Automatic switchover valve and system utilizing same

Details Automatic switchover valve and system utilizing same Automatic switchover valve and system utilizing same

1975-09-10

1977-04-19

Cline, William R.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137102, F16K 1107, G05D 1100

Patent

active

040182444

ABSTRACT:
An automatic switchover valve is described having a unique venting system whereby any areas which may cause a buildup in pressure during shuttling are normally vented to atmosphere. The shuttle is of a simple, easy to manufacture design having a central inwardly tapered portion which allows communication with internal parts of the valve to atmosphere. The valve also features sealing means which seal against moving surfaces without being subjected to rubbing on sharp surfaces or orifices, thus prolonging seal life.

REFERENCES:
patent: 2300694 (1942-11-01), Overbeke
patent: 2440478 (1948-04-01), Kehle
patent: 2641273 (1953-06-01), Siebens
patent: 3628556 (1971-12-01), Bachman
patent: 3633606 (1972-01-01), Hay et al.

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