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HOME > High Pressure Pumps

 

High Pressure Pumps


COMET High Pressure Pumps
CAT Pressure Washer Pump
GENERAL Pressure Washer Pump
       
       
High Pressure Pumps AR
GIANT Triplex Plunger Pumps
KRANZLE Pumps
Legacy 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

Hollow Shaft Pumps Solid Shaft Pumps
pressure washer pump
Left Handed
Pressure Washer Pumps

Right Handed
Giant Pump P200 Series
Left Handed
Annovi Riverbri Pump

Right Handed

 

COMET High Pressure Pumps

comet pump

 

 

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.

  • Built in one piece Unloader
  • Stainless steel unitized check valves
  • Forged brass manifolds
  • Double sealing Buna packing
  • Built in garden hose adapter
  • Direct Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
85.149.088B BXD2020E 2000 2.0 1.5-2 3400 5/8" Electric $201.80add to cart
85.149.081B BXD2528G 2800 2.5 5-6.5 3400 3/4" Gas $189.80add to cart
BWD Series Comet Pump

BWD Series

BWD Series are commercial grade Comet triplex pump with oil sight glass and oil drain plug.

  • 2000 PSI Max Pressure (138 BAR)
  • Includes QC Coupler, Garden Hose, and Chemical Injector
  • Direct Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
85.149.083B BWDK2020E 2000 2.2 2-3 3400 5/8" Electric $285.80add to cart
85.149.085B BWDK3027G 2700 3.0 6.5 3400 3/4" Gas $273.80add to cart



Comet Pump

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.

  • 1750 RPM
  • 24MM Solid Keyed Shaft
  • 1/2” FPT Inlet, 3/8” FPT Discharge
  • Belt-Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
85.149.065B LWS3025S 2500 3.0 6.5 1750 24MM Gas $398.40add to cart

 

Comet Pumps

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.

  • High efficiency stainless steel check valves
  • One piece industrial oversized bronze connecting rods
  • Direct-Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
6820 ZWD3030G 3000 3.0 9 3400 1" Gas $316.45add to cart
85.149.022B ZWD4040G 4000 4.0 13 3400 1" Gas $369.80add to cart
85.149.075B ZWDK4036G 3600 4.0 13 3400 1" Gas $333.80add to cart

Download Specs and Diagram (ZWD series)

 

Pressure Washer Comet Pump

HW & HWS Series

The HW and HWS Series is a standard oem replacement pump for many popular pressure washer brands. Comet HWS series pumps come with standard twenty four millimeter solid shafts and can be belt or gear driven. Each pump has an optimal anodized aluminum crankcase for high speed operation.

  • 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 and Block Mounted on HWS Series
  • By Pass Hoses
  • Inline Filter
  • 3/8" Fittings
  • Belt Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
85.149.031AB HW3540S 4000 3.5 11-13 1450 24mm Gas $489.80add to cart
85.149.031B HWS3540S 4000 3.5 11-13 1450 24mm Gas $513.80add to cart
85.149.030B HWS5040S 4000 5.3 20 1750 24mm Gas $599.80add to cart

Download Specs and Diagram (HWS series)

 

High Pressure Pumps

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.

  • Heat treated stainless steel piston guides
  • Stainless Steel check valves
  • Ceramic Plungers
  • Brass Manifold
  • External Unloader Valve
  • Belt Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
85.149.059B TW5050 2700 3.5 5-7.5 1450 24mm Gas $921.80add to cart
85.149.062B TW8030 3000 8.0 24 1450 24mm Gas $917.00add to cart

Download Specs and Diagram

 

Pump with Gear Box

TW Series with Gear Box

  • Pump Mounted Unloader Valve
  • Direct Drive

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
85.149.059GB TW5050 2700 3.5 5-7.5 1450 24mm Gas $1,137.80add to cart
85.149.062GB TW8030 3000 8.0 24 1450 24mm Gas $1,149.80add to cart

 

Comet Pump Series

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.

