VRT3-310PS6 | 4500 PSI 27M Unloader Valve with PS6 Control

Overview

• The VRT3-310PS6 unloader valve combines heavy-duty
  310 bar (≈4,500 PSI) pressure regulation with
  integrated safety monitoring in one compact assembly.
• Built on the proven VRT3 platform and tuned with a
  high-pressure black spring for stable, repeatable control
  across long hose runs and demanding tools.
• During operation, the unloader automatically diverts flow to bypass
  the instant the trigger is released, minimizing heat, chatter, and water hammer.
• The integrated PS6 pressure switch adds a supervisory signal
  for panels or controllers, enabling alarms or automatic shutdown when conditions
  approach unsafe limits.
• Ideal for safety-critical contractor and industrial environments
  requiring both hydraulic protection and live pressure monitoring.

What This Means for Your Rig

• Perfect for builds that require interlocks, E-stops, or PLC oversight,
  allowing you to regulate and monitor pressure from a single, service-friendly unit.
• Fewer external tees and joints mean cleaner plumbing and
  fewer leak points.
• The PS6 switch provides a clear on/off signal to your controller
  for fast response to abnormal pressure conditions.
• Crews gain a uniform, predictable feel across machines, while
  managers benefit from simpler commissioning and clearer documentation for safety procedures.

Performance Specs (Quick Reference)

• Max Pressure: 310 bar (approximately 4,500 PSI)
• Max Flow: up to 10.5 GPM
• Temperature: up to 194°F (90°C) typical for VRT3 class; confirm seal set for hot-chemical use
• Connections / Ports: Inlet, Outlet, Bypass – 3/8 in NPT female (National Pipe Thread, US)
• Regulation: adjustable high-pressure control with black spring (4,500 PSI class)
• Monitoring: PS6 pressure switch for signaling or shutdown (wire to panel/PLC)
• Typical Use: trapped-pressure unloader for commercial cold- or hot-water systems with safety interlocks

Build & Materials (Made to Last)

• Reinforced VRT3 body, precision valve stack, and metal threaded ports
  engineered for continuous duty under vibration, transport, and daily cycling.
• Standardized port locations support clean routing to gauge tees, hose reels,
  and return-to-tank lines.
• Integrated PS6 pressure switch reduces external fittings,
  simplifies troubleshooting, and shortens install time.
• Common VRT3 wear parts keep preventive maintenance predictable and
  budget-friendly across fleets.

Benefits & Differentiators (Why Choose This Model)

• Dual function in one body: pressure regulation plus live pressure monitoring.
• Safer operation: PS6 allows alarms or automatic shutdown before conditions become hazardous.
• Clean plumbing: fewer adapters and tees mean fewer leak paths and faster installs.
• High-pressure stability: black spring maintains set pressure in the 4,500 PSI class.
• Smooth bypass behavior: reduces pressure spikes, hose whip, and seal wear when the trigger cycles.
• Fleet-friendly: shared VRT3 parts and familiar service procedures across rigs and wash bays.

Industries & Applications

• Industrial wash bays and manufacturing plants
• Safety-compliant contractor rigs and mobile wash fleets
• Fleet maintenance facilities and rental yards
• Municipal/public works equipment washdown
• Construction and heavy equipment cleaning
• Agriculture and food facilities (with verified chemical compatibility and temperature limits)

Compatibility & Fit (Mounting, Plumbing, Nozzles)

• Plumbing & orientation: install downstream of the pump and upstream of hose/reel.
  Route bypass back to tank when recirculation is required.
• Use thread sealants approved for high-pressure water and verify torque on metal fittings.
• Porting standard: Inlet, Outlet, Bypass are 3/8 in NPT female (National Pipe Thread, US).
  If adapting to BSP or other standards, use rated adapters and confirm sealing surfaces and flow path.
• Electrical integration: wire the PS6 pressure switch to your control panel or PLC per your schematic.
  Confirm voltage/current ratings, fail-safe logic (normally open/closed), and test alarm/shutdown during commissioning.
• Power pairing: ideal with triplex pumps up to 10.5 GPM in the 4,000–4,500 PSI range on gas-engine or electric builds.
• Include thermal relief, inlet filtration, a regulator/gauge, and
  burst-rated hose/wand assemblies for a complete, protected system.
• Nozzle/orifice guidance:
  • Select a spray tip orifice that matches pump GPM at target PSI; correct orifice is critical for stable pressure.
  • With flow present (trigger open), adjust to reach working pressure, then secure the setting.
  • Turbo nozzles can create spikes; ensure every component—including the unloader—is rated at or above system pressure with margin.

Setup, Service & Reliability

• Prime with clean water, purge air, and confirm supply before first start.
• Adjust pressure only with the trigger pulled to avoid false readings and over-pressure.
• Inspect inlet screens regularly; watch for chatter or creeping pressure as indicators of wear or contamination.
• Verify PS6 switch operation during commissioning and schedule periodic functional tests.
• Service using appropriate VRT3 wear parts on a preventive cadence.
• Keep temperature, chemical exposure, and water quality within manufacturer limits to maximize seal life and efficiency.

What Is Included

• VRT3-310PS6 unloader valve with integrated PS6 pressure switch.
• Ports: Inlet, Outlet, Bypass – 3/8 in NPT female (National Pipe Thread, US).
• Basic installation and setup guidance for both hydraulic and electrical integration.

Notes

• Use the 310 bar (approximately 4,500 PSI) rating in titles and bullets for accuracy and consistency.
• Document PS6 wiring diagrams and shutdown logic on your product page or install guide so technicians can
  complete commissioning on the first visit.