Varuvhu chinhu kana chinhu chakasikwa chinogadzirisa, kutungamira kana kudzora mafambiro emvura (magasi, zvinwiwa, zvakaonda, kana slurries) nekuvhura, kuvhara, kana kuvhara zvishoma nzira dzakasiyana siyana. Mavharuvhu ari tekinoroji fittings, asi anowanzo kukurukurwa sechikamu chakasiyana. Muvharuvhu yakashama, mvura inoyerera ichienda kune imwe nzira kubva pakakwirira kusvika kune yakaderera. Izwi iri rinotorwa kubva kuLatin valva, chikamu chinofamba chegonhi, kubva kune volvere, kutendeuka, roll.

Iyo yakapfava, uye yechinyakare, vharuvhu ingori yakasununguka yakanyungudutswa tambo inodzika pasi kuti ivhare mvura (gasi kana mvura) inoyerera ichienda kune imwe nzira, asi inosundirwa kumusoro nekuyerera kwayo pachayo kana kuyerera kuri kufamba kune rimwe divi. Izvi zvinonzi cheki valve, sezvo ichidzivirira kana "kutarisa" kuyerera mune imwe nzira. Mazuva ano mavharuvhu ekudzora anogona kudzora kudzvanywa kana kuyerera kudzika uye kushanda pane dzakaomesesa otomatiki masisitimu.

Mavharuvhu ane akawanda mashandisirwo, anosanganisira kudzora mvura yekudiridza, maindasitiri ekushandisa kudzora maitiro, mashandisirwo emudzimba senge on/off and pressure control kumadhishi newacha mbatya nemapombi mumba. Kunyangwe magaba ekupfapfaidza aerosol ane kavharuvhu kadiki kakavakirwa mukati. Mavharuvhu anoshandiswawo muchikamu chemauto uye chekutakura. MuHVAC ductwork uye mamwe ari pedyo-yemhepo inoyerera, mavharuvhu anodaidzwa kunzi madhamu. In compressed air systems, zvisinei, mavharuvhu anoshandiswa ane akajairika mhando ari bhora mavharuvhu.
Applications

Mavharuvhu anowanikwa mune angangoita ese maindasitiri maitirwo, anosanganisira emvura netsvina, migodhi, kugadzirwa kwemagetsi, kugadzira oiri, gasi nepetroleum, kugadzira chikafu, kugadzirwa kwemakemikari nemapurasitiki nemimwe minda yakawanda.

Vanhu vari munyika dzakabudirira vanoshandisa mavharuvhu muupenyu hwavo hwezuva nezuva, anosanganisira mavharuvhu epombi, akadai sepombi dzemvura yomupombi, mavharuvhu anodzora gasi pazvibiki, mavharuvhu maduku akaiswa kumichina yokuwachisa uye yokugezesa ndiro, midziyo yokudzivirira inoiswa mugadziriro dzemvura inopisa, uye mavharuvhu epopu mumotokari. injini.

Muzvisikwa kune mavharuvhu, semuenzaniso mavharuvhu enzira imwe mutsinga anodzora kutenderera kweropa, uye mavharuvhu emwoyo anodzora kuyerera kweropa mumakamuri emoyo uye kuchengetedza kupuruzira kwakaringana chiito.

Mavharuvhu anogona kushandiswa nemaoko, kungave nemubato, lever, pedal kana vhiri. Mavharuvhu anogona zvakare kuve otomatiki, achifambiswa nekuchinja mukumanikidza, tembiricha, kana kuyerera. Shanduko idzi dzinogona kuita pa diaphragm kana piston iyo inobatidza vharafu, mienzaniso yerudzi urwu rwevharuvhu inowanikwa kazhinji mavharuvhu ekuchengetedza akaiswa kune inopisa mvura masisitimu kana boilers.

Zvimwe zvakaoma kudzora masisitimu anoshandisa mavharuvhu anoda otomatiki kudzora kwakavakirwa pane yekunze yekupinza (kureva, kudzora kuyerera kuburikidza nepombi kuenda kunochinja set point) inoda actuator. An actuator icharova vharafu zvichienderana nekupinza kwayo uye kuseta-up, ichibvumira vharafu kuti iiswe nenzira kwayo, uye ichibvumira kutonga pane zvakasiyana-siyana zvinodiwa.
Variation

Mavharuvhu anosiyana zvakanyanya muchimiro uye mashandisirwo. Saizi[zvisina kujeka] zvinowanzobva pa 0.1 mm kusvika pa 60 cm. Mavharuvhu akakosha anogona kuva nedhayamita inodarika mamita mashanu [ndeipi?]

Mari yevharuvhu inotangira kubva kumavharuvhu asingadhure anoraswa kuenda kumavharuvhu akasarudzika ayo anodhura zviuru zvemadhora ekuUS painch yedhayamita yevharuvhu.

Mavharuvhu anoraswa anogona kuwanikwa muzvinhu zvakajairika zvemumba zvinosanganisira mini-pombi madhishi uye magaba aerosol.

Kushandiswa kwakajairwa kweizwi vharafu kunoreva mavharuvhu anowanikwa muhuwandu hwemazuva ano emagetsi emagetsi emukati akadai seaya ari mumotokari zhinji dzinofambiswa nemafuta anoshandiswa kudzora kupinza kwemafuta-mweya musanganiswa uye kubvumidza kubuda kwegasi.
Types

Mavharuvhu akasiyana chaizvo uye anogona kuiswa muhuwandu hwemhando dzemhando. Mavharuvhu anogona zvakare kurongwa nemabatirwo aanoitwa:

Hydraulic
Pneumatic
Manual
Solenoid valve
Motor