Enerpac CH-604 Hose Half Hydraulic Coupler 3/8" NPT Male 10,000 PSI

The Enerpac CH-604 is the standard male coupler half for the C-Series high-flow hydraulic coupler system, used on most Enerpac pumps and cylinders rated to 10,000 psi (700 bar). The 3/8-inch NPTF male thread enables direct connection to Enerpac hydraulic hoses and tooling without adapters, and the high-flow design supports up to 2,500 in³/min (35 l/min) to minimize pressure loss during cylinder operations.

Each CH-604 ships with a 2-in-1 dust cap that fits both male and female coupler halves, protecting the hydraulic connection from contamination during storage and transport. The CH-604 pairs with the CR-400 female coupler (standard-equipped on RC, RCH, RSM, and many other Enerpac cylinders) to form a complete, rated connection.

Best For:

- Connecting Enerpac hydraulic hoses to RC, RCH, RSM, and P-series cylinders and pumps

- Replacing lost or worn male coupler halves in existing Enerpac hydraulic setups

- Field service and maintenance kits requiring spare 3/8 NPTF male couplers

- Any 10,000 psi hydraulic system using Enerpac C-Series coupler standards

- Applications requiring fast, repeated hose connect/disconnect cycles

Key Features:

- 3/8 NPTF male thread: standard port connection for Enerpac pumps, cylinders, and hydraulic hoses throughout the 10,000 psi tooling range

- High-flow design: 2,500 in³/min (35 l/min) maximum flow capacity reduces pressure drop during cylinder advance and retract

- 10,000 psi (700 bar) rated: compatible with full Enerpac system operating pressure

- C-Series standard: OEM-spec coupler used on most Enerpac cylinders and pumps as factory standard equipment

- 2-in-1 dust cap: single cap protects both male and female coupler halves — included with each CH-604

Quick Specs:

- Max Operating Pressure: 10,000 psi (700 bar)

- Max Flow Capacity: 2,500 in³/min (35 l/min)

- Thread: 3/8 NPTF male

- Anatomy: Male half (hose side)

- Length (Dimension A): 3.26 in (83 mm)

- Body Diameter (Dimension D): 1.38 in (35 mm)

What's Included:

- Enerpac CH-604 male coupler half with 2-in-1 dust cap