Piloted Unloader Valves
Conrader Piloted Unloader valves combine a pilot valve and an unloader valve to run an air compressor for continuous operation. This can be used on gas engine or electric motor driven air compressors. Conrader offers two sizes of valves with flow capacities of 20 and 60 SCFM.
In operation, the pilot remains closed until the pressure reaches the unload setting. The pilot then opens and pressurizes the unloader valve. This causes the unloader valve to open and vent the excess air from the compressor to the atmosphere. As the compressed air is used and the pressure drops to the load setting the pilot closes and depressurizes the unloader valve. The unloader valve then closes and the pressure begins to build again and repeats the cycle.
BG Series
BG
Operating Pressure: 20-250 psi
Operating Temperature Range: -15° to 400°F
Max Flow Rating: 20 SCFM
Pilot Inlet: 1/4″ (-4) Male NPT
Pilot Outlet: 1/8″ (-2) Female NPT
Unloader Inlet: 1/4″ or 3/8″ (-4 or -6) Compression Tube or Female NPT
Unloader Outlet: 1/4″ (-4) Female NPT or Vent
Application Type: Gas Engine
BDC Series
BDC
Operating Pressure: 20-250 psi
Operating Temperature Range: -15° to 400°F
Max Flow Rating: 20 SCFM
Pilot Inlet: 1/4″ (-4) Male NPT
Pilot Outlet: 1/8″ (-2) Female NPT
Unloader Inlet: 1/4″ or 3/8″ (-4 or -6) Compression Tube or Female NPT
Unloader Outlet: 1/4″ (-4) Female NPT or Vent
Application Type: Electric Motor
BLG Series
BLG
Operating Pressure: 20-250 psi
Operating Temperature Range: -15° to 400°F
Max Flow Rating: 60 SCFM
Pilot Inlet: 1/4″ (-4) Female NPT
Pilot Outlet: 1/8″ (-2) Female NPT
Unloader Inlet: 1/2″ (-8) Female NPT
Unloader Outlet: 1/2″ (-8) Female NPT
Application Type: Gas Engine
BLDC Series
BLDC
Operating Pressure: 20-250 psi
Operating Temperature Range: -15° to 400°F
Max Flow Rating: 60 SCFM
Pilot Inlet: 1/4″ (-4) Female NPT
Pilot Outlet: 1/8″ (-2) Female NPT
Unloader Inlet: 1/2″ (-8) Female NPT
Unloader Outlet: 1/2″ (-8) Female NPT
Application Type: Electric Motor
Check Valves
Throttle Controls
Pilot Valves
Piloted Unloader Check Valves
Piloted Unloader Valves
Unloader Valves
Custom Engineered solutions
Didn’t find what you’re looking for? We welcome the opportunity to design a valve that fits your exact requirements over a broad range of applications.