AR51179 | VB60/600 Flow Unloader, 8700 PSI, 16 GPM

AR51179 VB60/600 Unloader | 8700 PSI, 16 GPM Flow-Actuated Ultra High Pressure Valve

The AR51179 is the VB60/600 flow-actuated unloader, a brass-body valve rated 8,700 PSI (600 bar) at up to 16 GPM (60 L/min). It is built for ultra high-pressure systems: when the trigger closes and flow stops, it sends pump flow to bypass so the pump is not dead-headed, and when the trigger opens, full pressure returns.

At 8,700 PSI and 16 GPM it covers the high-flow end of ultra high-pressure work: hydro blasting, surface prep, industrial descaling and heavy coating removal, on pumps like the RTX and RTP series.

Where It Works Best

• Hydro blasting and surface prep rigs
• Industrial descaling and coating removal
• Refinery, shipyard and plant maintenance systems
• Ultra high-pressure pumps up to 16 GPM

Will It Fit My System?

• Pressure: for systems up to 8,700 PSI working pressure.
• Flow: up to 16 GPM. Size the nozzle so the valve regulates smoothly at your pump’s flow.
• Rest of the line: every hose, fitting, trigger control, lance and nozzle must be rated for your working pressure. The AR40400 RL600 trigger control is a matched fit.

Not sure it fits? Text a specialist at (505) 226-6061 with your pump model, pressure and flow and we’ll confirm.

Good to Know

• Set the working pressure with a gauge at the pump outlet, and keep a safety valve in the system.
• Use clean, filtered water. At these pressures, debris damages valve seats fast.

AR51179 Specifications

• Model: AR51179 (VB60/600)
• Max Pressure: 8,700 PSI (600 bar)
• Max Flow: 16 GPM (60 L/min)
• Type: Flow-actuated unloader
• Body: Brass
• Port Size: DN15 (1/2 in. nominal)
• Weight: 4.5 lbs

Shipping: Usually ships via UPS in 1 to 3 days.