Pressure balanced mixing valve

Details Pressure balanced mixing valve Pressure balanced mixing valve

1993-05-27

1994-10-18

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

1374546, 13762541, F16K 1106, G05D 1102

Patent

active

053559061

ABSTRACT:
A mixing valve comprising a modular cartridge non-rotatably mounted in a housing. The cartridge includes inlet passages in its bottom portion, outlet passages in its top portion, and a pressure balance valve intermediate and in communication with said inlet and outlet passages. The inlet passages are in communication at their downstream ends with supply ports in the housing. The outlet passages are in communication at their upstream ends with a volume and temperature control valve plate. The volume and temperature control valve plate is rotatable to align or misalign outlet apertures in said plate with the outlet passages in the cartridge. The rotation of the plate is controlled by a stem attached to a handle. Means are provided to adjust the maximum water temperature. The temperature adjustment means include an orienting stem ring having an opening shaped to receive a complementary shaped section of the stem. The orienting stem ring has a splined shaped seat which receives an annular splined section of a hot water stop member. The hot water stop member also has a stop shoulder which, upon rotation, abuts against a stop flange of the housing cap.

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