Udor CKC 30/24 S 3/4" BSP-F 24mm 7.9GPM 3480PSI - 1254

High-Performance 7.9 GPM Pump for Demanding Cleaning and Spraying Jobs

The Udor CKC 30/24 S is a super-duty plunger pump designed for continuous high-pressure fluid delivery in the most demanding commercial and industrial environments. As part of Udor's proven CK series, this triplex plunger pump delivers a maximum flow rate of 7.9 GPM (30.0 L/min) at up to 3,480 PSI (240 bar), all while operating at a conservative 1,450 RPM - a sign of engineering focused on longevity rather than brute-force speed.

Built around a 24 mm keyed solid shaft ("S" designation), the CKC 30/24 S is purpose-built for professional pressure washing, industrial cleaning, sewer jetting, and agricultural spraying applications where uptime and reliability are non-negotiable. The low operating speed reduces mechanical stress across every moving component, delivering smoother performance and a longer service life compared to pumps rated at 1,750–3,400 RPM.

This pump requires 21.5 EBHP (Electric Brake Horsepower) and is compatible with both gas engine and electric motor drive systems when matched correctly for the 1,450 RPM operating speed. The inlet port is a ¾" BSP-F female connection, and the outlet is a ⅜" BSP-F female, making integration into most high-pressure systems straightforward.

Why You'll Love the Udor CKC 30/24 S Pump

Beyond the spec sheet, the CKC 30/24 S delivers tangible, day-to-day advantages that professional operators and system builders will appreciate immediately.

• Consistent Cleaning Power – With 7.9 GPM at up to 3,480 PSI, this pump generates the volume and impact needed for concrete restoration, fleet washing, heavy equipment cleaning, and large surface applications. The CKC series pumps are often used in demanding environments for water jetting and pressure-washing, and this model is no exception.

• Built for Long Service Life – The pump is designed with a heavy-duty brass manifold, and the construction allows it to handle high-pressure cycles without deforming under stress. At just 1,450 RPM, the design includes heavy-duty tapered roller bearings to minimize operational friction, reducing wear on the crankshaft, plungers, and seals over thousands of operating hours.

• Flexible Installation Options – The 24 mm keyed solid shaft provides rigid, high-torque coupling to belts, pulleys, or direct drives using standard keyways. The pump also features a 1-1/8" hollow shaft option and a 2.2:1 gear reduction in other configurations, but the "S" solid shaft models are the go-to for electric or direct-drive mounting.

• Stable Operation Under Continuous Load – The 21.5 EBHP power requirement is sized for serious, continuous-duty work. This is a pump that thrives during multi-hour wash sessions, not one that struggles to keep up.

• Serviceability and Parts Support – The pump has an oil capacity of approximately 34.5 oz (Udor Lube or SAE 30W non-detergent), with easy-access fill and drain points. Seal kits and valve kits are standardized across the CKC line, and Barens provides strong aftermarket parts support.

• Clean, Predictable Performance – The triplex plunger mechanism produces pulsation-smoothed flow, protecting downstream hoses, guns, nozzles, and surface cleaners from damaging pressure spikes.

What Makes the CKC 30/24 S Different

Many high-pressure plunger pumps on the market run at 1,750 RPM or higher, trading long-term reliability for a smaller physical footprint. The CKC 30/24 S takes a different approach - heavy duty construction at lower speed for superior durability under real-world conditions.

• Low-Speed Heavy-Duty Design – Operating at 1,450 RPM rather than 1,750–3,400 RPM means lower bearing temperatures, reduced vibration, and quieter operation. Every component - from the hardened steel crankshaft to the over-size roller/ball bearings - experiences less stress per cycle, translating directly into longer intervals between rebuilds.

• Optimized Flow-to-Pressure Balance – At 7.9 GPM and 3,480 PSI, the CKC 30/24 S sits at a sweet spot for multi-gun pressure washing setups and single-gun high-impact cleaning. It delivers enough volume to feed two spray guns simultaneously while maintaining pressure that cuts through grease, grime, and heavy soiling.

• 24 mm Keyed Solid Shaft Advantage – The solid shaft design provides superior torsional stability and eliminates the slippage risk that can affect hollow shaft configurations under variable or high-torque loads. This makes the "S" model the preferred choice for belt-driven or direct-coupled systems.

