| 摘要 |
<p>A pumping trap for returning high temperature condensate under lower presure directly to a boiler under higher pressure. This trap comprises in combination a condensate sump having an inlet and an outlet respectively provided with a check valve, supply and exhaust passages for higher pressure air, gas or the like, a float accomodated in said condensate sump, inlet and outlet check valves as well as pressure operated supply and exhaust valves provided on said passages, and a pilot valve which opens and closes according to rise and fall of said float.</p> |
