VRT3-310 | 4500 PSI 27M Unloader Valve Black Spring Duty Valve

VRT3-310 Unloader Valve – 310 Bar (4,500 PSI) High-Pressure Regulator

The VRT3-310 unloader valve is a heavy-duty VRT3-series regulator engineered for consistent control at
310 bar (approximately 4,500 PSI) with flows up to 10.5 GPM. Tuned with a black high-pressure spring,
it automatically diverts water to bypass the instant the trigger is released—protecting pumps, hoses, guns, and
downstream accessories from damaging spikes. The reinforced body and spring architecture ensure long service life
in contractor rigs, industrial plants, and high-duty wash stations.

What This Means for Your Rig

If you run higher pressures or longer hose runs, the unloader becomes the backbone of performance and safety.
The VRT3-310’s black-spring class provides stable high-pressure control for turbo nozzles and demanding tools,
while reducing:

• Heat buildup
• Water hammer
• Pressure oscillations
• Seal wear

Operators get smoother operation; managers see fewer preventable downtime events.

Performance Specs (Quick Reference)

• Max Pressure: 310 bar (approx. 4,500 PSI)
• Max Flow: up to 10.5 GPM
• Temperature: up to 194°F (90°C); confirm seal set for hot-chemical use
• Connections: 27M ports for robust, leak-resistant installation
• Spring: black high-pressure class with adjustable regulation
• Typical Use: trapped-pressure unloader for commercial cold or hot-water systems

Build and Materials (Made to Last)

The reinforced VRT3 body and precision valve stack are designed for reliability in harsh environments. Metal
threaded ports ensure strong sealing and repeatable torque, while the compact body fits easily into skids, carts,
and wall-mount bays. Standardized VRT3 port locations simplify plumbing and fleetwide service.

Benefits and Differentiators

• High-pressure stability with black-spring regulation
• Smooth bypass behavior minimizes heat, oscillations, and hose whip
• Predictable adjustments improve training and setup time
• Shared VRT3 wear parts ensure fast, low-cost maintenance
• 27M connections support clean, professional installs
• Widely adopted platform trusted by OEMs and contractors

Industries and Applications

• Contractor rigs and mobile wash fleets
• Industrial cleaning facilities and production plants
• Commercial fleet wash and rental yards
• Municipal and public works washdown
• Construction and heavy-equipment cleaning
• Agriculture and food-equipment washdown (verify chemical compatibility)

Compatibility and Fit

Plumbing and Orientation

• Install downstream of the pump and upstream of the hose or reel
• Route bypass line back to tank when required
• Use high-pressure rated thread sealant and verify torque

Porting

• Equipped with 27M connections for strong, industry-standard integration
• If adapting threads, use rated fittings and verify sealing surfaces

Power Pairing

• Ideal for triplex pumps up to 10.5 GPM in the 4,000–4,500 PSI range
• Use with thermal relief valve, inlet filtration, gauge tee, and burst-rated hose assemblies

Nozzle and Orifice Guidance

• Select a spray tip orifice matching pump GPM at target PSI
• Adjust pressure only with trigger open and system flowing
• Ensure all components meet or exceed system PSI—especially when using turbo nozzles

Recommended Accessories

• High-pressure hose rated above system PSI
• Inlet filter or screen
• Pressure gauge tee for accurate setup

Setup, Service, and Reliability

• Prime with clean water and purge air before startup
• Adjust pressure only with the trigger pulled
• Inspect inlet screens regularly
• Watch for chatter or pressure creep as signs of wear
• Replace wear parts on a preventive schedule
• Maintain proper water quality, temperature, and chemical limits

VRT3-310 Unloader Valve – 310 Bar (4,500 PSI) High-Pressure Regulator

• VRT3-310 unloader valve with black spring
• 27M connections
• Basic installation and setup guidance