K-10 Soft Touch
Allison - ‘Quantum-Z’
K7 Flow Type
▪ Up to 3,500 PSI
▪ 3/8” FPT Inlet/Outlet
▪ Zero Surge By-pass Orifice
AL-607HV
AL-607 (most popular pressure type)
AU-2848 / YU-2140
Allison A-10 Soft Touch
PA-10 Soft Touch
VB-350
‘MV’ Series
YU-831
PULSAR-4
GP-Control Set
A-R Control Sets
K-9 Soft Touch
2.9 to 4.2 GPM
4.2 to 6.6 GPM
6.6 to 10.8 GPM
Kit for all K-7’s         PDF BREAKDOWN:
You can pull the trigger with your
‘pinky finger’ with the Quantum-Z
▪ Modified Pressure Type
▪ The ‘softest touch’ of them all!
▪ Up to 11 GPM & 4,500 PSI
▪ Comes with 4.5 By-pass disc.

Everyone loves this unloader!
 
 
 
 
 
 
 
▪ Flow Actuated
▪ Up to 3,600 PSI
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
▪ Gentle Start-up
 
 
 
 
Unloader
Repair Kit
▪ Pressure Actuated
▪ ‘AU’ 4,800 PSI @ 28 GPM and
  is best for Dual Gun Operation
▪ ‘YU’ 4,060 PSI @ 21 GPM
▪ 1/2” Inlet, Outlet, 2-By-pass ports
AU-2848 Unloader
2848 Repair Kit
YU-2140 Unloader
2140 Repair Kit
▪ Pressure Actuated
▪ Up to 4,500 PSI
▪ Up to 8 GPM
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
 
 
Without Knob
With Knob
Repair Kit
▪ Pressure Actuated
▪ Up to 4,500 PSI
▪ Up to 10.5 GPM
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
 
 
 
 
Unloader
Repair Kit
▪ Pressure Actuated
▪ Up to 5,650 PSI
▪ Up to 10.5 GPM
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
 
 
 
 
Unloader
Repair Kit
▪ Compensating Soft Touch
▪ Up to 3,800 PSI
▪ Up to 8 GPM
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
▪ Gentle Start-up
 
 
 
 
 
 
Unloader
▪ Compensating Soft Touch
▪ Up to 3,800 PSI
▪ Up to 8 GPM
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
▪ Gentle Start-up
 
 
 
 
 
 
 
▪ Pressure Actuated
▪ Up to 4,500 PSI
▪ Up to 10.5 GPM
▪ 3/8” FPT Inlet
▪ 3/8” FPT Outlet
▪ 3/8” By-pass
 
 
 
 
 
 
 
▪ Pressure Actuated
▪ Up to 4,000 PSI
▪ Up to 8 GPM
▪ 3/8” FPT Inlet
▪ 3/8” FPT Outlet
 
 
 
 
 
 
 
▪ Pressure Trapping
▪ Up to 8 GPM
▪ 3/8” FPT Inlet
▪ 3/8” MPT Outlet
 
 
 
 
to 2000 PSI
to 3600 PSI
▪ Flow Actuated
▪ Up to 5,800 PSI
▪ Up to 13.2 GPM
▪ 1/2” In, Out, By-pass
 
 
 
 
Unloader
Repair Kit
▪ Pressure Actuated
▪ Mini for XT & XW Pumps
▪ Gymatic for XM & RK Pumps
▪ Gymatic for XW & RK Pumps
over 5.0 to 4,000 PSI
 
 
 
 
 
 
 Gymatic - No Inj 
▪ Pressure Actuated
▪ Up to 3,650 PSI
▪ Up to 8.0 GPM
▪ Fits 47,EZ & TX Pumps
 
 
Without Injector
With Injector
Repair Kit
unloaderS AND SAFETY valves
& required Set-up and Test Tools
Blue-Squirly.jpg
EnviroSpec
CLICK ON PART NUMBER TO VIEW PRICE                                Customer Log-in
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Related Articles
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Unloader-VB10-2013.tif
K10 CVC.tif
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Unloader-Quantum.tif
Unloader-607-premium.tif
Unloader-K9-2013.jpg
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UnlControlGP.tif




Kit includes: (1) 90384900, (1) 90505200, (1) 90382000, (1) 701012,
(1) 94746400, (1) 90276600, (1) 90256500, (1) 90506300, (1) 90383300,
(1) 90382300, (1) 90386300, (2) 701013, (1) 701126
unloader - mv550.tif
Safety-Releif-barb-2014.jpg
YU831_CVC.tif
Unloader-607-2012.tif
*Lower Cost
Replacement for
 VB-10 & PA-10
The Softest Touch
Unloader in the industry!
UnlBlock.tif
#10119
Pulsar4-2015.jpg
2.1 to 2.9 GPM
K7 07.tif
Safety Pressure Relief
Thermal Relief Valve
Easy Start Valve
▪ Relieves pressure during starting
 
 
 
 
 
 
 
▪ Allows cool water to enter the pump if the
head temp reaches 145º
 
 
3/8” Side Discharge
1/2” End Discharge
3/8” End Discharge  
▪ Fully adjustable
▪ Rated up to 6,000 PSI
▪ Handles up to 12 GPM
▪ Rated to 195ºF
 
 
 
 
Premium Relief Valve, 3/8” MPT
Relief Valve, 3/8 W/Barb
Unloader By-pass Hose
Set-up & Test Tools
Mounting Blocks
▪ Take the load off the pump head by remote
mounting the unloader.
3/8” FPT x 3/8” FPT
3/8” FPT x 3/8” FPT
Use with YU-2140 and AU-2848
Use with YU-2140 and AU-2848
▪ This 800 PSI hose is the recommended hose
for by-pass the water back to a water tank
(open loop) or back to the inlet side of the
unloader (closed loop)
 
 
 
 
3/8” by-pass hose
1/2” by-pass hose
Unloader-VB10-2013.tif
EasyStartValve-2012.jpg
ThermalBrass.tif
ThermalReliefEnd-Disc-2012.jpg
Safety-Relief-Valve-cmyk.tif
Mounting-Blk-GP-2014.tif
You will not be able to set-up or adjust an
unloader unless you have the proper tools.

Gauge: Always use a gauge rated at least 1.5
times the operating pressure of the pump. 6,000
PSI Gauge
#1132 / 10,000 PSI #1133

Tachometer:  Always make sure the pump is
running at the proper speed.  The only way you
can do this is to make sure the engine is running
at 3,600 rpm.  Out Tiny Tachs can be attached
in less that 15 seconds!
#1429
Hose_LP2010 Copy.tif