WILLIAMS CONTROLS 111135 WM43B1 Non-Relieving Pressure Regulator

Manufacturer

WILLIAMS CONTROLS

Features & Benefits

• Non-relieving internal design to eliminate "hissing" and conserve air for more critical brake functions
• Adjustable 0–80 PSI output for precise calibration of low-pressure pneumatic shift and clutch systems
• Die-cast zinc alloy housing to provide superior durability against road debris and engine bay heat
• 40 SCFM high-flow capacity to ensure immediate response for air-shifted components under load
• Universal bracket mounting for flexible installation on chassis rails or within control consoles

Williams Controls Pressure Regulator

The Williams Controls Pressure Regulator limits downstream air pressure to protect sensitive accessory circuits like air-shifted transmissions, PTO actuators, and lift-axle controllers. As part of the WM43 series, this Williams Controls 111135 (WM43B1) provides an adjustable output range of 0 to 80 PSI, acting as a failsafe that prevents primary tank pressures (often 120+ PSI) from damaging downstream seals and cylinders. Because it utilizes a non-relieving diaphragm, it maintains its set pressure without exhausting air to the atmosphere, which keeps the cab quiet and preserves your compressor's duty cycle. The rugged zinc-alloy body and 1/4-18 NPTF ports allow for a "set-it-and-forget-it" installation on frame rails or within crowded dashboard consoles.