The valves maximum capacity is measured by the working pressure on the suction wire and the pump speed.

Product Name: Four-Valve1.      The valve’s maximum capacity is measured by the working pressure on the suction wire and the pump speed, while the minimum capacity should be restrained.2.      Permeation through the valve seat is measured under heat-resisting temperature of 70'C and air pressure difference 1.03 MPa.3.      Weight of the valve (not including the LB coil): 125g.4.      Valve heat-resisting temperature: 120'C