Thermostatic mixing value

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United States of America Patent

PATENT NO 6820816
SERIAL NO

10311346

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A thermostatic mixing valve (TMV) for operation across a range of flow rates wherein during low pressure operation water enters the TVM (100) into chamber (157) around the circumference of the valve member (150) and cold valve seat (140) and hot water enters into chamber (158), the hot and cold water entering chamber (235) and becoming thoroughly mixed. At low pressure drops, the check valves (230) remain closed so the only pathway the mixed water can follow is through the sensing chamber (125) and the mixed water enters discharge portion (120) to the mixed water outlet (245), the flow path of the hot and cold water shown by pathways (255) and (260), the water becomes thoroughly mixed before entering the sensing chamber (225). For high flow rate operation the water enters and is mixed within the valve as before but in this case the pressure drop across the check valve operates the check valves (230), allowing the mixed water to follow an additional route to the discharge portion (120) and thence to the outlet (245) with additional flow pathway (265) through the valves (230), ensuring accurate temperature sensing.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
HORNE ENGINEERING CO LTD THEPOST OFFICE BOX 7 RANKINE STREET JOHNSTONE RENFREWSHIRE PA5 8BD

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Reid, William Renfrewshire, GB 19 512

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