Kuwongolera Phokoso la Valve nthawi zina mpaka 100 DB kapena kupitilira apo, zomwe zimapangitsa kuti zikhale zovuta kupirira anthu omwe ali pafupi nawo.Phokoso la ma valve olamulira kuchokera ku kugwedezeka kwa spool, pali mpweya wothamanga kwambiri wopangidwa ndi phokoso lamphamvu la mpweya, komanso chifukwa cha kung'anima, cavitation, kutuluka kwa madzi chifukwa cha mphamvu yamadzimadzi ...
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