W2 Unloader - Control Set

The General Pump / Interpump W2 Control Set Unloader is for pressure washing equipment and is designed to mount directly on the pump head inlet and outlet of certain Interpump and General Pumps.

This W2 Unloader Control Set with chemical injector can be used with the following General Pumps: T811, TS1011, TS1311, TS1331, TS1511, TS1711, TS2011, T9131, and T9211.

Note: It is recommended to use a safety relief valve in conjunction with this unloader valve when installed on a positive displacement pump.

Features:

• Trapped pressure control set bolt-on unloader
• Reduces cost by eliminating the need for fittings and bypass hose
• Compact design features forged brass body and hardware
• Versatile, mounts in seconds to either side of pump manifold
• Trapped pressure type adjustable unloader valve with internal bypass system
• Built-in chemical injector includes variable metering adjustment

Specifications:

• Flow Range: 2.9 - 4.5 GPM (11 - 17 LPM)
• Maximum Pressure: 3000 PSI (207 BAR)
• Maximum Temperature: 200 degrees Fahrenheit (93 degrees Celsius)
• Inlet Port Size: 1/2"-14 BSPP-F (13 mm)
• Outlet Port Size: 3/8"-19 BSPP-M (9.5 mm)
• Chemical Inlet: 5/16" (8 mm) I.D. Hose
• Dimensions: 8.5" x 2.0" x 5.0" (216 mm x 51 mm x 127 mm)
• Weight: 4 lbs. (1.8 kg)
• Repair Kit: Kit 94, Barens order #3569
• Rebuild Kit: Kit 93, Barens order #1743

The W2 Unloader Repair Kit #93 includes:

• 1 x 94.7516.00 Spring
• 1 x 90.5034.00 Back-up Ring
• 2 x 90.3577.00 O-Rings
• 1 x 94.7384.00 Spring
• 5 x 90.3574.00 O-Rings
• 3 x 90.3822.00 O-Rings
• 1 x 90.5065.00 Back-up Ring
• 1 x 36.3137.66 Valve Seat
• 1 x 90.3593.00 O-Ring
• 2 x 97.4838.00 Balls
• 1 x 90.3843.00 O-Ring
• 1 x 94.7374.00 Spring
• 1 x 90.3841.00 O-Ring
• 1 x 90.3827.00 O-Ring
• 1 x 94.7355.00 Spring
• 1 x 36.3104.51 Valve Guide
• 1 x 90.3839.00 O-Ring

The W2 Unloader Repair Kit #94 includes:

• 1 x 90.3832.00 O-Ring
• 3 x 90.3822.00 O-Rings
• 1 x 90.3582.00 O-Ring
• 1 x 94.8217.00 Taper Spring
• 1 x 97.4782.00 Ball
• 1 x 90.3572.00 O-Ring
• 1 x 90.3585.00 O-Ring
• 1 x 94.7383.00 Spring
• 1 x 90.3580.00 O-Ring
• 2 x 90.3570.00 O-Rings