• Industrial-Grade Seals and Valves – The components include stainless steel piston guides and check valves for corrosion resistance, ensuring the pump handles frequent starts, stops, and aggressive duty cycles without premature wear.

• European BSP-F Porting with Wide Adapter Availability – The ¾" BSP-F inlet and ⅜" BSP-F outlet are standard across the CK series. Adapters to NPT threading are readily available, so integrating this pump into North American plumbing configurations is simple.

How the Udor CKC 30/24 S Pump Works in Your System

Here is a straightforward walkthrough of installing and operating the CKC 30/24 S in a typical high-pressure cleaning or spraying system.

1. Mount and Align the Pump Secure the pump to a rigid base plate, skid, or trailer frame. Align the 24 mm keyed solid shaft with your engine, motor, or belt-drive system, and size pulleys to achieve the rated 1,450 RPM at the pump shaft. Precise alignment prevents vibration, shaft stress, and premature bearing wear.

2. Connect Inlet and Outlet Lines Attach a properly filtered, unrestricted water supply to the ¾" BSP-F inlet port. The supply flow must exceed 7.9 GPM to prevent cavitation. Connect your high-pressure hose or manifold to the ⅜" BSP-F outlet using appropriate fittings rated for at least 3,480 PSI. The maximum fluid temperature is 160°F - exceeding this limit risks seal and valve degradation.

3. Fill and Check Lubrication Fill the crankcase with 34.5 oz of Udor Lube or SAE 30W non-detergent oil, representing the increased oil capacity that supports sustained heavy-duty operation. Verify the oil level through the sight glass and establish a regular oil change schedule.

4. Start-Up and Pressurization Purge air from the system by cycling the pump briefly with the trigger open. Slowly bring the pump up to 1,450 RPM and adjust the unloader or pressure regulator to your desired operating pressure, up to 3,480 PSI maximum.

5. Delivering Flow to the Work The triplex plunger design converts shaft rotation into three overlapping pressure strokes, producing smooth, consistent flow to your spray guns, surface cleaners, jetting nozzles, or spray booms. This is suitable for continuous high-pressure fluid delivery across extended work sessions.

6. Shut-Down and Protection Release the trigger to relieve system pressure before shutting down the drive. Avoid extended bypass cycling. Never allow the pump to run dry - Udor pumps can run dry without damage for short periods, and Udor's dry run test predates Legacy's by about 10 years. Legacy HD pumps also claim to run dry for 24 hours, and Udor and Legacy pumps are nearly equal in durability. That said, continuous dry-running will still damage seals and plungers over time, so always maintain adequate water supply.

Product Details

Below is a scannable overview of the CKC 30/24 S specifications.

• Pump Type: Triplex plunger high-pressure pump from Udor's CKC series, classified as a super-duty plunger pump for industrial applications

• Max Flow: 7.9 GPM (30.0 L/min)

• Max Pressure: 3,480 PSI (240 bar)

• Rated Speed: 1,450 RPM

• Shaft Type: 24 mm keyed solid shaft, "S" designation

• Power Requirement: 21.5 EBHP (Electric Brake Horsepower)

• Inlet Port: ¾" BSP-F - requires adequate water supply and filtration

• Outlet Port: ⅜" BSP-F - compatible with high-pressure hoses via appropriate fittings

• Lubrication Capacity: 34.5 oz of Udor Lube or SAE 30W non-detergent pump oil

• Max Fluid Temperature: 160°F

• Construction Materials: Heavy-duty brass manifold (external and internal reinforcement), ceramic plungers, stainless steel piston guides and check valves, aluminum die-cast crankcase with cataphoresis coating, hardened steel crankshaft, heavy-duty tapered roller bearings

• Typical Applications: Commercial pressure washing, sewer jetting, industrial cleaning, hydro-excavation, agricultural spraying, and specialized cleaning rigs

• Included with Pump: Oil sight glass, fill and drain plugs, mounting feet, and standard shipping plugs

• Warranty / Support: Udor pumps are backed by manufacturer warranty; specific terms handled at time of purchase through authorized distributors like Barens

Who the Udor CKC 30/24 S Pump Is For

This pump matches a specific number of user profiles and industries where consistent high-pressure output and long-term reliability outweigh upfront cost considerations. Udor pumps are considered durable compared to other brands, making this a sound investment for serious operators.

