Author: Craig Schuster

33952 Valve Repair Kit from CAT Pumps.

Order two of the CAT 33952 Pumps Repair Kit Online.

This valve repair kit 33952 is the all inclusive kit you will need to repair the valve end of your CAT Pump models 2530, 2530E, 2531 and 2537.  The 33952 has everything to repair three of your pumps six valves.  If you wish to replace all the valves on one of these models you will need to purchase two of these kits, and that is the recommend procedure.  If your CAT Pump was manufactured before November of 1995 you will need six of these kits.  The 33952 valve repair kit has elements made for the best plastic, stainless steel and rubber to ensure long life of the valve end of your pump for years to come.

This 33952 repair kit comes with all elements that can be seen on your pumps breakdown or by looking at the photos below.  The location item numbers included in this kit are 143,154,155,164,165,166,167 & 168.

If you prefer to reprint your pumps breakdown or service manual and work of of that for this CAT 33952 Pumps repair kit you can do so by clicking the links here: Parts Breakdowns for 2530, 2530E, 2531 and 2537,  for the 25PFR plunger style pump service manual click here.

If, even after reading all this information, and looking at your specific pumps breakdown and service manual, you still need some help determining if the 33952 is the correct kit for your repair, please give us a call and we will be happy to help you in determining which valve kit you need. 1-877-824-7763 {Smart Phones Click to Call}

Remember you will need two of these kits to repair all 6 valves on your CAT Pump, which is the recommend procedure when fixing this end of your unit.

Order two of the CAT 33952 Pumps Repair Kit Online.

34235 Valve Kit from CAT Pumps.

Order the 34235 Valve Repair Kit online.

Maintaining high-pressure pumps doesn’t have to be complicated or time-consuming — especially when you have the right parts on hand. For those using CAT Pumps in commercial or industrial applications, the CAT Pumps 34235 Valve Kit is a must-have for ensuring long-lasting performance and preventing costly downtime.

What is the CAT 34235 Valve Kit?

This OEM repair kit is specifically designed for a range of CAT Pump models, including:

• 3535

• 3520

• 35

• 203

• 535

It includes everything you need to replace three valves per kit (two kits are required for a complete pump rebuild). Whether you’re dealing with decreased performance, pressure loss, or leaks, this kit can help restore your pump to like-new condition.

Why Routine Valve Maintenance Matters

Pump valves are critical components in regulating flow and pressure within your pump system. Over time, these valves wear down due to normal use, exposure to chemicals, or contamination in the water. Faulty or worn valves can lead to:

• Inefficient performance

• Leaking seals

• Increased energy use

• Unplanned downtime

That’s why routine valve inspection and replacement is recommended as part of any proactive maintenance plan. Using the CAT 34235 Valve Kit ensures your system is operating at peak efficiency with OEM-quality parts designed to meet the demands of high-pressure environments.

What’s Included in the Kit?

Each 34235 Valve Kit includes replacement parts for key valve components identified in CAT’s parts breakdown, including:

• Valve assemblies

• O-rings

• Retainers

• Springs

These are all matched to factory specifications and tested for durability and proper sealing under pressure. All components correspond to breakdown positions: 162, 163, 164, 166, 167, 168, 170, 172, and 173.

💡 Pro Tip: You’ll need two kits per pump to replace all six valve positions.

Benefits of Choosing OEM Parts

When it comes to high-performance pump systems, OEM (Original Equipment Manufacturer) parts make all the difference. Here’s why:

• Exact fit: No guesswork or compatibility issues.

• Longer lifespan: Engineered for the same durability as your original parts.

• Reduced risk of failure: OEM parts maintain system integrity.

• Faster repairs: All parts are pre-packed and labeled for quick installation.

Aftermarket kits may seem more affordable at first glance, but poor materials or mismatched specs can end up costing far more in the long run.

Fast, Reliable Shipping from ShopEtsOnline

At ShopEtsOnline.com, we carry the CAT Pumps 34235 Valve Kit in stock and ready to ship — typically within 1 to 7 business days. Plus, our customer service team is always available to help you identify the right kit, find pump manuals, or assist with bulk orders.

