Non-return valves

Details Non-return valves Non-return valves

1980-10-24

1982-11-09

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137850, F16K 1514

Patent

active

043579582

ABSTRACT:
A non-return valve comprises a valve body 1 which supports the upstream end of a valve closure means 2 formed by a sleeve of flexible but impermeable material. Closure support means 3 of a skeletal structure are positioned within the valve closure means 2. Forward flow through the valve is relatively unimpeded, but reverse flow causes the valve closure means 2 substantially sealingly to collapse upon the closure support means 3. In one of the principal applications of this non-return valve, the valve body 1 is the efflux duct of a fan.

REFERENCES:
patent: 2369170 (1945-02-01), Motsinger
patent: 2897835 (1959-08-01), Philippe
patent: 3342208 (1967-09-01), Steffes
patent: 4217921 (1980-08-01), Gidnel

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