Term
Liquid Expansion Thermostatic Valve
Principle |
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Definition
| Liquid when heated expands. |
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Term
Liquid Expansion Thermostatic Valve
Construction |
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Definition
Liquid is contained in a copper PHIAL
Connected to flexible metal BELLOWS
by a CAPILLARY TUBE |
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Term
Liquid Expansion Thermostatic Valve
Operation |
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Definition
The gas valve is attached to the BELLOWS.
When temp increases the bellows expand pushing the valve onto its seat.
This stops the gas flow to the burner via that route |
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Term
Liquid Expansion Thermostatic Valve
Operation of By pass screw |
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Definition
BY pass screw allows a small flow rate to the burner.
so when temp is reached it is not extinguished.
By pass rate is designed to maintain desired temp. |
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Term
Liquid Expansion Thermostatic Valve
Disc on seat valve |
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Definition
Disc is assisted onto its seat by a spring.
If temp falls liquid contracts
Bellows contract pulling valve away from seat.
This restores main gas rate to burner |
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Term
Liquid Expansion Thermostatic Valve
Temperature Adjustment |
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Definition
achieved by temp adjustment bar when turned will move valve closer or further from its seat.
Results in a lower or higher temp before by pass rate is acheived |
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Term
Liquid Expansion Thermostatic Valve
Appliances |
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Definition
Most commonly found on
GAS COOKER OVENS |
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