Need to fine-tune your pressure washer's output? This Mecline VR54-150 adjustable unloader valve is the part you're looking for. It's brand new in its packaging, and it lets you control the pressure right up to a solid 2,175 PSI – just turn the black knob to adjust. This Italian-made part is a common replacement for many pressure washer pumps that need a new pressure regulator. The MPN is VR54-150 (also referenced as 8.753-028.0). Perfect for when your washer is stuck at full blast, has low pressure, or won't hold pressure. A straightforward swap for DIYers and pros who work on pressure cleaning equipment. Just make sure your pump model matches this unloader's specs before you buy. Gets your washer back to working exactly how you want it.