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Pump Check Valve

Pump Check Valve

Part Number: 4.580-330.0
Karcher
Availability: 25+ in stock
Price: $8.44
Ships within 1 business day

*This part replaces obsolete part #: and 060-080.

Product Information
Manufacturer: Karcher
Product Number: 4.580-330.0
Classification: Part
Weight: 0.01 lbs.
Also Known As: Reflux Valve, Non-Return Valve, One-Way Valve, Retention Valve, Rotary Valve, Rotator Valve, Duck Bill, Suction Valve
Shipping: Ships Worldwide
Description:
Genuine Karcher replacement part, it is sold individually.
This part along with the piston controls the flow of water through the pump assembly.
This part has a tendency to wear out.
It may be wise to keep a few extra on hand.
Products Compatibility

This item works with the following types of products:

  • • Pressure Washer
Questions & Answers

I am getting good pressure through the pump but when I release the trigger and cause water pressure to build up inside pump, the motor chokes down. Do I need a pump or is there a valve that can be replaced to solve the problem. This has been a very good machine.It has a 9.0 HP Honda engine. I have to keep water pressure off when I start it by holding the trigger open.
Allen Bailey for model number K Archer H D 3000 Pro Line asked on 2019-07-08
Hello Allen, thank you for writing. For this symptom you will want to replace the Pressure Check Valve Set part 2.884-916.0 for your model. We hope this helps.
The part number, 4.580-330.0 came from my Karcher model K2400HH catalog. It is very important for me to have the exact parts for my pressure washer. I need to know if this part will fit my pump. Thanks.
Art for model number K 2400 HH asked on 2019-08-20
Hello Art, Thanks for your question! Yes, this is the compatible pump check valve for your model. We hope this helps!
No pressure. have replaced the unloader valve. Still no pressure. Before the pressure gave out, the washer would pulse, especially when first started. i thought it was air in the line.
bill for model number Karcher g2000 QT asked on 2019-07-28
Hello Bill and thank you for writing Parts that fix "No pressure" Hope this helps 67% of time Unloader Valve Part # 4.591-040.0 8% of time Unloader Valve Pump Check Valve Part # 4.580-330.0 5% of time Pump Check Valve Pressure Spring Part # 5.332-391.0 Part # 6.288-050.0 2% of time Pump Oil Oil Sealing Part # 6.365-393.0
the pump started leaking after a below freezing night in the garage; is this likely the part needed to fix the leak? thanks
Dennis for model number Karcher 2400 HH asked on 2020-03-04
Hello and thank you for writing. It could be a leaky unloader valve # 4.591-040.0 or possibly a damaged grooved ring # 6.365-394.0 you should check the part(s) for signs of damage, and replace the part(s) as needed. We hope this helps. Please contact us anytime if you require further assistance.
My pump is leaking badly from hole at bottom of pump. Is this check valve likely cause
Ed for model number G2650hh asked on 2019-10-31
Hello Ed, thank you for inquiring. You will want to consider replacing either the Unloader Valve, part number 4.591-040.0, or the Pump Check Valve, part number 4.580-330.0 for your pressure washer. Good luck with your repair!
Repair Instructions: Submitted by Customers Like You
3 of 3 people found this instruction helpful
Tool Type:
Pressure Washer
Parts Used:
Pump Check Valve - 4.580-330.0
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Pliers, Socket set
No pressure
Your you tube videos that I watched were very informative. And now my pressure washer is like new. Thank you! I made copies of the videos so you can view them.

