WILLIAMS CONTROLS 402657 WM526

Manufacturer

WILLIAMS CONTROLS

Features & Benefits

• Regulates air pressure for auxiliary pneumatic control circuits
• Precision poppet assembly maintains a stable downstream pressure set point
• Integrated exhaust port prevents pressure buildup in control lines
• Protected adjustment mechanism resists setting changes from vibration

Williams Controls Pressure Regulating Valve

The Williams Controls Pressure Regulating Valve manages pneumatic output to auxiliary systems by balancing supply air against a calibrated internal spring. This Williams Controls WM526 valve is commonly used in control circuits for PTO engagement and transmission shifting where a constant, regulated air supply is required. Inside the die-cast aluminum housing, a precision poppet responds to downstream pressure changes to hold the selected set point. An integrated exhaust port relieves excess air to prevent pressure buildup that can affect sensitive control components. Once set, the protected adjustment mechanism allows the Williams Controls 402657 valve to maintain a steady output pressure so auxiliary systems respond consistently without pressure drift during operation.