Log In
Log In
×
E-mail
Password
Sign In
New around here? Sign up
Forgot password?
1-800-491-3850
8 A.M. - 5 P.M. CST
sales@pressure-washer-parts.com
Pumps
Pressure Washer Replacement Pumps and Pump Repair Parts
Pumps by Brand
General Pump
Annovi Reverberi (AR)
Cat Pumps
Comet
Giant Industries
Pumps by Drive Type
Solid Shaft (Belt, Clutch or Gearbox)
Gasoline Engine (Direct Mount)
Electric Motor (Direct Mount)
Complete Pump Assembly Kits
Annovi Reverberi (AR)
General Pump
Machine Coolant Pumps
Pump Accessories
Jetter Valves
Oil Drain Hoses
Mounting Rails
Shaft Protectors
Pump Oil and Repair Tools
Pump Oil
Packing Extractors
Slide Hammer Kits
Looking for Repair Kits?
Find OEM kits and parts for your pump by locating it in the lists from this menu, or search by pump model or kit number in the search box at the top of our site!
Unloader Valves
Pressure Washer Unloader Valves, Relief Valves, and Regulators
Unloader Valves by Brand
Annovi Reverberi (AR)
Cat Pumps
General Pump
Giant Industries
Hypro
J.E. Adams
MTM Hydro (Veloci)
Suttner
Unloader Valves by Type
Pressure Actuated Unloaders
Flow Actuated Unloaders
Direct-Mount Unloaders
Specialty Unloader Valves
Microswitch Unloaders
Multi-Gun Unloaders
Stainless Steel Unloaders
Unloader Mounting Blocks
Pressure Regulators
Safety Valves
Pressure Relief Valves
Thermal Relief Valves
Unloader Mounting Blocks
Prevent broken plumbing fittings and build a more serviceable machine with unloader mounting blocks from General Pump!
Hoses & Reels
Pressure Washer Hoses and Hose Reels
High Pressure Hoses
Black Hoses (Standard)
Blue Hoses (Non-Marking)
Grey Hoses (Non-Marking)
Light Duty Hoses
Jumper and Specialty Hoses
Jumper Hoses
Pulse Hoses
Sewer Hoses
Oil Drain Hoses
Low Pressure Hose
Water Hose
Chemical or Soap Hose
Hose Reels
Coxreels Hose Reels
General Pump Hose Reels
Hosetract Hose Reels
Reel Accessories
Hose Reel Swivels
Brass Swivels
Steel Swivels
Replacement Reel Swivels!
Revive your leaking hose reel with a replacement hose reel swivel, such as an American-made stainless steel swivel from Super Swivels!
Guns & Lances
Pressure Washer Spray Guns, Lances, and Wands
Trigger Guns by Brand
General Pump
Giant Industries
J.E. Adams
Mecline (AR Partnership)
Spraying Systems Co.
Suttner
Specialty Guns
Front Entry Guns
Linear Guns
Open Guns
Stainless Steel Guns
Weep Guns
Gun and Lance Combinations
Lances
Insulated Lances
Non-Insulated Lances
Dual Lances
Specialty Lances and Wands
Flexible Wands
Suttner Twin Turbo Lances
Telescoping Wands
Lance Accessories
Gutter Cleaner Attachments
Lance Side Handles
Nozzle Couplers and Protectors
Suttner ST-1500 Gun Sale!
Nozzles
Pressure Washer Spray Nozzles and Soap Nozzles
Spray Nozzles By Brand
General Pump
Spraying Systems Co.
Spray Nozzles By Type
Male Threaded Nozzles
Quick Disconnect Nozzles
Quick Disconnect Nozzle Packs
Soap Nozzles
Nozzle Couplers and Holders
Adjustable Nozzle Holders
Double Nozzle Holders
Nozzle Couplers (Threaded)
Nozzle Protectors (Threaded)
Turbo (Rotating) Spray Nozzles
Dirt Killer
General Pump
Giant Industries
Hydra-Flex
Suttner
High Pressure Inline Filters
Specialty Spray Nozzles
Gum Remover Nozzles
Hydro-Excavation Nozzles
Sand Blasting Kits
Sewer Cleaning Nozzles
Tank Cleaning Nozzles
Variable (High/Low) Nozzles
Fuel Nozzles
Hydro-Excavation Nozzles!
We carry Ripsaw and Switchblade hydro-excavation nozzles from Hydra-Flex. Dig faster, safer, and with less water using these superior nozzles engineered in the USA!
