Direct Acting Relief Valves valvụ enyemaka nrụgide, arụ ọrụ ozugbo, ụdị DBD
Ihe mgbapụta nrụgide nke DBD bụ valves poppet na-arụ ọrụ kpọmkwem. A na-eji ha mee ka nrụgide dị na usoro hydraulic kwụsị. The valves tumadi mejupụtara aka uwe, mmiri. poppet na damping spool (nrụgide nkebi 2.5 ruo 40 MPa) ma ọ bụ bọọlụ (nrụgide ogbo 63 MPa) na mmezi mmewere. Ntọala nke nrụgide usoro na-agbanwe agbanwe na-enweghị njedebe site na nhazi nhazi. Mmiri na-agbanye poppet n'elu oche. A na-ejikọta ọwa P na usoro ahụ. A na-etinye nrụgide dị na usoro ahụ na mpaghara poppet (ma ọ bụ mgbapụta)
Ọ bụrụ na nrụgide dị na ọwa P na-ebili n'elu valvụ setịpụrụ na mmiri, poppet na-emepe megide mmiri. Ugbu a mmiri nrụgide na-agbapụta ọwa P n'ime ọwa T. A na-ejedebe strok nke poppet site na ntụtụ. Iji nọgide na-enwe ntọala nrụgide dị mma n'elu oke nrụgide dum, a na-ekewa nrụgide nrụgide n'ime usoro nrụgide 7. Otu ọkwa nrụgide kwekọrọ na mmiri ụfọdụ maka oke nrụgide arụ ọrụ nke enwere ike ịtọ ya.
