Self-closing breakaway valve assembly including improved valve m

Details Self-closing breakaway valve assembly including improved valve m Self-closing breakaway valve assembly including improved valve m

1979-02-09

1981-11-24

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

Destructible element

137 75, 13761402, 251288, 251313, F16K 1740

Patent

active

043018238

ABSTRACT:
Improved valve mountings with rotational limiting stops for self-closing breakaway valve assemblies comprising two frangibly connected valve housings each having a rotatable valve member and trigger means holding the valve members open until the valve housings separate. The rotatable valve members have slotted trunnion shafts respectively rotatably received in trunnion bearings mounted to the valve housings. A coil spring is deployed about each trunnion shaft and has one tang end received in the slot of the trunnion shaft to bias the rotatable valve member to its closed position. Indicator shafts keyed with the trunnion shafts are rotatably mounted in the trunnion bearings, the ends of the indicator shafts being exposed to indicate the positions of the valve members. In one embodiment, a key extends from each trunnion shaft or indicator shaft into an arcuate slot in the trunnion bearing, and the keys ground against stop surfaces of the arcuate slots to limit rotation of the valve members beyond their closed positions. In another embodiment, the tang ends of the springs adjacent the trunnion shafts are received in arcuate slots in the trunnion bearings, and the spring tang ends ground against stop surfaces of the arcuate slots to limit rotation of the valve members beyond their closed positions.

REFERENCES:
patent: 3334862 (1967-08-01), Hookway
patent: 3827671 (1974-08-01), Bolden et al.
patent: 3921656 (1975-11-01), Meisenheimer et al.

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