Valavu yodulidwa imagwiritsidwa ntchito makamaka kudula kapena kulumikiza kuyenda kwapakati. kuphatikizama valve pachipata, ma valve a globe, ma valve a diaphragm,ma valve a mpira, ma valve,valavu butterfly, mavavu a pulagi, mavavu a pulagi mpira, mavavu amtundu wa singano, ndi zina.

Ma valve owongolera amagwiritsidwa ntchito makamaka kuti asinthe kuthamanga ndi kuthamanga kwapakati. Kuphatikizira valavu yowongolera, valavu yopumira, valavu yochepetsera kuthamanga, etc.

Ma valve owunika amagwiritsidwa ntchito kuteteza sing'anga kuti isabwererenso. Zimaphatikizapo ma check valves azinthu zosiyanasiyana.

Ma valve a Shunt amagwiritsidwa ntchito kupatukana, kugawa kapena kusakaniza media. Kuphatikiza mitundu yosiyanasiyana ya ma valve ogawa ndi misampha, etc.

Ma valve otetezeka amagwiritsidwa ntchito poteteza chitetezo pamene sing'angayo yapanikizika kwambiri. Kuphatikizapo mitundu yosiyanasiyana ya ma valve otetezera.

Amasankhidwa ndi magawo akuluakulu

(1) Kuikidwa m’gulu la zitsenderezo

Valavu yomwe mphamvu yake yogwirira ntchito imakhala yotsika kuposa kuthamanga kwamlengalenga.

Valavu yotsika kwambiri ndi valavu yomwe kuthamanga kwake kwadzina PN ndi kochepera 1.6MPa.

Kuthamanga kwadzina kwa valve yapakati ndi PN2.5 ~ 6.4MPa.

Valavu yothamanga kwambiri imakhala ndi kuthamanga kwadzina kwa PN10.0 ~ 80.0MPa.

Valavu yothamanga kwambiri ndi valavu yomwe kukakamiza kwake mwadzina PN ndikokulirapo kuposa 100MPa.

(2) Odziwika ndi kutentha kwapakati

Vavu yotentha kwambiri ndi yoposa 450C.

The sing'anga kutentha vavu 120C ndi yochepa kuposa valavu amene t ndi zosakwana 450C.

Normal kutentha vavu -40C ndi zosakwana t zosakwana 120C.

Vavu yotsika kutentha -100C ndi yochepa kuposa t ndi yosakwana -40C.

The valavu yotsika kwambiri kutentha t ndi yosakwana -100C.

(3) Gulu ndi valavu thupi zakuthupi

Mavavu azinthu zopanda zitsulo: monga mavavu a ceramic, mavavu azitsulo zamagalasi, mavavu apulasitiki.

Mavavu azitsulo zachitsulo: monga mavavu amkuwa, mavavu a aluminiyamu, mavavu otsogolera, mavavu a titaniyamu, mavavu a Monel alloy

Mavavu achitsulo otayira, mavavu achitsulo cha kaboni, mavavu achitsulo, mavavu achitsulo otsika, mavavu achitsulo apamwamba.

Mavavu okhala ndi zitsulo zachitsulo: monga ma valve okhala ndi lead, ma valve okhala ndi pulasitiki, ndi ma valve okhala ndi enamel.

General taxonomy

Njira yogawayi imagawidwa molingana ndi mfundo, ntchito ndi kapangidwe kake, ndipo pakali pano ndi njira yomwe imagwiritsidwa ntchito kwambiri padziko lonse lapansi komanso yapanyumba. Chipata chachikulu, valavu yapadziko lonse lapansi, valavu yamagetsi, valavu yachitsulo, valavu ya plunger, valavu ya diaphragm, valavu ya pulagi, valavu yamagulugufe, valavu yoyang'ana, valavu yochepetsera mphamvu, valavu yotetezera, msampha, valavu yoyendetsa, valavu ya phazi, fyuluta, valve yochepetsera , ndi zina.