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Unloader VHP39

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High-Pressure Unloader Valve for Industrial Pump Protection

The VHP39 Unloader Valve is engineered for heavy-duty industrial applications requiring stable, reliable pressure regulation. With a rated pressure of 5,070 PSI and a maximum limit of 5,650 PSI, this unloader delivers consistent performance in demanding environments such as hydro jetting, NDD systems, pressure cleaning, and industrial water transfer.

Built from durable materials with precision BSP connections, the VHP 39 ensures efficient bypass flow, pump protection, and smooth pressure control during operation. Designed for long-term use in Australian industrial conditions, it maintains dependable regulation without pressure spikes—ensuring safer equipment operation and reduced pump wear.

This unloader valve is ideal for contractors, industrial operators, and fleet managers who need a robust and maintenance-efficient pressure control solution.

Applications & Uses

Suitable for a wide range of commercial and industrial systems:

  • High-pressure water jetting units

  • Hydro excavation & NDD equipment

  • Industrial pressure washers

  • Sewer and drain jetting equipment

  • Pump bypass protection systems

  • Construction, agricultural & mining water systems

  • Commercial cleaning and maintenance operations

Key Features

  • Heavy-duty design rated to 5,070 PSI

  • Efficient bypass system with dual 3/8” BSP ports

  • Stable, smooth pressure regulation

  • Built for long-lasting industrial use

  • Protects pumps from over-pressure and pressure spikes

  • Ideal for high-flow and high-pressure systems

Technical Specifications

  • Rated Pressure: 5,070 PSI

  • Max Pressure: 5,650 PSI

  • Max Flow: 40 L/min

  • Rated Temperature: 90°C

  • Inlet: 3/8” BSP Female

  • Outlet: 3/8” BSP Female

  • Bypass: 2 × 3/8” BSP Female

  • Weight: 0.92 kg

226.00 226.00 (Tax excluded)

Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days