Its Fail Safe High or Low will return the output to 3 psig for Direct Acting Mode or to 15 psig for Reverse Acting Mode if the power is lost, regardless of the logic selected.
它的故障安全高或低将返回输出到3直接代理模式PS IG中或15 PS IG中的反向代理模式，如果停电，不管逻辑选择。
Its Fail safe High or Low will return the field reversible output to 3 psig for Direct Acting Mode or to 15 psig for Reverse Acting Mode if the power is lost, regardless of the logic selected.
它的失败安全的高或低将返回外地可逆输出3直接代理模式PS IG中或15 PS IG中的反向代理模式，如果停电，不管逻辑选择。
According to characteristics of chemical industry process of production, this paper details the pneumatic diaphragm valve, s choice on type, acting mode, specific property of flow and diameter size.
本文就气动薄膜调节阀类型、作用方式、流量特性和口径大小的选择，结合化工生产的特点作了较详细地阐述。
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