Nexen Quick Exhaust Valve 945100 - Manual

1
Quick Exhaust Valve
AIR CHAMP PRODUCTS
Product Information Bulletin
The Quick Exhaust Valve provides four functions: Fast Air Exhaust, Contamination Expulsion, Dual
Pressure Shuttle Valve and Check Valve.
Quick Exhaust Valve Benefits:
• Speeds clutch and brake response times by allowing air to exhaust at the air inlet port instead of traveling
back through the control valve.
• Minimizes "overlap" when using a clutch and brake with independent actuating pistons, ensuring brake
torque fully decays before clutch torque rises and vice versa.
• Reduces motor current spike at start-up by increasing the rate of brake torque decay.
• Increases friction facing life by minimizing overlap between clutch-brakes, and motors and brakes.
• Generally allows higher cyclic rates if the clutches or brakes thermal limit allows it.
Condensation/Contamination Expulsion Aid Benefits:
• Allows condensation and other contaminates to be expelled when the control valve is at a higher elevation
than the clutch or bakes air inlet.
• Reduces the possibility of the clutch or brake air chamber developing rust that could interfere with operation
or degrade seals.
Shuttle Valve Benefits:
• If a clutch or brake needs to operate at two air pressures the quick exhaust valve can isolate the two circuits
allowing a high pressure/torque start and a lower running pressure/torque as in a torque limiting application
or spring engaged brakes to operate at less than full torque yet fully release.
Check Valve Benefits:
• If a clutch or brake needs a local reserve air supply in case of a primary air system failure a reservoir with a
check valve on its inlet can isolate it from the primary system allowing time for a controlled shut down.
Quick Exhaust Valve 1/8" Ports
Product No. 945100
Quick Exhaust Valve 1/4" Ports
Product No. 945125
IN
OUT
PRESSURIZED
Diaphragm Position
During Fill
PRESSURIZED
Diaphragm Position
During Fill
IN
OUT
EXHAUST
Diaphragm Position
During Exhaust
IN
OUT
IN
OUT
EXHAUST
Diaphragm Position
During Exhaust