Emergency shut down device

Details Emergency shut down device Emergency shut down device

1975-11-07

1984-01-03

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

92 5R, 92130A, 92130C, 137556, 251 636, F16K 4300, F16K 3700, F16K 31122

Patent

active

044237480

ABSTRACT:
An emergency shut down device for a gate valve utilizes a pre-assembled spring cartridge assembly which includes a container and a compression spring pre-loaded therein. Suitable openings are provided in the end plates of the cartridge to permit the remaining components, including a ram cup, a piston and cylinder arrangement, a base mounting member and a stem for connection to the valve gate, to be assembled within the cartridge without fear of a spring-initiated explosion of parts as the spring is safely contained within the container before final assembly begins. The device is operable to rapidly close a gate valve when there is a loss of fluid pressure within the device.

REFERENCES:
patent: 3028878 (1962-04-01), Natho
patent: 3086745 (1963-04-01), Natho
patent: 3196618 (1965-07-01), Farmery et al.
patent: 3209772 (1965-10-01), Atkinson et al.
patent: 3379405 (1968-04-01), Natho
patent: 3824901 (1974-07-01), Shafer
patent: 3858488 (1975-01-01), Newstead et al.

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