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Final Thoughts

If you’re running a CAT Pump model 3535, 3520, 203, or similar, the 34235 Valve Kit is one of the most cost-effective ways to extend the life of your equipment. Don’t wait for a failure — keep your system running clean and efficient with scheduled maintenance and quality OEM parts.

👉

Order the 34235 Valve Repair Kit online.

Items included in the 34235 CAT Pumps Valve Repair Kit:

• This kit contains* all of the items on the breakdown in positions 162,163,164,166,167,168,170,172 & 173 (*see breakdown for part numbers)

CAT Pumps are one of the most reliable and well built pumps on the market today, but even they need some TLC from time to time.  The valve repair is one of the most common of this type up tune up and can be easily completed by a repair shop or even the pumps owner with this state of the art valve repair kit numbered 34235.  If you need to see the location of this kit on a manual for your pump, find your pumps breakdown on our CAT Manuals page and then give us a call.

Having trouble determining if this is the correct valve repair kit for the pump you own?  Not a problem, give one of our CAT Pump Specialists a call and we will help you get the right kit for your needs.

1-877-824-7763 {Smart Phones Click to Call}

If your sure this is the correct kit, please order two of them from the link below to repair all six valves on your CAT Pump.

Order the 34235 Valve Repair Kit online.

33623 Hi Temp Seal kit from CAT Pumps.

Order the Hi Temp Seal Kit 33623 from CAT Pumps online.

This 33623 is a high temperature seal repair kit from CAT Pumps, made to increase the temperature of the pumping liquid over the normal working temps of their pumps.  The 33623 is for pumps 310, 340 and 350.  All the items in this hi temperature seal kit are made from the finest rubber and plastic, and have been heat tested to be sure that they will stand up to the high temperatures you will be running through your machine with this seal kit installed.  This state of the art kit from CAT is the first thing you will need to use to change up the seals when working at temperatures about 140 degrees F.

 

The items in this 33623 hi temp seal kit from CAT Pumps are:

• A quantity of three of the part number 46667 the HPS w/S-HT
• Three of the item numbered 43305 which is the LPS w/S SPG NBR
• The 14200 which is the o-ring seal case 70 NBR in a quantity of three.
• A set of item number 17399 the o-ring plunger retainer 80 NBR also in a quantity of three.
• Three of the 43302 wick.

We are ETS Company understand CAT Pumps and there workings, and recommend this kit for the pumps listed above when you think you might go over 135 degrees with your cleaning liquid.  If you don’t see your pump listed above, as using this repair kit, please find your pumps breakdown on our CAT Pumps Manuals page to determine if this is the correct kit for your unit.  Click here to go to our CAT Pumps Breakdown Page.

Still not sure if this repair kit is the correct item for you, give us a call and we will be happy to assist you in determining the correct high temperature kit for your specific pump.
1-877-824-7763 {Smart Phones Click to Call}

Or you can order this kit directly online from the link below.

Order the Hi Temp Seal Kit 33623 from CAT Pumps online.

30623 Seal Repair Kit from CAT Pumps

Order the 30623 Seal Repair Kit from CAT Pumps.

The 30623 is a very common seal repair kit for the following CAT Pump models the 30, 31, 34, 35, 310, 340 & 350.  This repair kit the 30623 comes with all the seals, spacers and other parts needed to repair this end of your pump.  All the items in this kit can be found on your pumps breakdown, but for ease of identification we will list all breakdown part location numbers here for you, they are in locations 97,101,106,121 and 125.  Please be sure to verify this with your pumps breakdown located elsewhere in this blog.  All of the items in this seal repair kit are made from the best rubber and plastic that CAT Pumps can acquire, to ensure the tightest and most leak proof seals for your pump and machine.

The items numbered 97,101,106,121,125 from the 30623 breakdown are:

 

• Three of the o-ring plunger retainer.
• The long tab wick in a quantity of three.
• Three Seals,  that are identified as LPS w/S-Spg.
• Seal case o-ring in a quantity of three.
• HPS w/S which is another seal and also in a quantity of three.

