The pressure water spray gun is engineered with revolutionary design making it durable and worth the money spent. The car care product is available at attractive prices. Easy to Use The pressure water spray gun is easy to install. It is also easy to use and does not require any skills.A low pressure washer on the other hand uses a slower stream of water at lower pressures. The low pressure helps keep the motor of the device cooler and more efficient, but it does require more effort and can cause skin irritation if the person uses it for long periods of time.Before buying a low pressure washer, though, it's a good idea to read customer reviews. Some customers will tell you their biggest problem with commercial grade washers is the fact that they are so difficult to use. This makes buying a plastic sprayer an obvious choice.