Valve with a control chamber and with controlled closing

Details Valve with a control chamber and with controlled closing Valve with a control chamber and with controlled closing

1992-04-02

1993-03-23

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

13763014, F16K 3902, F16K 31122

Patent

active

051955571

ABSTRACT:
The invention relates to a valve with a control chamber and with controlled closing, especially for hydrocarbon fuel dispensers. In order to avoid abrupt closing of the valve, especially in the case of accidental or abnormal operation of the dispenser, the valve is formed by a first piston, which can cooperate with a fixed seat to block the duct, and a second piston on which the control fluid acts. The first piston is provided with a bore which is closed when the second piston is applied to the first piston. A spring is fitted between the two pistons.

REFERENCES:
patent: 4342328 (1982-08-01), Matta
patent: 4762203 (1987-06-01), Holkeboer
patent: 4978374 (1990-12-01), Janssen et al.

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