Come to think of a situation where a person is washing their car with a pressure washer, and when spraying the car, their hose suddenly collapses, and the pressure washer flies into the air. At first glance, it might seem like they didn’t have enough fluid in the pressure washer to keep it at full power.

However, the pressure washer needs some pressure in order to actually do any work. To start with, it needs some air to push against. And while it’s pushing against air, it needs some water under high pressure to be pushed out of the nozzle and into the air. The hose is designed to pressurize this mixture as much as possible – and unfortunately, sometimes these pressure washers lose their pressure.

How does that happen? Here are reasons why your pressure washing machine could be losing pressure including those that use Max pressure between 3000-6900 PSI.

Factors that Trigger Loss of Pressure in Pressure Washing Machines

Hose losing its pressure

The answer is simple: the washing machine has a pressure switch. It is triggered by pressure from the hose, which should be approaching 60 psi, and it shuts off the motor. The problem is that when the washing machine has been used for a while, the hose may lose some of its pressure.

This happens because the hose is not a rigid tube that follows its shape down to the end. It’s rather more flexible than that, and as it gets longer and longer, it’s likely to get looser. The hose also twists around on itself as you use it, so new sections of the hose will tend to join at different places along its length. As a result, there will often be several different “stations” along with the hose where water pressure varies by quite a lot. This happens most frequently at bends or wherever there’s a bend in the hose

Belt slippage

A slipping belt can cause pressure to slip. However, you should tighten or replace it entirely in order to fix the problem and ensure that you have the right belt in the first place.

Lack of sufficient pressure in the system

Pressure washers use compressed air to push water around. Compressed air is basically just high-pressure steam. So, if there isn’t enough pressure in the system, there isn’t enough steam either; so, there’s not enough force to clean things effectively.

Relief valve issues

When a pressure washer uses a relief valve to control the pressure in the gas line, the relief valve can wear out. When this happens, the washing machine loses pressure, even though it’s still running.

The reason for this is that the valve is only designed to open at a certain pressure, so if the pressure drops below that level, it closes again. The easiest and cheapest thing to do is replace the valve. But if you do this and then find that you’re still having problems, a second option is to change the little rubber elbow that connects the hose to the pump.

Poorly designed pump

A poorly designed pump can lose all its pressure very quickly before it has time to wear out and needs replacing. Conversely, if the pressure pump draws too much current (a situation called “surge”), it can burn out and need replacing right away.

Key Takeaway

Maintaining a pressure washer is vital in order to prevent it from losing its pressure. And whether you are an average homeowner or a contractor who needs to knock off a lot of dirt from your surface, Giraffe Tools has the right pressure washer for you. You can place your order now to get a high-quality pressure washing machine to meet your needs.


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