Miller Holding Valve NPT Ports

Miller Holding Valve / Wheel Lift Lock Valve (4,000 PSI) | Part #0301731

Maintain maximum load safety and hydraulic pressure control on your towing equipment with the Genuine Miller Industries Holding Valve (Part #0301731). Rated for up to 4,000 PSI, this load-holding lock valve prevents accidental cylinder drifting, bleed-down, or hydraulic pressure loss during wheel lift, boom elevation, and underlift operations.

Key Features & Benefits

• OEM Quality & Precision: Authentic Miller Industries factory replacement part engineered for seamless compatibility across Miller, Century, Challenger, and Vulcan towing units.

• High-Pressure Load Holding: Rated up to 4,000 PSI to maintain positive hydraulic lock and prevent drift on underlifts, booms, and wheel lift cylinders under heavy payload conditions.

• Standard Pipe Threading (NPT): Features standard NPT threaded ports for reliable, leak-free integration with standard hydraulic lines and fittings.

• Critical Safety Component: Locks hydraulic fluid within the cylinder until deliberate pressure is applied, protecting operators and equipment from accidental lowering or sudden pressure failure.

Specifications

• Brand: Miller Industries

• Part Number: 0301731

• Product Type: Hydraulic Holding Valve / Lock Valve

• Pressure Rating: 4,000 PSI

• Port Connection: Female NPT Pipe Thread

• Applications: Century, Challenger, Vulcan, and Miller Express Wreckers & Car Carriers (Wheel Lift, Underlift, and Boom Elevation Hydraulic Systems)

• Condition: Brand New OEM Replacement