压力控制的三通阀将信号压力施加到与弹簧力相反的膜片上。当压力信号力大于弹簧力时,其达到设定值(也称为“上”压力),内部机构移动并改变气动状态。信号压力和气动回路彼此完全隔离。气动回路正常关闭,即供气口关闭。而输出口是通过排气口排向大气的。排气口上没有连接。当阀门跳闸时,供气打开到输出端口,排气关闭。排气口上没有连接。阀门将保持这种状态,直到压力信号低于其复位点(也称为“关闭”压力)。“开”压力和“关”压力之间的差异被定义为阀门的差值或滞后。 Factory preset options are available. Please contact your salesperson or distributor for specifications and a custom part number. Adjustments can be made to the switch by removing the round cover and turning the flat head screw. Clockwise adjustments will raise the Set point. Counter clockwise adjustments will lower the setpoint (on pressure). Adjusting preset 3-way valves is not recommended. Do not back out the flat head screw above flush with the body.