Valves and valve actuation – With means for blocking or disabling actuator – Latch manipulator mounted on valve body
Patent
1998-02-20
1999-08-03
Chambers, A. Michael
Valves and valve actuation
With means for blocking or disabling actuator
Latch manipulator mounted on valve body
251144, 251248, 251294, 137797, F16K 336
Patent
active
059314443
ABSTRACT:
A valve assembly for a tank having an opening. The valve assembly includes a body assembly mounted to the tank opening. The body assembly has a valve seat and a valve throughbore. A valve disk coacts with the valve seat for opening and closing the valve throughbore. A locking lug is attached to the valve disk. The locking lug has a locking portion for receiving a safety lock pin mounted in the body assembly. The safety lock pin has a locked position and an unlocked position. The safety lock pin is received in the locking portion of the locking lug to lock the valve disk in the locked position, and the safety lock pin is withdrawn from the locking portion in the unlocked position. A valve operator is in releasable contact with the valve disk. The valve operator forces the valve disk away from the valve seat to open the valve throughbore. The body assembly includes a first member and a second member and the lock pin is mounted in the first member. A shear plane is formed between the first and second members such that the second member may be sheared from the first member at the shear plane without affecting the integrity of the lock pin in the locked position.
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