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4023 3-Way Pressure Sensing Valve

SKU 4023

AMOT Model 4023 3-Way Pressure Sensing Valve can be used as a 2 or 3-Way capacity, pressure sensing valve. This valve is ideal for applications that require compressor suction and discharge pressure sensing at high pressure levels. Dual purpose construction provides a wide latitude of applications and permits easy field adjustment or changeover from trip on falling to trip on rising pressure by changing the port piping and re-adjusting the setting. Trip settings are adjustable in eight ranges from 1.2 bar (18 psi) falling to 524 bar (7600 psi) rising pressure. 

Features and Benefits

  • Settings to 524 bar (7600 psi)
  • 2 or 3-Way Action
  • Balanced 3-Way Valve
  • Pressure Can Be Applied To Any Port
  • 3-Way Valve Suitable For LP Gas, Natural Gas, Oil, Air, Etc.
  • Bubble-Tight Seals with Center Dead Spot (No Port Overlap)
  • Field Adjustable – Rising or Falling
  • Gulfproofed Finish Standard
  • Adjustable Setpoint
Housings: Anodized aluminum  
Piston and cylinder: Stainless steel
3-way valve spool: Anodized aluminum  
Standard seals and diaphragm: Buna N/Nitrile
Piston seal: Teflon  
Max. operation pressure at ports 
1,2 and 3:
8.6 bar 125 psi
Max. temperature: 66°C 150°F
Valve free flow area (9/16 dia. port): Kv = 1.0 Cv = 1.2
  • Well Head Control

  • Actuator Piloting Valve Actuator

  • Suction/ Discharge Pressure

The 4023 valve is suitable for use on air, hydraulic, or gas control systems with control system pressure up to 8.6 bar (125 psi). The 3-Way valve has a pressure-actuated, spring return operator. Without pressure applied to the sensed pressure port, Port 3 is open to Port 2. With pressure applied to the sensed pressure port, Port 3 closes before Port 1 opens to Port 2.
A small dead spot on the center of the stroke prevents valve port overlap. The valve is normally set at the factory so that Port 1 just opens to Port 2 on a pressure rise to the specified tripping pressure setting. The valve is converted to 2-Way action by plugging Port 1 or Port 3.