发明名称 |
SAFETY RELIEF VALVE HAVING A LOW BLOW-DOWN VALUE AND SPRING THEREFORE |
摘要 |
A safety relief valve is provided that comprises a body comprising a chamber therein and an inlet and an outlet, the inlet comprising an inlet valve seat; a disk member closable on the inlet valve seat; and a mechanism in the body biasing the disk member to rest on the inlet valve seat with a set force such that when the pressure in the inlet exceeds a set pressure resulting from the set force, the disk member is lifted from the inlet valve seat, the mechanism comprising a combination of a coil spring and one or more disk springs stacked in series with the coil spring. A method of preparing a coil spring for use in a pressure relief valve comprises measuring the spring rate of the coil spring and; modifying the spring so as to modify its spring rate to be within ~2% of a desired spring rate.
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申请公布号 |
CA2643223(C) |
申请公布日期 |
2013.03.05 |
申请号 |
CA20032643223 |
申请日期 |
2003.10.29 |
申请人 |
MERCER VALVE COMPANY, INC. |
发明人 |
CHOATE, JEREMY R.;EASTON, MICHAEL J.;TAYLOR, WESLEY L. |
分类号 |
F16K17/04;F16F1/04;F16F1/32;F16F3/00 |
主分类号 |
F16K17/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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