F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/62
F16K 15/00 (2006.01) F16K 15/02 (2006.01) F16K 47/00 (2006.01)
Patent
CA 1183061
A b s t r a c t The non-return valve comprises a housing (2) provided with an outlet connection (4), an inlet connection (3) and, opposite the latter, a coaxial installation opening (5). An insert (10) is secured in the latter, which is closed by a cover (7), and together with the latter defines a chamber disposed coaxially of the inlet connection (3). A piston (25) is arranged for displacement in this chamber and divides the chamber into two cylindrical chambers (15, 15') and has one end of a valve spindle (22) secured to it. At the other end of the valve spindle (22) is a valve plate (50) co-operating with a valve seat (53) provided in he housing (2) near the inlet connection (3). Connecting ducts (55; 31, 32) lead from each of the two cylinder chambers (15, 15') to the housing chamber on the outlet side. A damping member (27) is provided on the movable system consisting of the piston (25), valve spindle (22) and valve plate (50) and when the valve closes enters the duct (32) with a throttling action but frees it when the valve opens. Shock-like closure of the non-return valve is thus obviated in a constructionally simple and operationally reliable manner.
403463
Gowling Lafleur Henderson Llp
Sulzer Brothers Limited
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