A21F, A21H spring micro-open type external thread safety valve is suitable for working temperature ≤200℃ air, ammonia, LPG...... Such as medium equipment or pipeline. A21w-p, R stainless steel spring micro-open external thread safety valve is suitable for corrosive gas or liquid temperature ≤200℃ equipment or pipeline, as overpressure protection device. KA21Y spring micro-open external thread antisulfur safety valve is suitable for LPG temperature ≤100℃.
Scope of use: the product can be used in petroleum, chemical, electric power and other industries.
The product conforms to standard: ASME Ⅷ, API 527.

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主要性能参数

型号	公称压力PN	适用温度/°C	适用介质
A21H/F-16C~40	10~40	≤200	液体、空气
A21W/F-16P~40P	10~40	≤200	弱腐蚀性液体、气体
A21W/F-16R~40R	10~40	≤200	腐蚀性液体、气体

主要外形尺寸

                                                          （单位：mm）

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