Need help? We're here!
(888) 312-8812 Login SignupThe 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.
Be the first to review this product!
Be the first to ask a question about this product!
Optional. Please do not use your full name.
Minimum 10 characters, maximum 500 characters
You can upload up to 3 images to help illustrate your question. Supported formats: JPG, PNG, GIF, WebP
Please complete the reCAPTCHA verification to submit your question.
California residents see

