Product Description: VRD Series • Tow-Shift adjustable gas ballast valve satisfies different requirements of condensable vapor (such as water vapor) to be exhausted out of pump in different processes. • Dual protection of oil anti-sucking back ensures vacuum system from oil pollution when pump stops running and needs to be easily restarted. • Forced oil circulation system consisted of oil pump and constant pressure oil supply mechanism ensures stable running of the pump. • Less components are used, easy to maintain and repair.
Model: VRD 4 Displacement Speed m³/h (50Hz): 4(1.1) Hz Displacement Speed m³/h (60Hz): 4.8(1.3) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 5x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 5x10⁻¹ Pa
Model: VRD 6 Displacement Speed m³/h (50Hz): 6(1.7) Hz Displacement Speed m³/h (60Hz): 7.2(2) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 5x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 5x10⁻¹ Pa
Model: VRD 8 Displacement Speed m³/h (50Hz): 8(2.2) Hz Displacement Speed m³/h (60Hz): 9.6(2.6) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 5x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 5x10⁻¹ Pa
Model: VRD 16 Displacement Speed m³/h (50Hz): 16(4.4) Hz Displacement Speed m³/h (60Hz): 19.2(5.2) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 4x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 4x10⁻¹ Pa
Model: VRD 24 Displacement Speed m³/h (50Hz): 24(6.6) Hz Displacement Speed m³/h (60Hz): 19.2(5.2) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 4x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 4x10⁻¹ v Pa
Model: VRD 30 Displacement Speed m³/h (50Hz): 30(8.3) Hz Displacement Speed m³/h (60Hz): 36(9.9) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 4x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 4x10⁻¹ Pa
Model: VRD 48 Displacement Speed m³/h (50Hz): 48(13.3) Hz Displacement Speed m³/h (60Hz): 57.6(16) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 4x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 4x10⁻¹ Pa
Model: VRD 65 Displacement Speed m³/h (50Hz): 65(18) Hz Displacement Speed m³/h (60Hz): 57.6(16) Hz Ultimate Partial Pressure Gas Ballast Close (Pa): 4x10⁻² Pa Ultimate Total Pressure Gas Ballast Close (Pa): 4x10⁻¹ Pa