Trapped Pressure Unloader Valve

Trapped Pressure Unloader Valve

This convenient tool regulates pressure on plunger pump systems.

The Moro USA Trapped Pressure Unloader Valve stands as an indispensable component in the realm of high-pressure water systems, superbly engineered to guarantee reliability and efficiency. Designed with precision, this unloader valve ensures consistent pressure control, preventing the build-up of dangerous pressures and enhancing the longevity of your equipment.

Durable, with a robust construction, it is suitable for a wide range of applications, from industrial cleaning to pressure washing systems. Its easy installation and maintenance make it a favorite among professionals seeking performance and dependability.

What are Trapped Pressure Unloader Valves Used For?

A pressure washer’s unloader valve is a crucial component that effectively manages water flow during operation. When the spray gun trigger is not activated, this valve redirects the water flow to a bypass mode, preventing unnecessary pressure build-up. This precise regulation is achieved by the valve’s ability to sense changes in pressure and water flow, enabling adjustments to the machine’s pressure levels accordingly. Essentially, the unloader valve and gun trigger work together as a dual-component system. They either divert water back to the pump’s inlet side or to a storage tank when water flow stops. This mechanism ensures that releasing the trigger increases line pressure, activating the bypass through the trapped pressure unloader valve.

On the other hand, flow-actuated unloaders redirect the flow when a significant decrease or stop in water movement is detected. The trapped pressure unloader valve, featuring a spring mechanism housed in a robust brass or stainless steel body, uses a piston-mediated channel to reroute water to the bypass once the trigger is released. This ensures efficient and safe operation by maintaining optimal pressure and redirecting flow as needed.

How To Tell if Your Pressure Unloader Valve is Stuck?

If You’re Getting Low-to-No Pressure From the Wand:

Typically, the initial indication of a malfunctioning unloader valve manifests as a lack of pressure from the wand upon pressing the trigger. This issue arises when the unloader valve remains in an open position, thereby preventing water from flowing into the hose and trigger mechanism.

Under such circumstances, the valve fails to detect pressure variations, leading to continuous water recirculation back into the pump. Consequently, while the water supply to the pump stays uninterrupted, the absence of pressure release means the engine is at risk of overheating because it lacks the influx of cool, fresh water needed for cooling the pump.

If You’re Getting Too Much Pressure From the Wand:

When an unloader valve becomes jammed in the closed position, it typically leads to engine stalling and leakage from the spray tip. This happens because the stuck valve fails to alleviate the pressure, despite the trigger being activated. Because the built-up pressure from the pressure washer isn’t discharged through the valve as intended, leakage at the spray tip often occurs. In many cases, this accumulation of unreleased pressure will cause the engine to stall upon reaching its pressure output limit.

Need Help Troubleshooting Your Unloader Valve Issues?

The team at Moro USA is on standby to provide user-friendly support when experiencing stuck unloader valves. We’ll help find the proper replacement valve or how to salvage the machinery needed to keep your business running!

Trust Moro USA to keep your operations running smoothly with this top-tier trapped pressure unloader valve.