6701 Garden Rd. Unit 3
Riviera Beach, FL 33404 USA
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Local: (561) 741-7022
High Pressure Pumps
Browse our large variety of industrial rated COMET Pumps for pressure washers and Kits. Built in Italy, most of the models come with a 5-year warranty. Comet pumps are an excellent replacement pump for most pressure washers and have a fast changeover, even in the field. Most pumps have a reversible crankcase for right or left hand mounting, and are always pre-plumbed and pre-tested.
Our high pressure pumps will come as "plumbed pumps". They come with the unloader, garden hose fitting, pressure hose fitting and thermal relief valve
Check more about pump technical information.
Determining Right or Left Hand Shafts
Face the pump manifold when determining shaft position
Left Handed
Right Handed
Left Handed
Right Handed
COMET High Pressure Pumps
BXD Series
Comet BXD series axial radial pressure washer pumps are standard oem replacement pumps on many brands. Every BXD Series pump comes standard with chemical injectors and stainless steel plungers. These pressure pumps are made direct-drive for gas and electric pressure pumps.
Features:
- Built in one piece Unloader
- Stainless steel unitized check valves
- Forged brass manifolds
- Double sealing Buna packing
- Built in garden hose adapter
- Direct Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.088B | BXD2020E | 2000 | 2.0 | 1.5-2 | 3400 | 5/8" | Electric | $392.80 |
| 85.149.081B | BXD2528G | 2800 | 2.5 | 5-6.5 | 3400 | 3/4" | Gas | $242.90 |
BWD Series
BWD Series are commercial grade Comet triplex pump with oil sight glass and oil drain plug.
Features:
- 2000 PSI Max Pressure (138 BAR)
- Includes QC Coupler, Garden Hose, and Chemical Injector
- Direct Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.085B | BWDK3027G | 2700 | 3.0 | 6.5 | 3400 | 3/4" | Gas | $380.20 |
Download Specs and Diagram (BW series)
LWS Series
The LWS Series Pressure Pump is made belt-drive for a gas powered motor. With a reversible anodized, die-cast aluminum crankcase, the LWS3025S can be fitted for a left or right hand mounting. These pumps come standard with ceramic plungers and stainless steel check valves and piston guides.
Features:
- 1750 RPM
- 24MM Solid Keyed Shaft
- 1/2” FPT Inlet, 3/8” FPT Discharge
- Belt-Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.065B | LWS3025S | 2500 | 3.0 | 6.5 | 1750 | 24MM | Gas | $445.25 |
ZWD Series
Comet ZWD direct drive series pumps are for all heavy duty commercial pressure washing applications. ZWD Direct-Drive pumps couple to all standard one inch gasoline engine shafts. Each ZWD pump comes standard with an enlarged crankcase to increase oil capacity for better lubrication and lower operating temperatures, and is reversible for right or left hand mounting.
Features:
- High efficiency stainless steel check valves
- One piece industrial oversized bronze connecting rods
- Direct-Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 6820 | ZWD3030G | 3000 | 3.0 | 9 | 3400 | 1" | Gas | $413.00 |
| 85.149.022B | ZWD4040G | 4000 | 4.0 | 13 | 3400 | 1" | Gas | $465.90 |
| 85.149.075B | ZWDK4036G | 3600 | 4.0 | 13 | 3400 | 1" | Gas | $413.00 |
Download Specs and Diagram (ZWD series)
HW Series
The HW and Series is a standard oem replacement pump for many popular pressure washer brands.
Features:
- Special high and low pressure seals with Buna V packing
- Solid ceramic plungers
- High quality ball bearings
- Forged bronze connecting rods
- Unloader valve is Pump Mounted on HW Series
- By Pass Hoses
- Inline Filter
- 3/8" Fittings
- Belt Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.031AB | HW3540S | 4000 | 3.5 | 11-13 | 1450 | 24mm | Gas | $719.15 |
Download Specs and Diagram (HWS series)
TW Series
The TW Series is made for max stress for all your tough jobs. TW pressure pumps have a 24mm solid shaft for belt-drive, gear box, or flex couplers made for gas powered motors. Each pump has a. The TW Series pump features Die-Cast Aluminum Alloy crankcase that is not only made to protect against rust and corrosion, but is also oversized designed to dissipate heat and improves lubrication for a long life.
