Coolant loss valve for engine protective system
An improved coolant loss valve for engine protective systems and the like is described comprising: a valve body having an inlet port, an outlet port and a main valve seat for transmitting fluid between the inlet and outlet ports, the valve body having a recess therein with the valve seat disposed at the end of the recess, a valve housing supported on the valve body, an elastomeric diaphragm sealingly received in the valve housing forming an expansible pressure chamber, a coolant pressure port in the valve housing in fluid communication with the pressure chamber, a piston adjacent the diaphragm, spring means biasing the piston into engagement with the diaphragm for following the movement of the diaphragm, and a small diameter pin slidably received in the housing and fixed at one end to the piston for support thereof.
- Assignee:
- Parker-Hannifin Corp., Cleveland, OH
- Patent Number(s):
- US 4751898
- OSTI ID:
- 6896720
- Country of Publication:
- United States
- Language:
- English
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