UNLOADERS, INJECTORS, VALVES & GUAGES Control Set “W” Series / Integrated Regulator/Unloader Designed exclusively to fit Interpump and General pumps. ! Mounts directly on pump inlet and outlet; internal bypass loop ! Pressure actuated: “Instant-On” ! 3/8" MPT outlets ! Integrated injector — Optional ! Pressure- and flow-engineered for specific pump models “K” Series Pressure Regulators Unloaders relieve line pressure in bypass mode. ! 3/8" FPT Inlet ! 165°F Part No K3 8.712-603.0 8.712-605.0 8.712-607.0 8.712-609.0 8.712-604.0 8.712-606.0 8.712-608.0 8.712-610.0 K5 Part No Old No “W” Series Unloaders 8.712-638.0 8.712-640.0 8.712-643.0 8.712-644.0 8.702-883.0 8.702-888.0 462636 462639 462643 462644 103093B 103098B “W” Series Unloaders with Injectors 8.712-637.0 8.712-641.0 8.712-642.0 8.712-645.0 8.712-647.0 8.702-884.0 462635 462640 462642 462645 462647 103094B Model W1 W1-L W2 W2-L GPM 4.00 4.00 5.56 5.56 W2/W2L Rebuild Kit W1/W1L Rebuild Kit W1-0 W1L-1 W2-1 W2L-1 W2L-2 2.1-2.9 3.0-4.0 2.9-4.0 2.9-4.0 4.2-5.5 Injector Maintenance Kit 1600 1600 3000 3000 3000 W907 W99 W997 W201 WS202 Fits PSI Pump 1600 1600 3000 3000 W905 W99 W997 W201 8.712-611.0 8.712-613.0 8.712-615.0 8.712-612.0 8.712-614.0 8.712-616.0 462551A 462552A 462553A K5.1 K5.2 K5.3 K5.1 K5.2 K5.3 2.90-4.22 4.22-6.60 3/8" M 3/8" M 6.60-10.83 3/8" M 2.90-4.22 4.22-6.60 1/2" M 1/2" M 6.60-10.83 1/2" M NOTE: 1) Use 8.705-045.0 back nut on bypass nipple when mounting 1/2" by pass line on K3s and K5s. 2) Use-restricted (.156 - .225 ID) orifice in bypass line for smoother operation/ pressure balancing. Part No 8.715-478.0 Description Bypass plate for K3/K5 8.701-386.0 K7 - #0 Bypass Orifice 2.2 mm 8.701-389.0 K7 - #1 Bypass Orifice 2.5 mm Old No 462530A 462531A 462532A 462533A Model K3.0 K3.1 K3.2 K3.3 K3.0 K3.1 K3.2 K3.3 GPM 2.10-2.90 2.90-4.22 4.22-5.55 5.00-6.50 2.10-2.90 2.90-4.22 4.22-5.55 5.00-6.50 ! 1/2" FPT B Outlet 3/8" M 3/8" M 3/8" M 3/8" M 1/2" M 1/2" M 1/2" M 1/2" M “K” Series Pressure Regulators Kits Repair Kits for All K3, K5, K7 and K9 models. Part No Old No 8.702-850.0 8.702-847.0 8.702-849.0 8.705-045.0 8.702-858.0 8.702-911.0 103061B 103058B 103060B 140070 103070B 103121B Description K3 Rebuild Kit K5 Maintenance Kit K5 Rebuild Kit K5 Back Nut 3/4" NPT K7 Repair Kit K9 Repair Kit K7 ! 3/8" FPT Part No 8.712-617.0 8.712-618.0 8.712-619.0 8.712-620.0 ! 2.3-10.8 GPM Part No 8.712-602.0 8.712-601.0 ! 1/2" FPT Part No 8.712-621.0 Old No 462574 Model K9 Old No 462526 462525 Old No 462570 462571 462572 462573 Model K7.0 K7.1 K7.2 K7.3 ! 3/8" inlet BSP-F Model 2K138 ZK1 ZK1 K9 ! 165°F GPM 2.11-2.90 2.90-4.22 4.22-6.60 6.60-10.8 Outlet 3/8" M 3/8" M 3/8" M 3/8" M ! 165°F Outlet / Bypass 3/8" BSP-M 1/2" BSP-M ! 165°F GPM 13.2 Outlet 1/2" M K3 Page 120
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