- safety valve ring
- safety valve spring
- 安全阀: safety valve
- 弹簧: spring; mechanical spring
- 低压安全阀弹簧: low pre ure safety valve ring; low pressure safety valve spring
- 油泵安全阀弹簧: oil pump relief valve spring
- 弹簧安全阀: spring safety valve; spring-loaded relief valve
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