ʻē aʻe.
ʻO nā mea nui o ka pahu wafer check valve he carbon steel, haʻahaʻa haʻahaʻa haʻahaʻa, duplex steel (SS2205 / SS2507), titanium alloy, alumini keleawe, Inconel, SS304, SS304L, SS316, SS316L, chrome-molybdenum kila, Monel (400/ 500), 20 # alloy, Hastelloy a me nā mea metala ʻē aʻe.
ʻO ke kolu, nā kūlana a me nā loina o ka valve check wafer
Hoʻolālā: API594, API6D, JB/T89372,
Ka lōʻihi o ke alo: API594, API6D, DIN3202, JB/T89373,
Ka nui o ke kaomi a me ka mahana: ANSI B16.34, DIN2401, GB/T9124, HG20604, HG20625, SH3406, JB/T744,
Ka ho'āʻo a me ka nānā kūlana: API598, JB/T90925
Piping Flanges:JB/T74~90,GB/T9112-9124,HG20592~20635,SH3406,ANSI B 16.5,DIN2543-2548,GB/T13402,API60B5.
ʻO ka hā, nā hiʻohiʻona hoʻolālā o ka pinch check valve
1.Short hale lōʻihi, kona hale lōʻihi mea wale 1/4 ~ 1/8 o ka kuʻuna swing flange check valve.
2. ka leo liʻiliʻi, ke kaumaha māmā, ʻo kona kaumaha wale nō ka flange check valve 1/4 ~ 1/2
3. Paʻa koke ka puʻu valve, liʻiliʻi ke kaomi hāmare wai
4. Hiki ke hoʻohana ʻia ka paipu horizontal or vertical, maʻalahi e hoʻouka
5. Ala hele maʻemaʻe, pale wai haʻahaʻa
6.Sensitive hana, maikaʻi sealing hana
7. He pōkole ka hahau disc, liʻiliʻi ka hopena pani
8. He maʻalahi a paʻa ka hale holoʻokoʻa, a nani ke ʻano
9. ʻO ke ola lōʻihi a me ka hana hilinaʻi
ʻelima.ʻO ka hana hoʻopaʻa ʻana o ka pahu wafer check valve Hiki ke hoʻokō i ka leakage zero leakage, akā, ʻaʻole ka valve leakage zero-leakage.Loaʻa iā ia kahi leakage rate.Wahi a ka maʻamau o ka nānā ʻana o API598, no ka pahu pahu me ka noho metala, no ka nui o DN100, ʻo ka nui o ka leakage wai i kēlā me kēia minuke he 12CC.
