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General Pump Unloaders

Flow Control Unloaders
Name Description Quantity Price Order
General Pump #ZK3 Unloader Valve


More Info

*Inlet=3/8" FNPT
*Outlet=3/8" MNPT
*Bypass=3/4" MNPT
*Pressure=0-1450 PSI
*Flow sensitive

Flow Rate/Part No.
$72.95

General Pump #ZK5 Unloader Valve


More Info

*Inlet=3/8" FNPT
*Outlet=3/8" MNPT
*Bypass=3/4" MNPT
*Pressure=1450-3000 PSI
*Flow sensitive

Flow Rate/Part No.
$76.95

General Pump #ZK7 Unloader Valve


More Info

*Inlet=3/8" FNPT
*Outlet=3/8" MNPT
*Bypass=3/8" FNPT
*Pressure=0-3000 PSI
*Flow sensitive

Flow Rate/Part No.
$91.95

General Pump #ZK9 Unloader Valve


More Info

*Inlet=1/2" FNPT
*Outlet=1/2" MNPT
*Bypass=1/2" FNPT
*Max Pressure=5800 PSI
*Flow sensitive

Flow Rate/Part No.
$458.50



Flow Control Unloader Repair Kits
Name Part No. Description Quantity Price Order
Repair Kit for Unloader Valves


ADI-346 *Maintenance
*For Generals Interpump #ZK5 Series
* ZK50, ZK51, ZK52, ZK53
$48.20

Repair Kit for Unloader Valves


ADI-347 *Complete rebuild
*For Generals Interpump #ZK5 Series
* ZK50, ZK51, ZK52, ZK53
$70.10

Repair Kit for Unloader Valve


ADI-349 *Maintenance kit
*For Generals Interpump #ZK9 Series
Repair Kit 121
$186.30

Repair Kit for Unloader Valves


ADI-354 *Maintenance
*For Generals Interpump #ZK3 Series
* ZK30, ZK31, ZK32, ZK33
$46.00

Repair Kit for Unloader Valves


ADI-355 *Complete rebuild
*For Generals Interpump #ZK3 Series
* ZK30, ZK31, ZK32, ZK33
$73.80



Direct Mount Unloaders (eliminates need for bypass fittings & bypass hose).
Name Part No. Description Quantity Price Order
General Pump ZKW21L Unloader Valve, Control Set, & Injector



More Info

ADI-103 *Trapped Pressure Control Set Unloader with Chemical Injector
*Inlet=1/2 -14 BSPP-F
*Outlet=3/8-19 BSPP-M
*Max Pressure=3000 PSI
*Flow Rate=2.9-4.5 GPM
*Max Temp=200° F
*Direct mount used on General Pump models T811, TS1011, TS1311, TS1331, TS1511, TS1711, TS2011, T9131, T9211
$102.10

General Pump ZOKR1 Unloader Valve, Control Set, Injector, Pressure Gauge, Filter


ADI-107 *Trapped Pressure Control Set Unloader with Chemical Injector
*Inlet=1/2" FNPT
*Outlet=3/8" *Chemical injector, pressure gauge, and filter
*3/8" F x M22
*1/4" Hose barb
*1000 PSI maximum pressure
*2.3 GPM flow rate
*Control set
$98.25

General Pump ZKW1 Unloader Valve



More Info

ADI-108 *Trapped Pressure Control Set Unloader with Chemical Injector
*Inlet=3/8" FNPT
*Outlet=3/8" MNPT
*2.2 mm chemical injector
*Max Pressure=1600 PSI
*Flow Rate 2-3 GPM
*Max Temp=165° F
*Direct mount used on General Pump TT551, TT561, TT741, TT751, TT901, TT931, T9051, TT9061, TT9071, TS1021
$85.03

General Pump YVB75KDMN Unloader Valve



More Info

ADI-1463 *Trapped Pressure Unloader
*Inlet=1/2 FNPT
*Outlet=3/8" FNPT
*Rated Pressure=3250 PSI
*Max Pressure=3650 PSI
*Max GPM=8 GPM
*Max Temp=195° F
*Direct mount used on General Pumps EZ, 47 Series, 63 Series, and 51 pumps.
$59.95

General Pump ZKW21 Unloader Valve, Control Set & Injector



More Info

ADI-10005 *Trapped Pressure Control Set Unloader with Chemical Injector
*Inlet=1/2 FNPT
*Outlet=3/8" MPNT
*Max Pressure=3000 PSI
*Flow Rate=2.9-4.5 GPM
*Max Temp=200° F
*Direct mount used on General Pump models TS1371, TT1411, TT1611, TT9351, TT9441, T9971, All EZ Pumps.
$98.95

