Unloader Valve Manufacturers

An unloader valve is a component used in fluid power systems that is used to relieve pressure and redirect flow. It is typically used in pump systems to bypass fluid back to the inlet side of the pump when the system is not in use or when the pump is not running. This helps to protect the pump and other components in the system from damage caused by excess pressure and flow. The unloader valve can be actuated manually or automatically, depending on the specific design of the system.
An unloader valve is a device used in pressure washer systems to relieve pressure when the trigger gun is not in use. The valve helps to protect the pump and prolong the life of the pressure washer by diverting the flow of high-pressure water back to the inlet side of the pump when the trigger is released. This helps to maintain a constant pressure within the pump, even when the trigger gun is not being used. Unloader valves are commonly adjustable, allowing the user to regulate the amount of pressure relief.
What is the purpose of the unloading valve? What is its working principle?
The purpose of an unloader valve is to regulate the pressure within a high-pressure pump system, typically found in a pressure washer. When the trigger gun is not in use, the unloader valve diverts the flow of high-pressure water back to the inlet side of the pump, helping to maintain a constant pressure and protecting the pump from damage.
The working principle of an unloader valve is based on the reduction of pressure in the high-pressure line. When the trigger gun is not in use, the pressure within the high-pressure line decreases, causing the unloader valve to open. This opens a bypass channel that diverts the flow of high-pressure water back to the inlet side of the pump, reducing the pressure and protecting the pump. When the trigger gun is used, the pressure in the high-pressure line increases, causing the unloader valve to close, allowing the water to flow out through the trigger gun.
Unloader valves are typically standardized according to international industry standards such as the ISO and DIN standards. The most common standards for unloader valves are ISO 8099 and DIN 24550. These standards specify the dimensions, performance criteria, and testing procedures for unloader valves.
Unloader valves are commonly used in high-pressure pump systems, such as those found in pressure washers. They are designed to protect the pump from damage by regulating the pressure within the system when the trigger gun is not in use. Unloader valves are also used in other high-pressure applications, such as in water jet cutting systems, spray painting equipment, and hydrostatic testing equipment.
The choice of unloader valve depends on the specific application, with factors such as flow rate, pressure range, and the type of pump used being considered. Unloader valves are available in a range of sizes and configurations, and can be fitted with various features such as pressure gauges, adjustable pressure relief, and check valves. It is important to select an unloader valve that is suitable for the specific application in order to ensure reliable and efficient operation.