These are flow-actuated valves which control the flow of the water to the nozzle(s).  During bypass mode, all of the water is directed back to the supply.  Since the pressure is relieved in the discharge line, high-pressure fluid is not trapped in the discharge portion of the system.  The great advantage of this is that it is easier to start up the system again and provide additional safety because an operator does not feel the “kick” when a gun is engaged as the pressure develops in a few seconds (as opposed to immediately with a pressure-actuated valve). This valve is typically used for applications which require frequent on/off action, such as pressure washers.  They are not designed for multi-gun operations. Flow ranges are from 1.5 GPM (5.7 l/min) to 13 GPM (49 L/min) and pressure range is from 0 PSI to 15,000 PSI (to 1000 Bar).  Metal materials are forged brass and stainless steel and elastomers will be either Nitrile or Viton.

22648
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22648A
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22650
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22650A
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22654A
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22655
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22656
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and virtual
22665
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable hand wheel that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and
22675-F26
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable hand wheel that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and
22675-M08
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable hand wheel that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and
22675-M24
This is a flow-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable hand wheel that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader does not “trap” pressure, so it eliminates the need for an easy start valve and
ACCESSORIES
Service & Repair

Giant provides service on each pump and accessory that we sell. Many basic repair procedures are covered in the Giant repair manual. For all other questions on service or repair needs please contact your local Giant distributor.