Features:
- Heat treated stainless steel piston guides
- Stainless Steel check valves
- Ceramic Plungers
- Brass Manifold
- External Unloader Valve
- Belt Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.059B | TW5050 | 5000 | 5 | 24 | 1450 | 24mm | Gas | $1,324.40 |
TW Series with Gear Box
Features:
- Pump Mounted Unloader Valve
- Direct Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.059GB | TW5050 | 5000 | 5 | 24 | 1450 | 24mm | Gas | $1,232.00 |
FW Series
High quality tapered roller bearings, iodized aluminum crankcase and stainless steel piston guides help build the strength of this "work horse". Every FWS Series pump is equipped with a reversible anodized, die-cast aluminum crankcase that can be used either left or right hand mounted.
Features:
- 1/2" FPT Inlet, 3/8" FPT Discharge
- Solid Ceramic Plungers
- Stainless Steel Check Valves and Piston Guides
- Oversized Bronze Connecting Rods
- Buna-Textile V-Packing
- 184T Electric Motor Flange with 1-1/8" Hollow Shaft
- Direct Drive
| SKU # | MODEL | PSI | GPM | HP | RPM | SHAFT | MOTOR | PRICE |
| 85.149.017B | FWS23530E | 3000 | 3.5 | 5 - 7.5 | 1750 | 1-1/8" | Electric | $564.30 |
| BN-2999 | FWS4030E | 3000 | 4.0 | 10 | 1750 | 1-1/8" | Electric | $720.85 |
| 85.149.033B | FWS24530E | 3000 | 4.5 | 10 | 1750 | 1-1/8" | Electric | $688.75 |
Download Specs and Diagram (FW series)
COMET Pump Repair Kit Chart
If you are not sure on the part you need for your COMET pressure washer pump, please refer to the COMET pump breakdown diagrams located near each pump. If you still need further support, please send us an e-mail to info@ultimatewasher.com with your COMET pump model number and the part that you need.
| PUMP MODEL | SEAL KITS | VALVE KITS | OIL CAPS | UNLOADER | PISTON |
|---|---|---|---|---|---|
| BXD2020E | 5019066700 | 5025001400 | 3200008600 | ||
| BXD2528G | 5019066700 | 5025001400 | 3200008600 | ||
| BWDK2020E | 5019068400 | UW11-PW3251 | CALL | ||
| BWDK3027G | 5019068400 | UW11-PW3251 | CALL | ||
| LWS3025 | 5019003700 | KIT001 | UW11-PW3251 | 85.300.003 | |
| AWDK4036 | 5112 | UW11-PW3251 | CALL | ||
| ZWDK4036G | 5019006400 | KIT001 | UW11-PW3251 | 0202002000 | |
| ZWD4040G | 5019006400 | KIT001 | UW11-PW3251 | 85.300.207 | 0202002000 |
| HW3540S | KIT001 | UW11-PW3251 | 85.300.207 | 0202002000 | |
| HWS3540S | KIT001 | UW11-PW3251 | 0202002000 | ||
| HWS5040S | KIT001 | UW11-PW3251 | AL607EZ | 0202002000 | |
| TW8030 | 5019064600 | 5025002100 | 3200007500 | 0202004300 | |
| TW10025 | 5025002100 | 3200007500 | |||
| TW5050 | 5019064500 | 5025002100 | 3200007500 | 0202004200 | |
| LWDK SERIES | 5019003500 | KIT001 | UW11-PW3251 | 0202002000 | |
| FWS3530E | 5019003800 | KIT001 | UW11-PW3251 | 0202002200 | |
| FWS4030E | 5019003800 | KIT001 | UW11-PW3251 | 0202002200 |
Seal Kits
| KIT # | PUMP MODEL | PRICE |
| 5019066700 | BXD2020E, BXD2528G | $70.00 |
| 5019003700 | LWS3025 | $80.00 |
| 5019006400 | ZWDK4036G, ZWD4040G | $92.00 |
| 5019006500 | ZWD2530G, ZWD3030G, ZWD4030G, ZWD4040G, ZWDK3030, ZWDK4036, ZWDK4040 |
$50.00 |
| 5019064600 | TW8030 | $183.60 |
| 5019064500 | TW5050 | $181.80 |
| 5019003500 | LWDK Series | $82.00 |
| 5019068400 | BWDK Series | $80.00 |
| 5019003800 | FWS3530E, FWS4030E | $158.00 |
Valve Kits
| KIT # | PUMP MODEL | PRICE |
| 5025001400 | BXD2020E, BXD2528G | $68.00 |
