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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 virtually eliminates the “kick-back” (that occur with pressure-actuated type of unloaders) upon start up.

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SPECIFICATIONS

U.S. Metric
Flow 3.0 – 4.5 GPM 12 – 17 L/min
Pressure (Maximum) 0-3000 PSI 0-207 bar
Continuous Temperature 160 ºF 70 ºC
Inlet 3/8″ FNPT
Outlet 3/8″ FNPT
Weight 2.0 lbs 0.9 kg
Materials Brass

REPAIR KITS

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

Repair Kits Available

The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.

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.