弹簧封闭全启式安全阀供应

弹簧封闭全启式安全阀

弹簧封闭全启式安全阀的开启、关闭动作是依靠其进口端的介质压力变化和弹簧预紧力来使阀芯自动开启及关闭。当介质压力（内压）升高到提升力比弹簧预紧力大时，阀芯克服弹簧预紧力自动开启，泄放多余的介质，使内压下

A42型主要性能规范：Main technical data
型号 type	整定压力范围 MPa Range of Adjusted pressure	密封试验压力 MPa sealing test pressure	排放压力 MPa built-up pressure	回座压力 MPa re-seating pressure	开启高度 mm Value Lift	适用介质 Suitable medium	适用温度 ℃ Suitable temperature	排量系数 coefficient of dischange
A42Y-16C A42Y-25 A42Y-40 A42Y-64 A42Y-100	Ps0.1～0.6 Ps1.3～2.5 Ps1.6～4.0 Ps3.2～6.4 Ps5.0～10.0	Ps<0.3时 Ps-0.03 Ps≥0.03时 90%整定压力	≤1.1 x 整定压力 setting pressure	≥85% 整定压力 setting pressure	≥1/4 喉径 Throat diameter	空气、石油气、无腐蚀性的气体等 Air,petroleum gas,non-corrosiveness gas etc	-29～300	0.7
A42Y-16P A42Y-25P A42Y-40P A42Y-64P A42Y-100P	Ps0.1～0.6 Ps1.3～2.5 Ps1.6～4.0 Ps3.2～6.4 Ps5.0～10.0					弱腐蚀性气体 Weak corrosiveness gas	-40～150
A42Y-16R A42Y-25R A42Y-40R	Ps0.1～0.6 Ps1.3～2.5 Ps1.6～4.0					腐蚀性气体 corrosiveness gas	-40～150

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