Hydrocomponents & Technologies Inc.

311 Cat Triplex Positive Displacement Plunger Pump 4 GPM / 15.1 LPM 2200 PSI 950 RPM Belt, Clutch, Flexible Coupling and Bellhousing Drive 316 Stainless Steel 1/2" NPT(F) Inlet Port 3/8" NPT(F) Discharge Port

Name: 311 Cat Triplex Positive Displacement Plunger Pump 4 GPM / 15.1 LPM 2200 PSI 950 RPM Belt, Clutch, Flexible Coupling and Bellhousing Drive 316 Stainless Steel 1/2" NPT(F) Inlet Port 3/8" NPT(F) Discharge Port
Brand: Hydrocomponents & Technologies Inc.
Price: 4199.99 USD
Availability: InStock

$4,199.99 USD

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311 Cat Triplex Positive Displacement Plunger Pump 4 GPM / 15.1 LPM 2200 PSI 950 RPM Belt, Clutch, Flexible Coupling and Bellhousing Drive 316 Stainless Steel 1/2" NPT(F) Inlet Port 3/8" NPT(F) Discharge Port

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Email: hctivista@gmail.com

PLEASE REFERENCE DATA SHEETS & TABLE BELOW

⚙️ CAT 311 Triplex Plunger Pump

Product Description

The CAT 311 Plunger Pump is a robust, industrial-grade Triplex Plunger Pump renowned for its reliability and efficiency in various continuous-duty applications. This pump delivers a maximum flow of 3.0 Gallons Per Minute (GPM) at pressures up to 1,200 PSI. Its construction features a durable Nickle-Plated Brass Manifold for enhanced corrosion resistance against common cleaning chemicals and treated water. The design incorporates high-strength, chrome-plated, stainless steel plungers for long-lasting wear resistance and specialized seals for extended life in demanding conditions. The CAT 311 is widely used in high-pressure wash systems, car wash applications, cooling, misting, and moderate-pressure industrial injection systems where consistent, maintenance-friendly operation is essential.

Specifications Table

Characteristic	Specification	Units / Notes
Model Number	311	Triplex Plunger Pump
Pump Type	Triplex Plunger Pump	Positive Displacement
Max Flow Rate	3.0 Gallons Per Minute	$3.0 \text{ GPM}$
Max Pressure	1,200 Pounds per Square Inch	$1,200 \text{ PSI}$
Max Pump Speed	1,200 Revolutions Per Minute	$1,200 \text{ RPM}$
Manifold Material	Nickle-Plated Brass	Enhanced Corrosion Resistance
Plunger Material	Chrome-Plated Stainless Steel	High-Strength
Max Liquid Temp	$160^\circ F$ (71$^\circ C$)	Standard Temp Rating
Inlet Ports	$1/2$ inch NPT Female	$1/2'' \text{ NPTF}$
Discharge Ports	$3/8$ inch NPT Female	$3/8'' \text{ NPTF}$
Horsepower (Required)	$2.6 \text{ HP}$ (Nominal)	$2.6 \text{ HP}$

TO VIEW DATA SHEET LARGER RIGHT CLICK SHEET AND SELECT OPEN IMAGE IN NEW TAB

Max Volume: 4.0 GPM (15 L/M)
Max Discharge Pressure: 100 to 2200 PSI (7 to 155 Bar)
Max inlet Pressure: -5 to +60 PSI (-0.35 to +4 Bar)
Max RPM: 950 RPM
Max Horsepower: 5.5 HP
Bore: 0.787" (20 mm)
Stroke: 0.709" (18 mm)
Crankcase Capacity: 18 oz. (0.55 L)
Max Fluid Temperature: 160°F (71°C)
Inlet Ports: (2) 1/2" NPT
Discharge Ports: (2) 3/8" NPT
Shaft Diameter: 0.787" (20 mm)
Weight: 19.8 lbs (9 kg)
Dimensions Standard: 11.5" x 10.0 " x 5.28" (292 x 254 x 134 mm)
Dimensions OEM: 11.5" x 8.35 " x 5.28 " (292 x 212 x 134 mm)
Pulley Mounting: Either Side

Alternate Specifications
Max Volume: 5 GPM (19 L/M) Max Discharge Pressure : 100 to 1500 PSI (7 to 100 Bar) Max inlet Pressure : Flooded to 60 PSI (4 Bar) Max RPM: 1190 RPM Max Horsepower: 5.2 HP

Other Models Available Upon Request