Piston-type flush valve having a triple filtered bypass

Details Piston-type flush valve having a triple filtered bypass Piston-type flush valve having a triple filtered bypass

E - Fixed Constructions

03

D

E03D 1/30 (2006.01) E03D 3/04 (2006.01) F16K 21/06 (2006.01) F16K 31/383 (2006.01)

Patent

CA 2353324

A flush valve for use with urinals or water closets includes a hollow valve body having an inlet, an outlet, and a valve seat therebetween. There is a piston assembly movable in the hollow valve body to a closing position on the valve seat to control flow through the valve. A pressure chamber is above the piston assembly for holding it on the valve seat. There is a bypass passage to the piston assembly to connect the inlet with the pressure chamber to provide fluid to move the piston assembly to the closing position. The bypass passage includes a filter and an orifice, with the filter including multiple filters in series between the inlet and the bypass.

Un robinet de fond de cuve utilisable avec des urinoirs ou des toilettes comprend un corps de robinet creux pourvu d'un orifice d'entrée, d'un orifice de sortie et d'un siège entre les deux. Un ensemble à piston, déplaçable dans le corps de robinet creux jusqu'à une position d'obturation sur le siège, commande le débit à travers le robinet. Une chambre de refoulement, au dessus de l'ensemble à piston, raccorde l'orifice d'entrée à la chambre de refoulement, pour que le liquide produise le déplacement de l'ensemble à piston jusqu'à la position d'obturation. Le passage en dérivation comprend de multiples filtres en série entre l'orifice d'entrée et la dérivation.

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