Unoda vharuvhu yemuchina wemakemikari, asi PVC yakajairika haisi sarudzo. Kusarudza zvinhu zvisiri izvo kunogona kukonzera kubuda kwemvura, kudururirwa kune njodzi, uye kukuvara kunodhura kumuviri wako wese.

Vharuvhu yebhora yePP ivharuvhu inodzima yakagadzirwa nepolypropylene, polymer yethermoplastic. Yakasarudzwa zvakanyanya nekuda kwekudzivirira kwayo zvakanyanya kune akasiyana-siyana emaacid, mabhesi, uye makemikari anonyungudutsa, kunyanya kana PVC ikakundikana.

Pandinotaura nevandinoshanda navo vakaita saBudi muIndonesia, hurukuro yacho inowanzopfuura kushandiswa kwemvura kwakajairika. Vatengi vake vazhinji vanoshanda mumaindasitiri akadai sekugadzirisa makemikari kana kugadzirisa mvura, uko mvura yacho inonyorova zvakanyanya kupfuura mvura isina kuzara. Pamabasa aya, kungoshandisa standardVharuvhu yePVCHazvina kukwana. Unoda chinhu chakavakwa kuti chigone kushanda mumamiriro ezvinhu akaoma pasina kuora. Chinhu ichocho chinowanzova polypropylene, kana PP. Chinopa kuchengetedzeka uye kuvimbika kunodiwa pakushandiswa uku kwakakosha mumaindasitiri.

Ndeipi fomu yakazara yePP mumavharuvhu?

Unoona "PP" yakanyorwa mukatarogu asi hauzive kuti inomirirei. Izvi zvinoita kuti zviome kutsvaga zvinhu zvayo kana kutsanangura mabhenefiti ayo kuvatengi vako nechivimbo.

Mhando yakazara yePP mumavharuvhu iPolypropylene. Ipurasitiki yakasimba uye yakareruka iri mumhuri imwe chete yepurasitiki sePVC (Polyvinyl Chloride) nePE (Polyethylene).

Polypropylene ndeimwe yemapurasitiki anoshandiswa zvakasiyana-siyana pasi rose. Ipurasitiki inoshandiswa zvakanyanya kubva kuzvikamu zvemotokari kusvika kumidziyo yemurabhoritari nekuda kwehunhu hwayo hwakasiyana. Munyika yemavharuvhu nemapombi, bhenefiti yayo huru ndeyekuti inoshamisa.kuramba kwemakemikariKusiyana nePVC, inogona kubata maasidhi akawanda akasimba, alkalis, uye organic solvents pasina kupwanyika. Ndosaka isu kuPntek tine mhando dzakasiyana dzeMavharuvhu ePPTinoziva kuti kune mamwe mabasa emaindasitiri, hapana chinotsiva. Kunzwisisa kuti "PP" zvinoreva polypropylene ndiyo nhanho yekutanga yekusarudza vharuvhu yakakodzera yekushandisa makemikari akaomarara.

Polypropylene (PP) vs. Polyvinyl Chloride (PVC)

Pfuma	Polypropylene (PP)	Polyvinyl Chloride (PVC)
Zita reChinhu	Polypropylene	Polyvinyl Chloride
Kushandiswa Kwakanyanya	Indasitiri yemakemikari, marabhoritari, electroplating, mashandisirwo emaindasitiri.	Kutakurwa kwemvura, kudiridza, pombi dzemvura dzemudzimba, madziva emvura.
Kuramba Makemikari	Yakanaka kwazvo; kunyanya inodzivirira maasidhi, mabhesi, uye zvinonyungudutsa.	Zvakanaka; asi hazvikuvadzi kune zvimwe zvinonyungudutsa uye makemikari ane chlorine.
Muganho wekupisa	Yakakwirira; inogona kubata mvura inosvika 80-90°C (175-195°F).	Pasi; kazhinji tembiricha inogumira pa60°C (140°F).
Nzira yekubatanidza	Kubatanidza kupisa (welding) kwakajairika, kunowanikwawo nemasoketi/shinda	Simende inonyungudutsa (gluing) yekuisa mativi emasokisi, shinda.

Chii chinonzi PP ball?

Unoona vharuvhu ine muviri wePVC asi bhora rePP. Musanganiswa uyu wezvinhu unoratidzika kunge usinganzwisisike, uye unoshamisika kana iri nzira yekuderedza mari kana kuti chinhu chine chinangwa chaicho.

Bhora rePP ibhora rinotenderera riri mukati mevharuvhu rakagadzirwa nepolypropylene. Kushandisa bhora rePP mukati mevharuvhu yePVC isarudzo yakanaka yekugadzira inovandudza kusawirirana kwemakemikari pakati pevharuvhu uku ichideredza mitengo.

Iyi inyaya inowanzo kurukurwa. Bhora nezvigaro zvikamu zvevharuvhu zvinogara zvichisangana nemvura, kunyangwe vharuvhu yakavharwa. Zvinonzi "zvikamu zvakanyoroveswa"Muviri wevharuvhu, kune rumwe rutivi, unongoonekwa chete kana vharuvhu yakavhurika. Pakushandisa mvura inoparadza zvishoma, ungasada kuti muviri wese wevharuvhu ugadzirirwe nezvinhu zvinodhura uye zvepamusoro. Nekushandisabhora rePP rinodzivirira mishongamukati memuviri wePVC wakajairika, tinogadzira puratifomu inoshanda zvishomavharuvhuizvo zvichiri kupa dziviriro yakawedzerwa pazvinonyanya kukosha. Ndezvekupa mhinduro yakanangana inoenzanisa mashandiro uye bhajeti zvinoenderana nezvinodiwa nevatinoshanda navo.

