Model  : 1151-150、30510-150、EJA-150、E+H-150、ABB、7MF4 series

with the high and low pressure valves and the balance valve within it, mainly used with the use of differential pressure transmitter, when both ends of the high-pressure, low pressure cut off the middle of the balancing valve , positive and negative pressure measurement of transmitter is balanced, when the high and low pressure valve is open, balance valve closed, the positive and negative pressure measurement is the pressure of the pressure points, respectively, the signal that the P1 and P2, when the balance valve open, high, low pressure valve in either a valve is open, and the other a valve is closed, then the two output pressures are P1 or Pz