DYC-Q series low vacuum electro-magnetic pressure difference valve is a new vacuum valve which has been installed in the gas inlet of the mechanical pump. The working principle is the valve and pump should be connected in the same power . When the pump stops working or power supply is suddenly interrupted, the valve will depend on atmospheric and vacuum pressure on making the valve plate closes automatically, will be closed vacuum system to maintain their vacuum, and the atmosphere through the throttle valve into the pump chamber in order to avoid pump oil return to vacuum system. In this way, it protects the vacuum system and is beneficial for the re-starting of mechanical pump.

The applicable active medium of this valve are air, non-corrosive gas.

Main technical performance:

Scope (Pa) 105～102 Valve Leakage Rate(Pa.L/S) ＜6.5x10-2 Medium temperature (℃) -25～+40 Time for opening and closing the valve (S) ≤3 Rated voltage (V/Hz) 220/50 Installation  Vertical

(Picture one)(KF)Outline dimension and connection size (GB4982) Model Nominal Diameter (DN) ΦW ΦD ΦB H L Flange standard DYC-Q16/KF 16 60 30 17.2 115 63 GB4982 DYC-Q25/KF 25 70 40 26.2 130 67 DYC-Q40/KF 40 100 55 41.2 160 81 DYC-Q50/KF 50 110 75 52.2 195 85 /

Connection and outline dimension (GB/T6070) Model Nominal Diameter (DN) ΦD ΦB H L n-d Flange standard DYC-Q16 16 60 45 75 63 4-M6 GB/T6070 DYC-Q20 20 65 50 80 67 DYC-Q25 25 70 55 90 67 DYC-Q32 32 90 70 100 75 4-M8 DYC-Q40 40 100 80 110 81 DYC-Q50 50 110 90 123 85 DYC-Q65 65 125 105 147 95 DYC-Q80 80 145 125 147 102 DYC-Q100 100 165 145 140 112 8-M8 DYC-Q125 125 200 175 185 121 8-M10 DYC-Q160 160 225 200 210 138 DYC-Q200 200 285 260 240 170 12-M10 DYC-Q250 250 335 310 285 195 DYC-Q320 320 425 395 310 241 12-M12