Valavu ya mpira imapangidwa kuchokera ku valavu yolumikizira, ili ndi mphamvu yofanana yokweza kuzungulira kwa madigiri 90. Valavu ya mpira imatha kutsekedwa bwino ndi kuzungulira kwa madigiri 90 okha ndi mphamvu yaying'ono. Mphepete mwa valavu yofanana kwathunthu imapereka njira yolunjika yoyendera popanda kukana kwambiri kwa sing'anga.

Mbali yaikulu ya valavu ya mpira ndi kapangidwe kake kakang'ono, kosavuta kugwiritsa ntchito ndi kukonza, koyenera kugwiritsidwa ntchito pazinthu zonse monga madzi, zosungunulira, asidi ndi gasi wachilengedwe, komanso koyenera kugwiritsa ntchito zinthu zomwe zili ndi mikhalidwe yovuta yogwirira ntchito, monga mpweya, hydrogen peroxide, methane ndi ethylene. Thupi la valavu ya mpira likhoza kukhala logwirizana kapena losakanikirana.

Gawo lotseka la valavu ya mpira ndi chozungulira, chomwe ndi mtundu wa valavu momwe chozunguliracho chimazungulira mzere wapakati wa thupi la valavu kuti chitseguke ndi kutseka. Vavu ya mpira imagwiritsidwa ntchito makamaka kudula, kufalitsa ndikusintha njira yoyendera ya cholumikizira mupaipi. Vavu ya mpira ndi mtundu watsopano wa valavu womwe wakhala ukugwiritsidwa ntchito kwambiri m'zaka zaposachedwa. Ili ndi zabwino zambiri, motere:

Ali ndi kukana kotsika kwambiri kwa madzi (kwenikweni 0);
Chifukwa sichidzamira panthawi yogwira ntchito (pamene palibe mafuta odzola), chingagwiritsidwe ntchito m'malo owononga zinthu komanso m'madzi otsika kutentha;
Pakupanikizika kwakukulu ndi kutentha, imatha kutseka kwathunthu;
Imatha kutsegula ndi kutseka mwachangu, ndipo nthawi yotsegulira ndi kutseka ya nyumba zina ndi 0.05 ~ 0.1s yokha kuti iwonetsetse kuti ingagwiritsidwe ntchito mu dongosolo lodziyimira payokha la benchi yoyesera. Mukatsegula ndi kutseka valavu mwachangu, palibe kugwedezeka komwe kukugwira ntchito;
Kutseka kozungulira kumatha kuyikidwa kokha pamalo olowera malire;
Ikatsegulidwa bwino komanso itatsekedwa bwino, pamwamba pa mpira ndi mpando wa valavu zimachotsedwa pa sing'anga, kotero sing'anga yodutsa mu valavu pa liwiro lalikulu sidzayambitsa kuwonongeka kwa pamwamba pa sing'anga;
Ndi kapangidwe kakang'ono komanso kulemera kopepuka, imatha kuonedwa ngati kapangidwe kabwino kwambiri ka valavu yama makina olumikizirana a cryogenic;
Thupi la valavu ndi lofanana, makamaka kapangidwe ka thupi la valavu yolumikizidwa, yomwe imatha kupirira kupsinjika kuchokera pachitsime cha payipi;
Chidutswa chotsekacho chimatha kupirira kusiyana kwa kuthamanga kwambiri chikatsekedwa;

Nortech ndi m'modzi mwa opanga ma valve otsogola ku China omwe ali ndi satifiketi ya ISO9001 yapamwamba.

Zinthu zazikulu:Valavu ya Gulugufe,Valavu ya Mpira,Valavu ya Chipata,Valavu Yowunikira,Globe Vavlve,Zipangizo za Y,Chotsukira Magetsi,Zipangizo zoyezera mpweya (Pneumatic Acurators).