RF/RAF Series Gas Safety Bleeding Valve


	2 Application RF series gas safety bleeding valve is applied to gas transmission and distribution system. It will partially discharge to avoid the frequently startup of the shut-off valve because of the elevated back-pressure for non-malfunction problem (downstream valve close fast or temperature change etc.) and to assure nonstop gas supply.


	2 Main Technical Parameters Working pressure rank: RF 0.001～0.02MPa RFH 0.02～0.6MPa Working temperature: -20～60℃ Caliber: DN25, DN50 2 Features ★ Bleeding pressure set easily ★ Tight re-seating close ★ Simple structure and reliable performance 2 Attended mode RF25: Inlet/outlet screwing G1’’ RFH25: Inlet/outlet screwing G1’’ RF50: Inlet/outlet flange DN50 RFH50: Inlet/outlet flange DN50	2 Features ★ Pilot valve with monitor and automatic safety bleeding valve installed in one body ★ Keen operation, fast response and high discharge precision ★ Back-pressure discharge, long-life cycle and reliable operation ★ High re-seating precision, tight close and isometric discharge Applicable media: Natural gas, artificial coal gas, and the liquefied petroleum gas etc. Typical occasion: City gate, district regulation station as well as industry and commerce users. 2 Main Technical Parameters Set pressure(Ps)：1-5kPa, 5-15kPa 15-30kPa, 0.03-0.2MPa, 0.2-0.4MPa, 0.4-0.8MPa, 0.8-1.6MPa, 1.6-2.5MPa, 2.5-4.0MPa, 4.0-6.4MPa Discharge Pressure(Pf): ≤1.04Ps Re-seating Pressure(Ph): ≥0.9Ps Back Pressure: ≤0.5Ps Height: 1/4do (do: diameter) Rated Discharge Coefficient (Kdr): 0.8 Working Temperature:-20℃～60℃ Nominal Pressure: PN0.4, PN0.8, PN1.6, PN2.5, PN4.0, PN6.4 Nominal Diameter: DN25, DN50, DN80, DN100, DN150

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