Cooler bypass apparatus and installation kit

摘要

A cooler bypass valve apparatus installed the apparatus between a heat exchanger and conduits coupled to a device carrying fluid that needs to be cooled. A housing includes an inlet port and first and second outlet ports. At least one thermal actuator and at least one valve are mounted in a fluid flow passageway in the housing and operative in response to the fluid temperature to move the at least one valve between operative positions opening and closing fluid flow from the inlet port through the first and second outlet ports between a heat exchanger bypass loop and a heat exchanger cooling loop. In another aspect, two thermal actuators control a separate valve associated with the first and second outlets between open and closed positions enabling fluid flow from the inlet port exclusively through one of the first and second outlet ports or in a combined partial flow through both of the first and second outlet ports.

主权项

1. A bypass valve adapted to be fluidically coupled between a heat exchanger and a device carrying fluid that needs to be cooled, the bypass valve comprising:
a housing having an inlet port and first and second outlet ports in fluid flow communication with a fluid flow passageway in the housing; and first and second valve seats respectively associated with the first and second outlet ports; a valve body disposed in the fluid flow passageway in the housing to control the flow of the fluid in the fluid flow passageway between the inlet port and each of the first and second outlet ports; the valve body carrying a first seal sealingly engageable with the first valve seat and a second seal sealingly engageable with the second valve seat; a return spring acting between the housing and the valve body for normally biasing the valve body to a position wherein the first outlet port is open and the second outlet port is closed to fluid flow; and a temperature responsive actuator, disposed in the housing, and coupled to the valve body to move the valve body to open and to close the first and second outlet ports to fluid flow from the inlet port in response to the temperature of fluid flowing in the fluid flow passageway in the housing.