General Pump Unloader



More Info

ADI-10114 *YVB135KDM
*Max PSI=2600
*6.5 GPM
*Built in By Pass
*Output=1/4" FNPT
*Inlet=3/8" FNPT
*Max Temp 195 F
*Direct mount on for TT/TP Series 51 Pumps.
$55.95



Trapped pressure unloaders.
Name Part No. Description Quantity Price Order
General Pump Pulsar3KHP Unloader Valve



More Info

ADI-101 *Trapped Pressure Unloader Valve
*Inlet=3/8" FNPT
*Outlet=3/8" FNPT
*Bypass=3/8" FNPT
*Max Pressure=4000 PSI
*Max GPM=7.8 GPM
*Max Temp=194° F
$48.95

General Pump YVB7K Unloader Valve



More Info

ADI-104 *Trapped Pressure Unloader
*Inlet=3/8" MNPT
*Outlet=3/8" FNPT
*Bypass=3/8" FNPT
*Max Pressure=3650 PSI
*Max GPM=8 GPM
*Max Temp=195° F
$56.95

General Pump YU3678 Unloader Valve


ADI-105 *Modified Pressure Unloader
*Inlet=3/8" FNPT
*Outlet=3/8" FNPT
*Bypass=3/8" FNPT
*Max Pressure=3650 PSI
*Max GPM=8 GPM
$84.40

Unloader Valve



More Info

ADI-340 Generals Interpump #ZKHM series
*10.8 GPM flow rate
*3000 PSI maximum pressure
*3/8" F x 3/8" M or 1/4" F
*(2) 3/8" Female bypass
*Trapped pressure
$79.40

Unloader Valve



More Info

ADI-341 Generals Interpump #ZKHM series
*without spring and knob
*10.8 GPM flow rate
*3000 PSI maximum pressure
*3/8" F x 3/8" M or 1/4" F
*(2) 3/8" Female bypass
*Trapped pressure
*w/EZ
$76.95

General Pump YVB9KMS Unloader Valve with Micro Switch



More Info

ADI-1439 *Trapped Pressure Unloader with Micro Switch
*Inlet=3/8" FNPT
*Outlet=3/8" FNPT
*Bypass=3/8" FNPT
*Max Pressure=3650 PSI
*Rated Pressure=3200 PSI
*Max GPM=8 GPM
*Max Temp=195° F
*Switch is waterproof!
$85.35

Repair Kit


ADI-1440 *For General Unloader #YVB9KMS $26.80

General Pump YU2140 Unloader Valve



More Info

ADI-1454 *Trapped Pressure Unloader
*Green Spring
*Inlet=(2) 1/2" FNPT
*Outlet= 1/2" FNPT
*Bypass=(2) 1/2" FNPT
*Max Pressure=4350 PSI
*Max GPM=21 GPM
*Max Temp=200° F
$101.95

Repair Kit


ADI-1455 *For General Pump Unloader #YU2140 & #YU2121 $18.95

General Pump YU2158 Unloader Valve



More Info

ADI-1458 *Stainless Steel Trapped Pressure Unloader
*Inlet=(2) 1/2" FNPT
*Outlet=1/2" FNPT
*Bypass=(2) 1/2" FNPT
*Max Pressure=5800 PSI
*Max GPM=21 GPM
*Max Temp=200° F
$436.40

Repair Kit


ADI-1459 *For General Pump Unloader #YU2158 $14.95

General Pump YU5075KS Unloader Valve



More Info

ADI-1460 *Trapped Pressure Unloader
*Inlet=3/8" MNPT
*Outlet=3/8" FNPT
*Bypass=1/2" FNPT
*Max Pressure=5650 PSI
*Rated Pressure=5100 PSI
*Max GPM=10.5 GPM
*Max Temp=195° F
*SS internal components
$115.30

General Pump YVB130KTTI21 Unloader Valve w/Knob & Chemical Injector



More Info

ADI-1462 *Trapped Pressure Unloader with Chemical Injector
*Inlet=1/4" MNPT
*Outlet=3/8" MNPT
*Bypass=3/8" FNPT
*Max Pressure=2600 PSI
*Rated Pressure=2300 PSI
*Max Temp=195° F
*Unloader for the General Pump TT Series 51
$52.45

Unloader Valve



More Info

ADI-1464 Generals PA #YU2121
*Yellow spring
*21 GPM flow rate
*2450 PSI max. pressure
*(2) 1/2" F x 1/2" F
*(2) 1/2" Female bypass
*Trapped pressure
$98.45

Unloader Valve



More Info

ADI-1465 Generals PA #YU831D
*8 GPM flow rate
*3650 PSI max. pressure
*(2) 3/8" F x 3/8" F
*(2) 3/8" Female bypass
*Trapped pressure
$48.95

Repair Kit


ADI-1466 *For General Pump Unloader #YU831D $12.37


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