Containment valve that allows contamination free transfer

Details Containment valve that allows contamination free transfer Containment valve that allows contamination free transfer

1992-01-29

1992-09-29

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

137614, F16L 3728

Patent

active

051507358

ABSTRACT:
A containment valve with two butterfly valves at the juncture of a first port and a second port with the two valves pivoting on a common transverse axis. The ports may be coupled and uncoupled between a coupled mode and an uncoupled mode. In the uncoupled mode one butterfly valve body locks the first port shut and the other butterfly valve body locks the second port shut to isolate the contents of the ports, such as chemical dust. Each butterfly valve body has a circumferentially moveable annular locking ring moveable between a first position and a second position. In one position the locking ring locks the butterfly valve body shut when the ports are in an uncoupled mode. In the other position the locking rings hold the two ports in the coupled mode. A spring biased pin lock prevents inadvertent rotation of the annular locking ring.

REFERENCES:
patent: 2426471 (1947-08-01), Snyder
patent: 3159180 (1964-12-01), Courtot et al.
patent: 4515182 (1985-05-01), LeDevehat
Muller Drums with Know-How and Service Booklet "1.6.85".
ARAC Project I-7280, Search and Edit Results, Mar. 1985.
Sterile-Sealt Valves, Garlock Valves and Industrial Plastics Booklet, date unknown.
Spectrum Processor, Brochure, date unknown.
Victaulic Brochure, Aug. 1, 1991.
Counter Lock'n Load Brochure, 1990.
Article entitled "Vacuum Transfer/Sieving for Powder Handling", D&CI, Mar., 1985 (McIntire).

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