A21F、A21H-16**阀适用于工���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 http://www.ccl-cclair.com/s02/product/2012/02/08/13017401.html