PP ball valve ine simba rekuita sei?

Unoziva kuti PP yakanaka pamakemikari, asi inogona here kubata kumanikidzwa? Kushandisa vharuvhu isina kutarisirwa zvakanaka injodzi huru yekuchengetedza iyo inogona kukonzera kuputika kwesystem uye kudururwa kwemakemikari ane njodzi.

Chiyero chekumanikidzwa kwemavharuvhu ebhora ePP ePntek iPN16, inova 16 bar kana kuti inenge 235 PSI patembiricha yemumba (20°C). Zvakakosha kuyeuka kuti chiyero ichi chinodzikira sezvo tembiricha yemvura ichiwedzera. Nguva dzose tarisa chati yepressure-tembiricha yemugadziri.

YeduMavharuvhu ebhora ePPKuPntek vane PN16 rating yakasimba. Izvi zvinoreva kuti vanogona kubata 16 bar of pressure, inova inenge 235 PSI. Iyi rating yepamusoro chiratidzo chemhando yeindasitiri, asi haisi nyaya yakazara. Chinhu chakakosha chandinotsanangurira vadyidzani vakaita saBudi ndechekuti iyi pressure rating yakabatana zvakananga netembiricha yemvura. Mathermoplastic ese, kusanganisira polypropylene, anonyorova uye haaome zvakanyanya sezvaanodziya zvakanyanya. Sezvo zvinhu zvichinyorova, kugona kwayo kudzora kumanikidzwa kunoderera zvakanyanya. Kusateerera iyi 'derating curve' haisi tsika yakaipa chete; ine njodzi. Tinopa chati yakajeka nemavharuvhu edu kudzivirira kutadza kwesystem uye kuona kuti kuchengetedzeka kwevatengi vedu ndiko kunonyanya kukosheswa.

Basa Rakakosha reKuderedza Tembiricha

Kupisa Kwemvura	Kumanikidzwa Kukuru Kwekushanda (PN16 Valve)
20°C (68°F)	16 bhawa (235 PSI)
60°C (140°F)	6.4 bar (94 PSI)
80°C (176°F)	3.2 bhawa (47 PSI)

Cherechedza: Uyu muenzaniso wevharuvhu yePN16. Nguva dzose tarisa pepa reruzivo rePntek kuti uwane nhamba dzakanyatsojeka.

Chii chinonzi PP-H valve?

Unosangana nemhando dzakasiyana dzePP, dzakadai sekuti “PP-H.” Hauzive kuti “-H” inorevei kana kuti chimwe chinhu chaunofanira kunetseka nacho paunenge uchiraira.

Vharuvhu yePP-H inogadzirwa nePolypropylene Homopolymer. Iyi imhando chaiyo yePP yakasimba uye inozivikanwa nekusimba kwayo kwakanaka, kuomarara, uye kushanda kwayo pakupisa kwakanyanya, zvichiita kuti ive yakakodzera mavharuvhu nemafittings emaindasitiri.

Haasi ese ma polypropylene akaenzana. Izwi rekuti "-H" rinomiririra Homopolymer, zvinoreva kuti purasitiki inogadzirwa kubva kurudzi rumwe chete rwe monomer building block (propylene). Izvi zvinoguma nechinhu chakasimba uye chakasimba, izvo chaizvo zvaunoda kune valvu inoda kuva nekumanikidzwa kwakanyanya uye inodzivirira kukotama. Kune mamwe marudzi, senge ma copolymers (PP-B, PP-R), ayo anogadzirwa nekuwedzera imwe monomer. Mamwe marudzi aya anochinjika zvakanyanya kana kuti ane simba rekubata zviri nani patembiricha yakaderera, zvichiita kuti akwanise zvimwe zvinhu, senge mapaipi anoda kukotama. KuPntek, tinosarudza PP-H yemavharuvhu edu eindasitiri nekuti kuomarara kwayo uye kuramba kupisa zvinopa kushanda kwakanakisa uye hupenyu hwebasa hwakareba.

Mhando Dzakajairika dzePolypropylene

Rudzi	Zita rizere	Zvimiro Zvikuru	Nyaya Yakanakisisa Yokushandisa
PP-H	Homopolymer	Kuomarara kwakanyanya, simba, kusimba kwakanyanya pakupisa uye makemikari.	Mavharuvhu, zvigadziko zvemaindasitiri, matangi emakemikari.
PP-B	Copolymer yeBlock	Simba guru rekukanda, kunyanya pakupisa kwakaderera.	Mabhokisi emabhatiri, zvikamu zvemaindasitiri zvinoda kusimba kwesimba.
PP-R	Copolymer isina kurongeka	Yakapfava, inochinjika, inodzivirira kupisa kwenguva refu.	Mapombi emvura inopisa neinotonhora.

Mhedziso

A PP bhora vharuvhuchinhu chakakosha pakubata makemikari zvakachengeteka. Nekunzwisisa hunhu hwayo, miganhu yekumanikidzwa, uye mamakisi akasiyana sePP-H, unogona kusarudza vharuvhu yakakodzera yemabasa anoda mari yakawanda.