Accessories
Pressure Washer Accessories
Chemical Injectors
Adjustable Injectors
Fixed Injectors
Soap Metering Valves
Soap Hose
Soap Screens
Foam Products
Foam Cannons
Foam Lances
Foam Nozzles
Gauges
Pressure Gauges
Manometer Gauges
Temperature Gauges
Vacuum Gauges
Gauge Fittings
Specialty Attachments
Surface Cleaners
Duct Cleaners
Undercarriage Cleaners
Roof Cleaners
Manhole Cleaners
Rotor Arms
Swivels
Hose Reel Swivels
Live Gun Swivels
Mosmatic Swivels
Miscellaneous
Foot Actuated Valves
Pulsation Dampeners
Sand Blasting Kits
Sludge Pumps
Tires and Axles
Water Brooms
Work Smarter - Not Harder!
Free up both hands with a foot actuated valve from Suttner or General Pump! Ideal for sewer jetting or assembly line/conveyor cleaning stations.
Fittings & Plumbing
Pressure Washer Fittings and Plumbing Components
Quick Disconnect Fittings
General Pump
Foster
Hansen
Parker
Quick Disconnect O-rings
European and Specialty Fittings
European Twist Connect Fittings
High Strength Fittings
Lance Saver Plugs
Pressure Gauge Fittings
Inlet Filters and Fittings
Garden Hose Fittings
Inline Water Filters
Scaltrol Products
Soap and Tank Screens
Suction Restrictors
Valves
Ball Valves
Float Valves and Parts
Gate Valves
Metering Valves
Needle Valves
Pressure Relief Valves
Thermal Relief Valves
Miscellaneous
Pulsation Dampeners
Pipe Thread Locker
Pipe Thread Tape
Protect Your Investment...
... with an inline water filter! Extend the life of your pumps, valves, hoses, and nozzles by removing grit and debris with a filter from General Pump, Spraying Systems, or Hypro!
Electrical
Pressure Washer Electrical Switches, Controls, and Related Components
Switches
Float Switches
Flow Switches
Pressure Switches
Vacuum Switches
Momentary Contact Switches
Rocker and Toggle Switches
Rotary Cam Switches
Components
Circuit Breakers
Contactors and Coils
Ground Fault Interrupters
Indicator Lights
Relays
Terminal Blocks
Transformers
Controls and Timers
High Limit Controls
Temperature Controls
Thermostats
Timers
Hour Meters
Enclosures and Related
Battery Boxes
Battery Cables
Conduit and Connectors
Metal Enclosures
Miscellaneous
Generators
Vacuum Switches!
Great stocking stuffers! Also may be helpful if the burner on your hot water pressure washer no longer fires up.
Drive
Pressure Washer Engines, Motors, and Drive Components
Belt Drive Components
Belts
Bushings
Pulleys
Electric Clutches
Direct Drive Components
Gear Reducers
Flanges
Flex Couplers
Solid Couplers
Hydraulic Drive Components
Muncie Motors
Hydraulic Couplers
Hydraulic Flanges
Miscellaneous
Engine Throttle Control
Hour Meter / Tachometer
Electromagnetic Clutches
We have electric clutches for most makes and models of belt-driven pressure washer pumps! Ideal for carpet cleaning machines, hydro-excavation equipment, and pressure washer rental fleets.
Hot Water
Pressure Washer Burners and Related Components
Oil Fired Components
Oil Burners (Beckett & Wayne)
Blower Fans
Burner Motors
Fuel Nozzles
Fuel Pumps & Solenoids
Igniters and Transformers
Tune-up Kits
Gas Fired Components
Gas Burners (Solarflo)
Conversion Kits
Dampers (motorized)
Electronic Ignition
Gas Jets
Gas Valves and Actuators
Pilot Couples
Miscellaneous
Fuel Nozzle Filters
Immersion Heaters
Water Treatment
Scaltrol Products
Beckett & Wayne Burners!
We carry many standard oil burner configurations from R.W. Beckett and Wayne Combustion Systems, as well as burner components, fuel nozzles, and tune-up kits!
