| 弹簧微启式外螺纹安全阀的详细资料： |  |
A21F、A21H-C型弹簧微启式外螺纹安全阀适用于工作温度≤200℃的空气、氨、石油气……等介质的设备或管路上。A21W-P、R型弹簧微启式外螺纹安全阀适用于温度≤200℃有腐蚀性的气体或液体的设备或管路上，作为超压保护装置。KA21Y型弹簧微启式外螺纹安全阀适用于温度≤100℃的液化石油气等。
■弹簧微启式外螺纹安全阀外形尺寸和连接尺寸
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