Relief valve

Details Relief valve Relief valve

1984-04-27

1985-10-01

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137522, 137843, 251 86, 251334, F16K 1704

Patent

active

045439877

ABSTRACT:
A relief valve (10) incorporating a poppet assembly (14) having a metallic sealing disc (46) in engagement with an annular valve seat (34). The disc is acted on by a ball (44) received within a recess formed in the end of the poppet stem (36). The disc and the ball are retained in free-floating relationship with the stem by means of a cylindrical retainer (40), which allows the ball to center itself over the disc and valve seat and thus effectively apply the closing force at a point at the center of the disc. The point application of the closing force causes the disc to flex a finite amount, which causes the disc to contact the inner edge only of the annular valve seat, thus approximating an ideal knife-edge engagement between the valve seal and the seat.

REFERENCES:
patent: 1476383 (1923-12-01), Twardowsky
patent: 1763927 (1930-06-01), Ireland
patent: 1934314 (1933-11-01), Lawler
patent: 2740425 (1956-04-01), Garland
patent: 3733048 (1973-05-01), Hiszpansky
patent: 4327767 (1982-05-01), Fehrenbach

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