A21F、A21H、A21W、A21Y弹簧**阀 弹簧微启式外螺纹**阀 A21H-16C-DN10, A21H-16C-DN15， A21H-16C-DN2 A21F、A21H、A21W、A21Y弹簧**阀 弹簧微启式外螺纹**阀 A21H-16C-DN10

A21F、A21H、A21W、A21Y弹簧**阀 弹簧微启式外螺纹**阀 A21H-16C-DN10, A21H-16C-DN15， A21H-16C-DN20 A21H-16C-DN25 A21H-16C-DN32 A21H-16C-DN40

A21F、A21H-16**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型适

用于温度≤100℃的液化石油气等。

A21F、A21H、A21W、A21Y弹簧**阀

弹簧微启式外螺纹**阀
A21H-16C-DN10,
A21H-16C-DN15，
A21H-16C-DN20
A21H-16C-DN25
A21H-16C-DN32
A21H-16C-DN40
A21H-16C-DN50
A21H-25-DN10
A21H-25-DN15
A21H-25-DN20
A21H-25-DN25
A21H-25-DN32
A21H-25-DN40
A21H-25-DN50
A21H-40-DN10
A21H-40-DN15
A21H-40-DN20
A21H-40-DN25
A21H-40-DN32
A21H-40-DN40
A21H-40-DN50

A21H-64C-DN10
A21H-64C-DN15
A21H-64C-DN20
A21H-64C-DN25

A21H-100-DN10
A21H-100-DN15
A21H-100-DN20
A21H-100-DN25

A21H-160-DN10
A21H-160-DN15
A21H-160-DN20
A21H-160-DN25

A21H-320-DN10
A21H-320-DN15
A21H-320-DN20
A21H-320-DN25
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