Filters ▾
Brand
Annovi Reverberi (AR)
Cat Pumps
General Pump
Giant Industries
Hypro
Show More
J.E. Adams
Suttner
Veloci
Show Less
Maximum Flow Rate
2.1 gpm
2.25 gpm
2.6 gpm
3 gpm
3.35 gpm
Show More
3.5 gpm
4 gpm
4.5 gpm
5 gpm
5.3 gpm
5.5 gpm
6 gpm
6.5 gpm
6.6 gpm
7.8 gpm
8 gpm
10.5 gpm
10.8 gpm
11 gpm
12 gpm
13 gpm
21 gpm
26 gpm
32 gpm
52 gpm
53 gpm
Show Less
Maximum Pressure
800 psi
1000 psi
1400 psi
1500 psi
2000 psi
Show More
2175 psi
2320 psi
2400 psi
2450 psi
2500 psi
2600 psi
3000 psi
3045 psi
3140 psi
3200 psi
3500 psi
3600 psi
3625 psi
3650 psi
4000 psi
4060 psi
4495 psi
4500 psi
5100 psi
5560 psi
5650 psi
6500 psi
8000 psi
8360 psi
Show Less
Rated Pressure
800 psi
1000 psi
1400 psi
1500 psi
2000 psi
Show More
2200 psi
2300 psi
2400 psi
2500 psi
2600 psi
3000 psi
3045 psi
3140 psi
3200 psi
3500 psi
3600 psi
3625 psi
3650 psi
4000 psi
4050 psi
4060 psi
4500 psi
5100 psi
5560 psi
5800 psi
7250 psi
8360 psi
Show Less
Unloader Type
Bolt On
Microswitch
Multi-Gun
Trapped Pressure
Spring Color
Black
Blue
Green
Orange
Red
Show More
Silver
White
Yellow
Show Less
Inlet Size
1/4 in (male)
3/8 in (female)
3/8 in (male)
1/2 in (female)
1/2 in (male)
1 in (female)
Show Less
Outlet Size
1/4 in (female)
1/4 in (male)
3/8 in (female)
3/8 in (male)
1/2 in (female)
Show More
22 mm
1 in (female)
Show Less
Bypass Size
1/4 in (barb)
1/4 in (female)
3/8 in (female)
3/8 in (male)
1/2 in (female)
Show More
1 in (female)
Internal
Sleeve
Show Less
Gauge Port
1/4 in (female)
Material
Brass
Brass and Aluminum
Nickel-Plated Brass
Stainless Steel
Maximum Fluid Temperature
140 degrees (F)
160 degrees (F)
165 degrees (F)
176 degrees (F)
180 degrees (F)
Show More
185 degrees (F)
190 degrees (F)
194 degrees (F)
195 degrees (F)
200 degrees (F)
Show Less
Country of Origin
Germany
Italy
United States
Unloader Mounting Blocks
Prevent broken plumbing fittings and build a more serviceable machine with unloader mounting blocks from General Pump!
Pressure Actuated (Trapped Pressure) Unloader Valves
84 Results
Sort Results
Popularity
Price: Low-High
Price: High-Low
Product: A-Z
Product: Z-A
GNT-33935
22082 Unloader Valve - 21 gpm 4060 psi - Blue Spring
Brand:
Giant Industries
Maximum Flow Rate:
21 gpm
Maximum Pressure:
4495 psi
$159.95
Add
GNT-33921
22760A Pressure Actuated Unloader - 8 gpm 3045 psi
Brand:
Giant Industries
Maximum Flow Rate:
8 gpm
Maximum Pressure:
3045 psi
$85.95
Add
GNT-33936
22910A Unloader Valve - 13 gpm 800 psi - Silver Spring
Brand:
Giant Industries
Maximum Flow Rate:
13 gpm
Maximum Pressure:
800 psi
$119.95
Add
GNT-33937
22911A Unloader Valve - 13 gpm 1400 psi - Yellow Spring
Brand:
Giant Industries
Maximum Flow Rate:
13 gpm
Maximum Pressure:
1400 psi
$119.95
Add
GNT-33938
22912A Unloader Valve - 13 gpm 2400 psi - Red Spring
Brand:
Giant Industries
Maximum Flow Rate:
13 gpm
Maximum Pressure:
2400 psi
$119.95
Add
GNT-33939
22913A Unloader Valve - 13 gpm 3500 psi - Orange Spring
Brand:
Giant Industries
Maximum Flow Rate:
13 gpm
Maximum Pressure:
3500 psi
$119.95
Add
GNT-33973
22949 Unloader Valve - 32 gpm 3200 psi
Brand:
Giant Industries
Maximum Flow Rate:
32 gpm
Maximum Pressure:
3200 psi
$1649.00
Add
GNT-33922
23710 Pressure Actuated Unloader - 6.6 gpm 3000 psi
Brand:
Giant Industries
Maximum Flow Rate:
6.6 gpm
Maximum Pressure:
3000 psi
$54.95
Add
GNT-33923
23710-1.8A Pressure Actuated Unloader - 2.6 gpm 3000 psi
Brand:
Giant Industries
Maximum Flow Rate:
2.6 gpm
Maximum Pressure:
3000 psi
$60.95
Add
GNT-33924
23710-2.1A Pressure Actuated Unloader - 4 gpm 3000 psi - 2.1 mm Injector
Brand:
Giant Industries
Maximum Flow Rate:
4 gpm
Maximum Pressure:
3000 psi
$60.95
Add
GNT-33925
23710-2.3A Pressure Actuated Unloader - 5.3 gpm 3000 psi - 2.3 mm Injector
Brand:
Giant Industries
Maximum Flow Rate:
5.3 gpm
Maximum Pressure:
3000 psi
$60.95
Add
GNT-33926
23720 Pressure Actuated Unloader - 6.6 gpm 4000 psi
Brand:
Giant Industries
Maximum Flow Rate:
6.6 gpm
Maximum Pressure:
4000 psi
$54.95
Add
1
2
3
4
5
…
>
>>
Showing 1 through 12 of 84 Items