You can find breakdowns for your specific pump and see where the 30623 seal repair kit is used, by clicking one of the following units: 30, 31, 34, 35, 310, 340 and the 350.  As always verify with your models breakdown before you purchase kits to be sure you are getting the correct repair for your machine.  If even after you have checked your manual or breakdown and are still  not sure of what kit you need, please give one of our CAT Pump Specialists a call and we will help you determine the best repair kit for your needs.  Call 1-877-824-7763 {Smart Phones Click to Call}

When you are looking for a new pump or to repair an already owned one, you have a lot of choices, and CAT Pumps is one of the best.  Like CAT Pumps we have been in the pressure washer industry business for over 30 years and have the knowledge and expertise to stand behind what we sell.  The big box stores can’t claim that.  So when your ready to repair your seals order this kit from us by clicking the link below.

Order the 30623 Seal Repair Kit from CAT Pumps.

 

30821 Valve Kit from CAT Pumps

Order the 30821 valve kit from CAT Pumps Online.

The 30821 is the valve repair kit needed to fix your 310, 340, 350, 5CP2120W, 5CP2140WCS or 5CP2150W pump.  This 30821 comes with three complete valves assembled and you will need 2 kits to fix all the valves on one of these pumps.  As with all CAT Pump repair kits this one is made to last with the finest metal, plastic and rubber elements that could be purchased to manufacture these items.  These all combine to give not only your machine and pump a longer work life, but also help in the water tightness of the valve end of your pump.

 

The items in this 30821 Valve Repair kit can be seen on the Parts Breakdown by clicking here, or looking at the diagram and photos below.  Per the manual this kit includes part numbers on the diagram of 162-164,166-168,172.

Here is the actual listing of parts for these pumps remember that this kit contains items 162-164,166-168,172.

For ease of understanding we have included all the items here for you as well in this 30821 kit:

• Three of the Back-Up Ring, Seat  part number 48361.
• A set of three O-Ring, Seat -70D  numbered 43358.
• Three of the Seat  item number 43725.
• Valve part number 43723 in a quantity of three.
• The Spring Valves item number 43750.
• O-Ring, Valve Plug  numbered 44565.

After looking over all of the above information about this repair kit, if you are still not sure if this is the correct kit for your needs, or you are not sure if you will need to replace all the valves or just a few, give us a call and we will help you determine the best repair for your situation.  Call 1-877-824-7763 {Smart Phones Click to Call}

You can also order this kit online by clicking the link below.  Please remember that if you are replacing all the valves on your pump you will need to order two of this item.

Order the 30821 valve kit from CAT Pumps Online.

31775 Valve Kit from CAT Pumps

Order the 31775 Valve Repair Kit from CAT Pumps.

The 31775 valve repair kit is made for the following CAT Pumps: 1540,1540E and 1540EC.  If you are trying to repair any of these CAT Pumps you will need two of this 31755 repair kit.  This kit has solid stainless steel spacers as well and the best made rubberized o-rings, giving your superior leakage protection as well as longer life than those repair kits that use plastic for the material in their spacers.  The valves on this 31775 kit come completely assembled for you, with the best metal springs and bearings as well has the best plastic that can be purchased for the construction of the outer part of the valve.  Use two of these  OEM kits and your CAT Pumps valve end will last you a lifetime.

Included in this 31577 Kit are the following parts:

• Complete valves assembled valves in a quantity of three.
• Three rubberized o-ring settings.
• Stainless steel spacers times three.

This kit is used on the following CAT Pumps, and if you need the parts breakdown that came with your unit you can print that off by clicking the pump you have.  The units are the 1540,1540E and 1540EC.  Not sure if this kit will work on other CAT Pumps you own?  Find your units exploded parts view by clicking here to determine if this 31755 valve repair kit will work on your Pump.

As always we stand by all our OEM kits for CAT and other pump manufacturers.  Give us a call and we will be happy to assist you in figuring out which valve kit is right for your make and model pump. 1-877-824-7763

Or you can order two of these units to totally repair the valve end of your CAT pump by clicking the link below.

Order the 31775 Valve Repair Kit from CAT Pumps.