CAT 340
Code: 997/PRA

Product detailed description
CAT 340 high-pressure plunger pump
The CAT 340 is a three-plunger pump with a chrome-plated brass manifold, ceramic plungers and standard NBR seals. Its rated flow is 15 L/min at 1725 rpm, with a maximum pressure of 124 bar. CAT rounds the flow to 15 L/min in the linked data sheet; its product page lists 15.1 L/min.
Connections and installation
- Inlet: 1/2" NPT female.
- Outlet: 3/8" NPT female.
- Shaft diameter: 20 mm.
Before replacing an existing pump, compare its full model code, shaft orientation, mounting dimensions and operating speed. The rated flow above does not apply unchanged at a different speed. Confirm the selected left/right option against your installation; this listing is not a universal replacement for every car-wash system.
Technical documentation
CAT 310 / 340 / 350 data sheet, dimensions and parts list (PDF)
For help identifying a replacement, send UMYTEC the full pump model and a photo of the identification plate, together with the motor speed and required pressure and flow.
Additional parameters
| Category: | PUMPS |
|---|---|
| Flow rate: | 15 L/min |
| Pressure Max: | 124 bar |
| RPM: | 1725 |
| Shaft diameter: | 20 mm |
| Inlet thread: | 1/2" NPT female |
| Outlet thread: | 3/8" NPT female |
CAT Pumps: triplex pumps for demanding applications
CAT Pumps develops high-pressure positive displacement pumps and pumping systems for professional and industrial use. The brand is associated with triplex piston and plunger pump technology, serviceable construction and a broad choice of configurations for different liquids and operating conditions.
Where CAT Pumps are used
Applications extend well beyond vehicle washing. The manufacturer supplies pumping solutions for industrial cleaning, reverse osmosis, food and beverage processing, misting and manufacturing. Specialised models also serve mobile equipment and oil and gas installations.
- Pressure washing and self-service or automatic car wash systems.
- Water treatment, reverse osmosis and controlled liquid delivery.
- Misting, cooling and humidity control.
- Industrial washdown and equipment cleaning.
Materials, installation and servicing
Different pump families use different wetted materials and seals. Select the configuration for the liquid, temperature, pressure and required flow rather than assuming that every CAT pump is suitable for the same service. Drive speed, shaft dimensions and inlet conditions must also match the installation.
Browse our CAT high-pressure pumps to compare models. For maintenance, use the pump model and parts drawing to identify the correct seal, valve or piston components.

