Back-pressure-resistant vapor trap for condensate discharge

Details Back-pressure-resistant vapor trap for condensate discharge Back-pressure-resistant vapor trap for condensate discharge

1975-07-07

1977-03-22

Weakley, Harold W.

Automatic temperature and humidity regulation

Traps

Thermostatic

137183, 236 99R, F16T 104

Patent

active

040132200

ABSTRACT:
In addition to a deformable disk membrane with a valve seat on a portion of a flange immediately surrounding a discharge opening, there is provided a similarly deformable annular disk membrane on a valve seat surrounding that of the disk membrane set back into the flange surface by at least the thickness of the annular disk membrane somewhat obliquely to form a wedge-shaped flow channel communicating with the inlet opening for the working medium. The two membranes are clamped together at their outer edges with an O-ring and a cap providing the chamber for the control medium. The annular membrane operates as a built-in check valve when back pressure of the condensate pushes the disk membrane off its seat, the annular membrane remaining on its seat and blocking the inlet opening against backflow.

REFERENCES:
patent: 208520 (1878-10-01), Hawes
patent: 1220985 (1917-03-01), Harter
patent: 3083943 (1963-04-01), Stewart et al.
patent: 3386468 (1969-06-01), Dickinson et al.
patent: 3531079 (1970-09-01), Greene

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