  • 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

Ordering Information - FREE SHIPPING

SKU # MODEL PSI GPM HP RPM SHAFT MOTOR PRICE
BN-2999 FWS4030E 3000 4.0 10 1750 1-1/8" Electric $569.40add to cart


Download Specs and Diagram (FWS series Part 1)
Download Specs and Diagram (FWS series Part 2)

 

Pump Warranty
COMET Pump Warranties
COMET Pump Repair Kit Chart


Please use the Comet Repair Chart Below to find the correct parts you need to repair all of your Comet Pressure Pumps. All Comet Pump repair kits contain the total elements necessary to rebuild the entire Comet pump. LW, ZW, FW, and HW Series Pumps consist of hot water seals only, and contain a hot water seal protection. Viton seals are chemically resistant. Pricing is listed below the 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   3200005100 CALL  
BWDK3027G 5019068400   3200005100 CALL  
LWS3025 5019003700 KIT001 3200005100 85.300.003
AWDK4036   5112 3200005100 CALL  
ZWDK4036G 5019006400 KIT001 3200005100   0202002000
ZWD4040G 5019006400 KIT001 3200005100 85.300.207 0202002000
HW3540S 5019063100 KIT001 3200005100 85.300.207 0202002000
HWS3540S 5019063100 KIT001 3200005100 0202002000
HWS5040S 5019063100 KIT001 3200005100 AL607EZ 0202002000
TW8030 5019064600 5025002100 3200007500   0202004300
TW10025   5025002100 3200007500    
TW5050 5019064500 5025002100 3200007500   0202004200
LWDK SERIES 5019003500 KIT001 3200005100   0202002000
FWS3530E 5019003800 KIT001 3200005100   0202002200
FWS4030E 5019003800 KIT001 3200005100   0202002200

 

Seal Kits

Seal Kits

KIT # PUMP MODEL PRICE
5019066700 BXD2020E, BXD2528G $42.40add to cart
5019003700 LWS3025 $51.80add to cart
5019006400 ZWDK4036G, ZWD4040G $54.90add to cart
5019063100 HW3540S, HWS3540S, HWS5040S $142.50add to cart
5019064600 TW8030 $130.50add to cart
5019064500 TW5050 $122.60add to cart
5019003500 LWDK Series $47.90add to cart
5019068400 BWDK Series $49.80add to cart
5019003800 FWS3530E, FWS4030E $35.90add to cart

 

Valve Kits

Valve Kits

KIT # PUMP MODEL PRICE
5025001400 BXD2020E, BXD2528G $41.00add to cart
KIT001 LWS3025, ZWDK4036G, ZWD4040G, HW3540S, HWS3540S, HWS5040S, FWS3530E, FWS4030E, LWDK Series $57.65add to cart
5025002100 TW8030, TW10025, TW5050 $101.50add to cart
5112 Valve Kit $60.00add to cart

 

Oil Cap
3200008600
Comet Oil Cap
3200007100
CAp for Comet Pump
3200005100

Oil Caps

KIT # PUMP MODEL PRICE
3200008600 BXD2020E, BXD2528G $7.20add to cart
3200005100 BWDK2020E, BWDK3027G, LWS3025, AWDK4036, ZWDK4036G, ZWD4040G, HW3540S, HWS3540S, HWS5040S, FWS3530E, FWS4030E, LWDK Series $6.60add to cart
3200007500 TW8030, TW10025, TW5050 $6.20add to cart
3200007100 TW8030, TW10025, TW5050 $7.50add to cart

 

 

Unloader Valves

KIT # PUMP MODEL PRICE
1215040200 BXD2020E $64.90add to cart
85.300.207 ZWD4040G, HW3540S $75.90add to cart
AL607EZ HWS5040S $64.75add to cart

 

 

Pistons

KIT # PUMP MODEL PRICE
0202002000 ZWDK4036G, ZWD4040G $48.90add to cart
0202004200 HW3540S, HWS3540S, HWS5040S, TW5050, LWDK Series $59.50add to cart
0202004300 TW8030 $89.90add to cart
0202002200 FWS3530E, FWS4030E $57.20add to cart

 

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

pump dip stick     pump anti-freezw


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

 

Hour Meters
hour meter


Pressure Washer Hour Meters
For gasoline pressure washers. Extremely rugged and durable. Sealed from dirt and moisture.

Power Washer Engines
briggs washer engines


Pressure 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
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.

 

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