| KIT001 | LWS3025, ZWDK4036G, ZWD4040G, HW3540S, HWS3540S, HWS5040S, FWS3530E, FWS4030E, LWDK Series | $51.30 |
| 5025002100 | TW8030, TW10025, TW5050 | $166.00 |
| 5112 | Valve Kit | $74.25 |
Oil Caps
| PART # | DESCRIPTION | PRICE |
| UW11-PW3251 | Oil Cap with Dipstick | $7.85 |
Pump Technical Information
Correct Pump Installation is essential for optimum performance.
It is recommended that the pump flow capacity be oversized for the actual flow required. For optimum running of the system the water circulated through the regulating valve should not exceed 10 - 15% of the pump flow. Recirculating too much water can generate heat in the supply tank increasing the cavitation risk.
Frequently Asked Questions
- How much should you reduce the pump RPM to achieve a lower flow capacity?
-
Required RPM = Expected capacity X Max RPM allowed Max allowed capacity
- What diameter of pulley must I use to achieve the correct pump RPM?
-
External diameter of the engine / motor pulley = External diameter of the pump pulley X RPM pump RPM motor/engine
- What if I cannot change the engine / motor pulley?
-
External diameter of the pump pulley = External diameter engine / motor pulley X RPM engine / motor Pump RPM
- If the engine / motor is running at a lower RPM than the maximum pump RPM allowed, what will be the pump flow capacity?
-
Attainable maximum capacity - Engine / Motor RPM X Max. capacity indicated on the label Max RPM indicated on the label
- What is the approximate power required to achieve the max. performances allowed?
-
Required electric motor HP PSI x GPM = Electric Motor HP 1460 Required gas engine HP PSI x GPM X 1.30 = Gas Engine HP 1460
Conditions to prevent pump cavitation: Minimum difference in height HZ (pos/neg) between pump and water level.
The minimum inlet pressure value of the pump is limited by the cavitation phenomenon. Cavitation is the forming of vapor bubble when the local pressure is below the vapor pressure of the liquid. Bubbles flow together with the liquid and when they reach a higher pressure area, they collide, generating abnormal stresses that are extremely dangerous to the pump components.
To avoid the risk of cavitation, it is necessary that the pump installation is correct.
Pump Kits and Accessories
For more information about seal and valve kits,
contact us at Toll Free 866-858-4982
Please call to place an order.
Anti-freeze Bottle
Car wash ceiling booms and wall booms are available in different sizes and designs that will fit your application. These booms can rotate 360° rotation for the user. You can add wall boom extensions for a bus or truck wash.
Power Washer Engines
Briggs & Stratton make the finest engines worldwide for the brands you have come to trust. Look up here all the features, benefits, specifications, and other info.
Pump Care
Helpful Tips to keep your pump in tip-top shape
- To prevent freezing use Environmentally Friendly or R.V. Antifreeze. (Always use for winter storage.)
- Change oil every 3-5 months or every 500 hours of operation (initial break-in oil change after first fifty hours).
- Flush water valves and detergent injectors with plain water on a regular basis after use.
- Use Line Strainer, 50 mesh minimum.
- Never store pump with water in it.
- Consult with us for chemical use.