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 virtually eliminates the “kick-back” (that occur with pressure-actuated type of unloaders) upon start up.
WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
| Specification | US | Metric |
|---|---|---|
| Minimum Flow | 4.5 GPM | 17 L/min |
| Maximum Flow | 6.5 GPM | 25 L/min |
| Minimum Pressure | 0 PSI | 0 bar |
| Maximum Pressure | 3000 PSI | 207 bar |
| Tempurature Rating | 160 °F | 70 °C |
| Inlet Port | 3/8" FNPT | |
| Outlet Port | 3/8" FNPT | |
| Bypass Port | 3/4" MNPT | |
| Weight | 2 lbs. | 0.9 kg |
| ITEM# | PART# | DESCRIPTION | Qty. |
|---|---|---|---|
| Short Repair Kit – Part #22666 | |||
| 5 | 22640 | O-Ring, Seat | 1 |
| 9 | 22641 | Shim | 1 |
| 10 | 22608 | O-Ring | 1 |
| 16 | 22618 | O-Ring, Nipple | 1 |
| 18 | 22622 | O-Ring, Sleeve | 1 |
| 21 | 22609 | Piston Ring | 2 |
| 23 | 22792 | Snap Ring | 1 |
| 25 | 22659 | O-Ring | 1 |
| Long Repair Kit – Part #22688 | |||
| 1 | 22601 | Nut | 1 |
| 2 | 22602 | Valve Cone | 1 |
| 3 | 22661 | Piston Rod | 1 |
| 4 | 22660 | Seat | 1 |
| 5 | 22640 | O-Ring, Seat | 1 |
| 6 | 22605 | Piston | 1 |
| 7 | 22691 | Spring | 1 |
| 7A | 22689 | Helper Spring | 1 |
| 8 | 22694 | Cone Washer | 1 |
| 10 | 22608 | O-Ring | 1 |
| 18 | 22622 | O-Ring, Sleeve | 1 |
| 21 | 22609 | Piston ring | 2 |
| 23 | 22792 | Snap Ring | 1 |
| 24 | 22642 | Bypass Plate | 1 |
Materials
Brass
Our Company
For 50 years, Giant Pumps has offered the most dependable positive displacement high-pressure triplex pumps available. Designed and built to the highest quality standards, customers count on Giant Pumps products to keep their equipment running. Every design detail of Giant Pumps products is optimized for long-life and reliable performance, making Giant Pumps the most trusted name in high-pressure pumps and systems.