CAT Pumps 3821KHS.0110 Pump, 25 GPM, 2000 PSI
Genuine Cat Pumps OEM — Cat Pumps Corporation, HQ Minneapolis, MN — supplied by ForeverPure Corporation, an authorized Cat Pumps distributor in Santa Clara, California.
The Cat Pumps 3821KHS.0110 is a triplex piston pump in the Cat Pumps 38-Frame Piston Pump family, rated for 25 GPM at 2000 PSI. 38-Frame piston pumps run smooth high-flow low-pressure water for reverse osmosis feed, misting, car wash, and vehicle cleaning duty.
Typical Applications & Industries
Common Applications
- Reverse osmosis feed
- Misting & cooling
- Car wash rinse
- Industrial wash-down
Industries Served
- Water treatment & desalination
- Commercial car wash & detailing
- Agriculture & irrigation
- Oil & gas (produced water)
- Food & beverage processing
- Industrial cleaning & facility services
Documentation & Service
📄 Cat Pumps Data Sheet (PDF)🔧 Cat Pumps Service Manual (PDF)
The data sheet carries the specifications, the exploded view, the numbered parts list and the seal and valve kit tables. The service manual covers installation and start-up, valve and seal servicing, the torque chart and troubleshooting.
Specifications & Dimensions
Overall size: 24.84 x 18.11 x 9.88" (631 x 460 x 251 mm) — weight 167 lbs (75 kg). The shipping weight shown at checkout already allows for packaging.
| Specification | Value | Metric |
|---|---|---|
| Max Flow | 25 gpm / 94.6 lpm | — |
| Max Pressure | 2000 | — |
| RPM | 870 | — |
| Inlet Port Size | 1 1/2" NPT(F) | — |
| Discharge Port Size | 1" NPT(F) | — |
| Drive type | Belt, Flexible Coupling and Bellhousing | — |
| Material | 316 Stainless Steel | — |
| Inlet pressure range | Flooded to 70 psi | Flooded to 4.8 bar |
| Max. liquid temperature (NBR) | 160° F | 71° C |
| Bore | 1.260" | 32 mm |
| Stroke | 1.890" | 48 mm |
| Crankcase capacity | 4 l | — |
| Inlet ports | 11/2" NPT(F) | 11/2" NPT(F) |
| Discharge ports | 1" | 1" |
| Shaft diameter | 1.378" | 35 mm |
Figures as published by Cat Pumps for this model (3821HS_C). Cat publishes the envelope and the port and shaft interface but no dimensioned outline drawing; ask us if you need one for a skid layout.
Performance & Sizing
The 3821KHS.0110 is a positive-displacement pump, so it has no flow-versus-pressure curve in the sense a centrifugal pump does, and Cat Pumps does not publish one. Flow is set by the displacement and the shaft speed and stays essentially constant as discharge pressure rises. Pressure is set by the restriction downstream — the nozzle, orifice or membrane array — and capped by the regulating device, not by the pump.
This is a belt-drive frame, so the pulley ratio sets the pump speed. To work out flow at another speed, or to size the drive, use the relations Cat Pumps prints on its data sheets:
| Flow at another speed | Desired GPM = Rated GPM × (Desired RPM ÷ Rated RPM) |
| Required horsepower | HP (electric brake) = GPM × PSI ÷ 1460 |
Rated speed for this model is 870 rpm.
Maximum ratings apply individually — do not assume maximum flow and maximum pressure can be taken together. A primary pressure-regulating device and a secondary safety relief device are both required in the system. Talk to us before ordering if your duty sits near a limit.
Frequently Asked Questions
What is the Cat Pumps 3821KHS.0110?
The Cat Pumps 3821KHS.0110 is a triplex piston pump from the Cat 38-Frame Piston Pump family, rated at 25 GPM and 2000 PSI maximum pressure. Cat Pumps are positive-displacement triplex pumps supplied by Cat Pumps Corporation, headquartered in Minneapolis, Minnesota, USA.
What is the Cat Pumps 3821KHS.0110 used for?
Typical applications include reverse osmosis feed, misting & cooling, car wash rinse, industrial wash-down. Cat Pumps triplex pumps are preferred in continuous-duty industrial service because their positive-displacement plunger or piston design delivers smooth constant flow at high pressure with long service life.
How much does the Cat Pumps 3821KHS.0110 cost?
Pricing is quote-based and depends on configuration, quantity, and delivery schedule. ForeverPure Corporation, as an authorized Cat Pumps distributor, provides factory-direct pricing with same-day quotes. Call +1-408-969-2688 or use the Request a Quote form.
What parts and service kits are available for the Cat Pumps 3821KHS.0110?
A full line of genuine Cat Pumps OEM service kits, seals, valves, plungers, and accessories is available. The specific kits compatible with 3821KHS.0110 depend on the pump's frame, material, and seal material — contact ForeverPure for a cross-reference list and current pricing.
Where is the Cat Pumps 3821KHS.0110 manufactured?
Cat Pumps Corporation is headquartered in Minneapolis, Minnesota (1681 94th Lane NE, Minneapolis, MN 55449) and has been the Cat Pumps brand owner since 1968. Cat Pumps triplex pumps, spare parts, and accessories are manufactured at the company's US and Japan production facilities to Cat Pumps Corporation's ISO 9001:2015 factory specifications — the country of origin for this specific SKU is listed in the technical specifications table above.
How do I get a quote or datasheet for the Cat Pumps 3821KHS.0110?
Call ForeverPure Corporation at +1-408-969-2688, email sales@foreverpure.com, or request a quote through the website. As an authorized Cat Pumps distributor, ForeverPure provides factory-direct pricing, datasheets, cross-reference support, and same-day turnaround on most quote requests.
What is the warranty on the Cat Pumps 3821KHS.0110?
Cat Pumps factory warranty: 1 year on complete pumps, 90 days on parts and accessories, from date of purchase from an authorized distributor. ForeverPure honors and administers Cat Pumps warranty claims for customers in North America.
Recommended Accessories for This Pump
Cat Pumps specifies these accessories for this pump. A regulator or unloader and a relief device are required on any high-pressure system; an inlet filter and the correct crankcase oil are what actually determine how long the pump lasts.
| Accessory | Cat Pumps part |
|---|---|
| SS Pressure Regulator | 7022.100 |
| SS Pop-Off Valve | 9941 |
| Pulsation Dampener-Rechargeable-NBR | 6018 |
| SS Pressure Gauge | 6097 |
| Crankcase Oil | 6107 |
| Oil Drain Kit | 34314 |
| Inlet Filter | 7108.8 |
| Inlet Pressure Stabilizer | 714500 |
| LPS Monitor | 32447 |
| LPS Monitor | 32447.120AC |
Accessory pairings as published by Cat Pumps for this model. Not sure which you need? Send us your duty point and we will specify the set.
