Valve having four connection ports and two positions

Details Valve having four connection ports and two positions Valve having four connection ports and two positions

1995-10-30

1998-05-12

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

91437, 91447, F16K 1106

Patent

active

057493901

ABSTRACT:
A valve includes a distributor with four ports and two positions. In a first position, a first non-return valve allows only circulation of a fluid from the first port toward the third port, while the second port and the fourth port are directly in communication with one another. In a second position, the third port and the fourth port are directly in communication with one another, while a second non-return valve allows only circulation of fluid from the third port and the fourth port in communication toward the first port.

REFERENCES:
patent: 3568707 (1971-03-01), Shore
patent: 4008731 (1977-02-01), Katz
patent: 5452643 (1995-09-01), Smith et al.

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