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A21F/H-16CA21F/H-25CA21F/H-40C spring full open type external thread safety valve DN40

price:USD$398.00
discount 70% in 2018-09-23 to 2018-09-25
price: USD$ 278.60
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Type A21H is suitable for the work temperature are less than 200 of the water, air, steam and other media of the equipment or pipeline; A27Y is suitable for the work temperature are less than 200 corrosion of the equipment or pipeline, as the overpressure protection device. A28H (Y) model is applied to the working temperature of less than 200 DEG C air, steam, water, nitrogen and hydrogen mixed gas medium of the equipment or pipeline; A28Y-P/R is suitable for the working temperature is 200 DEG C corrosion of the equipment or pipeline, as the overpressure protection device.