| 摘要 |
PROBLEM TO BE SOLVED: To make a pressure regulator stably regulate pressure while suppressing secondary pressure variation due to a temperature change by a simple means without enlarging the pressure regulator as a whole. SOLUTION: A spacer 21 for receiving the seat surface of a regulation spring 11 on the side of a cover body 3 is formed by a high expansion member having a high coefficient of linear expansion, the spring load of the spring 11 is changed by changing the thickness of the spacer 21 due to temperature change, thereby compensating the change in the lifting quantity of a valve body 17 due to the temperature change to fix secondary pressure.
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