OHL yakavambwa muna 1867 uye parizvino ndeimwe yevanotungamira kugadzira mavharuvhu eindasitiri muGermany. Zvese zvigadzirwa zvinogadzirwa kuGermany uye zvinogadzirwa zvichinyatsoenderana neEU uye nedzimwe nyika.
Zvigadzirwa zvinosanganisira katatu eccentric butterfly mavharuvhu, elastic chigaro butterfly mavharuvhu, pakati butterfly mavharuvhu uye zvichingodaro. Inoshandiswa zvakanyanya muindasitiri yemakemikari, simba rezuva, kuvaka ngarava, kurapwa kwemvura, indasitiri yemapepa uye zvichingodaro.

Yakavambwa muna 1872, VAG ikambani yevharuvhu iri muGermany. VAG ine vashandi ve1,100 pasi rese, vachipa masevhisi evharuvhu anokurumidza uye ari nyore kune vatengi vanobva pasirese.
VAG yakazvipira kupa zvigadziriso zvechizvino-zvino zvekugadzirisa madhamu, zvidyarwa zvemvura, uye network yekupa mvura yekunwa.
Zvigadzirwa zvinosanganisira Double-offset butterfly mavharuvhu, Centric butterfly vharafu uye zvichingodaro.

Parker ave nemakore anopfuura zana uye anga achipa huwandu hwakazara hwemhinduro dzekurapa kwemvura kune vatengi vepasi rose veindasitiri kana vekutengesa kubatsira vatengi kugadzirisa matambudziko avo.
Parker inotungamirwa nevatengi uye inopa akasiyana magadzirirwo emavharuvhu eshavishavi kuti asangane nezvinodiwa nevatengi. Pamusoro pemavharuvhu eshavishavi, Parker inopawo zvakasiyana-siyana zvemaindasitiri zvekushandisa iwe kuti usarudze kubva. Parker mutengesi akavimbika.

Burgmer yakavambwa muna 1967 uye inotungamirwa kuGermany, inobata mukugadzira mavharuvhu e butterfly. Mavharuvhu ese anogadzirwa zvinoenderana ne ISO9001:2018 zviyero. Ipa emhando yepamusoro mavharuvhu evhavha kune vatengi vemaindasitiri. Kushandira indasitiri yekurapa mvura, indasitiri yekuvaka ngarava, indasitiri yepulp, indasitiri yekugadzira magetsi, nezvimwe.

Yakavambwa muna 1966, BK Armaturen yakazvipira kupa vatengi zvemhando yepamusoro zvigadzirwa uye nekukurumidza kuburitsa masevhisi. Panguva imwecheteyo, BK ndeyekushandisa-yakatarisana uye yakagadziridzwa mavharuvhu kuti ipe vatengi vane yakanyatsoenderana maitiro ekudzora mhinduro.
Zvigadzirwa zvinosanganisira eccentric butterfly mavharuvhu, concentric butterfly mavharuvhu, PTFE lined butterfly mavharuvhu uye zvichingodaro.