McNeilus Hydraulic High Flow Block

McNeilus Hydraulic High Flow Block

The McNeilus Hydraulic High Flow Block is a critical control component located at the front (barrel) end of the Bridgemaster or BridgeKing trailer cylinder on rear discharge mixer trucks. It contains a 70 GPM high-pressure relief valve (HPRV) that relieves pressures over 3,200 PSI to the reservoir, protecting the hydraulic system from pressure spikes if the accumulator is flat. Additionally, it features a pilot-to-shift (PTS) cartridge with a .025 orifice that controls the shifting of the trailer hook cylinder. This block is essential for maintaining safe and controlled operation of the trailer axle system, preventing unintentional lowering or damage during operation.

Key Features

• Houses a 70 GPM high-pressure relief valve (HPRV) set to relieve at 3,200 - 3,300 PSI
• Includes a pilot-to-shift (PTS) valve cartridge with a 0.025-inch internal orifice for controlled shifting
• Mounts directly to the barrel (front) end of the Bridgemaster/BridgeKing trailer cylinder
• Prevents pressure spikes from back-feeding into the main hydraulic system
• Compatible with McNeilus Bridgemaster and Con-Tech BridgeKing trailer axle systems

Fits These Mixers

McNeilus, Con-Tech, CBMW, Kimble. Fits McNeilus Bridgemaster and Con-Tech BridgeKing rear discharge mixer trailer axle systems. Used in the hydraulic control block assemblies for the trailer cylinder.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.