A pressure-sensitive unloader gives all the pressure control of a regulator, plus provides an energy and system savings feature that by-passes flow at low pressure when there is zero demand. This feature is typically only used in applications using shut-off guns because the unloader reacts to the back pressure (pressure spike) caused when the gun is shut off. When the shut-off gun is opened back up the system will return to established pressure.
A wide-range of unloaders is available from Cat Pumps, and feature color-coded springs for easy identification. Convert one model to another model by simply substituting the spring. Compact design with multiple port sizes available.
Product Range:
0.5 to 120 GPM, 100 to 7,250 PSI
Typical usage:
Used for single pump, multiple pumps, nozzle and gun applications.
Materials:
Available in brass, 304 and 316 stainless steel
Elastomers are available in medium nitrile buna (NBR), fluorocarbon (FPM), ethylene proplylene diene monomer (EPDM), and more.