force that moves the diaphragm assembly [ ] toward a closed position. upon receiving a pressure rise command, the w-hrv releases pressure from the control chamber. the hydrometer then opens, measuring the flow rate. globe g angle a ( "; dn only) h iso- iso- iso- (iso- / holes) ansi- a jis- j bst-d bd metal...
qn, iso - (nominal flow) % m gpm qper=q (permanent flow) % m gpm globe g angle a o ( "; dn only) h iso- iso- iso- (iso- / holes) ansi- a jis- j bst-d bd metal control accessories r homologation approved l r.s. lit r r.s. gal rg r.s. m r r.s. gal rg r.s. m r r.s. gal rg r.s. lit m r r.s. + gal g r.s....
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