https://www.youtube.com/watch?v=Qmrhgq22ASI

https://www.youtube.com/watch?v=q2c2uUlP13s

Did you find this story helpful?
Thanks for voting and helping fellow customers!
1 of 1 people found this instruction helpful
Tool Type:
Pressure Washer
Parts Used:
Grooved Ring - 6.365-394.0
Pump Check Valve - 4.580-330.0
Pressure Spring - 5.332-391.0
Oil Sealing - 6.365-393.0
Pump Oil - 6.288-050.0
Pressure Check Valve Set - 2.884-916.0
Repair Difficulty:
Medium
Time Spent Repairing:
More than 2 hours
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set
Pressure washer pressure pulsing very fast with high pressure
1. Purchased all most likely parts likely to cause problem: valves, seals & springs.
2. Disassembled pump. No oil in wobble plate housing - only some water. (Probably piston seal?)
3. Cleaned housings, reused parts with carb cleaner. Added 15-40w oil. Reassembled & installed.
4. Works better than when I bought it, (was rebuilt unit.)
5. I found seals a little tricky to install as they are flared out & you'll probably try to use a screwdriver to install - careful, easy to damage seal.
6.Also, check the spill valve before you remove pump - it can cause erratic (as well as low) pressure.
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Tool Type:
Pressure Washer
Parts Used:
Grooved Ring - 6.365-394.0
Pump Check Valve - 4.580-330.0
Oil Sealing - 6.365-393.0
Repair Difficulty:
Medium
Time Spent Repairing:
1-2 hours
Tools Used:
Screwdriver, Wrench Set
rapid pulsation
found 1 bad check valve
replaced all 3 check valves
replaced all 3 oil seal rings
replaced all 3 grooved rings (lip side out using a small screwdriver to get it in)
cleaned swash plate and bearings
put new oil (karcher 15 w 40 )
reassembled
cleaned and lubed unloader valve
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Thanks for voting and helping fellow customers!
Tool Type:
Pressure Washer
Parts Used:
Pump Check Valve - 4.580-330.0
Pump Oil - 6.288-050.0
Pressure Check Valve Set - 2.884-916.0
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
Pump did did not provide consistant pressure. It pulsed'
Researched problem via internet.
Viewed repair of problem via You Tube
Ordered parts.
Repaired as per You Tube video.
Disassembled pump.
Removed all internal parts
Cleaned pump castings
Replaced parts
Replaced pump oil
Reassembled
Success
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Pressure Washer
Parts Used:
Pump Check Valve - 4.580-330.0
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Pliers, Socket set
Quit pumping high pressure water.
Followed the video online.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Pressure Washer
Parts Used:
Pump Check Valve - 4.580-330.0
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Socket set, Wrench Set
Pressure washer would not develop pressure.
Replaced check valves.
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Thanks for voting and helping fellow customers!
Tool Type:
Pressure Washer
Parts Used:
O-ring - 6.362-384.0
Pump Check Valve - 4.580-330.0
Repair Difficulty:
Easy
Time Spent Repairing:
More than 2 hours
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set, O-ring pick
Pump was cycling
Drained the engine oil first since the machine had to be placed on its side.

Removed four bolts holding the pump together, separated the pump halves and drained the oil from the unit.

Removed the four Allen bolts holding the base to the engine.

Removed and replaced damaged valves and o-rings lubricated with petroleum jelly.

Filled reservoir with fresh oil and reattached pump halves to base, securing with four bolts.

Reinstalled pump assembly to engine with four Allen bolts.

Filled the engine with fresh oil.
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Thanks for voting and helping fellow customers!
Reviews
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Average Rating (out of 5):
5 Reviews
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  • Parts found - easy lookup
    Parts breakdown sheets made it easy to id all parts needed for water pump rebuild. Videos assisted with the actual rebuild
    Guest - May 11, 2020 Verified Purchase
    Great deal
    Problem fixed
    Guest - April 24, 2020 Verified Purchase
    Quality Replacement Part with Perfect Fit
    I found this company when doing a Youtube search for ideas on repairing my Karcher pressure washer. They had a repair video with the exact model I had. The video was very helpful and the parts I ordered from them fit perfectly and made of quality materials. The parts shipped quickly. I would order from them again. Regards, Chris
    Guest - April 21, 2020 Verified Purchase
    Pressure Washer parts
    The parts arrived quickly and fit perfectly. I appreciate the diagrams of the parts on your website.
    Guest - September 12, 2019 Verified Purchase
    The right parts
    This was my first pressure washer pump rebuild . Eparts not only had the right parts .There is a tutorial video and suggestion on possible problems . The parts arrived quick and rebuild went well
    Guest - July 16, 2019 Verified Purchase
    Verified Purchase
    eReplacementParts Team
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    Product Information
    Manufacturer: Karcher
    Product Number: 4.580-330.0
    Classification: Part
    Weight: 0.01 lbs.
    Also Known As: Reflux Valve, Non-Return Valve, One-Way Valve, Retention Valve, Rotary Valve, Rotator Valve, Duck Bill, Suction Valve
    Shipping: Ships Worldwide
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