• Professional Pressure Washing Contractors – Operators running large flatwork jobs, fleet washing operations, building exteriors, and multi-gun trailer rigs who need reliable 7.9 GPM / 3,480 PSI performance day after day.

• Industrial Facilities and Wash Bays – Manufacturing plants, trucking depots, and equipment yards that operate wash systems for several hours per day, demanding heavy duty construction and minimal downtime.

• Agricultural Operators – Crop sprayers, livestock facility cleaning crews, and farm equipment washing setups requiring steady flow, robust components, and resistance to demanding duty cycles.

• OEMs and System Builders – Manufacturers building custom skids, trailer-mounted units, or fixed wash systems who need a proven, low-speed pump platform with a standardized 24 mm solid shaft interface and the Udor logo as a mark of quality their customers recognize.

• Users Upgrading from Light-Duty Pumps – Contractors who have outgrown homeowner or light commercial plunger pumps and need a meaningful step up in duty cycle, reliability, and serviceability.

This pump is best suited for users who can supply sufficient power (21.5 EBHP minimum) and water flow (exceeding 7.9 GPM), and who value long-term, serviceable equipment over disposable alternatives.

Frequently Asked Questions

Here are answers to the most common selection and usage questions for the CKC 30/24 S.

What drive power do I need for the CKC 30/24 S? You should pair this pump with at least 21.5 EBHP at 1,450 RPM. Account for efficiency losses in your belt drive, gear reduction, or coupling system - oversizing the motor or engine slightly is always better than undersizing.

Can I run this pump at a higher RPM than 1,450? The CKC 30/24 S is rated for 1,450 RPM. Running above this speed risks overpressure, accelerated seal wear, and potential failure. Always size your pulleys or gearing to deliver 1,450 RPM at the pump shaft.

What water supply do I need? Your water supply should exceed 7.9 GPM, be clean and well-filtered, and connect to the ¾" BSP-F inlet with minimal restriction. Starving the inlet causes cavitation, which damages plungers and valves.

How often should I change the pump oil? Perform an initial oil change after the first 50 hours of operation, then at approximately every 300 hours or annually - whichever comes first. Use Udor Lube or SAE 30W non-detergent oil and always check the level before each use.

Is the 24 mm keyed solid shaft compatible with my existing drive components? Most belt pulleys and couplers can be sourced or bored to a 24 mm keyed bore. Standard bushings and adapters are widely available, making it straightforward to match the CKC 30/24 S to your drive system.

What happens if the pump runs dry? While Udor pumps can run dry without damage for short periods - continuous dry-running will still damage seals and plungers. Always maintain an adequate, uninterrupted water supply.

Can this pump be used with hot water? The maximum fluid temperature is 160°F. For applications above that threshold, consult Udor documentation or contact Barens technical support to discuss seal upgrades or specialized configurations.

Ready to Build or Upgrade Your High-Pressure System?

The Udor CKC 30/24 S delivers exactly what professional and industrial operators need: 7.9 GPM, 3,480 PSI, and 1,450 RPM durability built into a proven triplex plunger platform with a 24 mm keyed solid shaft and a 21.5 EBHP power requirement that matches serious drive systems. The heavy-duty brass manifold, ceramic plungers, stainless steel piston guides, and tapered roller bearings aren't marketing language - they're the reason these Udor pumps perform reliably for years in the harshest applications.

Whether you're building a new pressure washing trailer, upgrading an industrial wash bay, or specifying a pump for an OEM skid, the CKC 30/24 S is designed to be the last pump platform you need to evaluate. Its serviceability, parts availability, and proven CK series lineage make it a straightforward choice for anyone who measures equipment value in years of reliable operation.

Contact Barens today to spec the Udor CKC 30/24 S pump into your system, confirm drive compatibility, and get expert guidance on fittings, shaft orientation, and accessories. Barens serves as your technical partner - from initial selection through installation support and ongoing parts supply. Reach out by phone or through the Barens website to get started.