... and input control single (4-20mA DC or 5V DC) and single-phase power to control the pressure, flow, temperature, and liquid level ... -cast valve2) DN: DN20-200MM3) PN: PN 1.6, 4.0, 6.4 MPa4) Connection way: JB78-59, JB/T 79.2 ... ram core or upper guide single seat sleeve ram core11) Flow characteristics: Equal percentage, linearity and quick opening12) Actuator A) PS ...