T991 Triplex Pressure Washer Pump – 3.5 GPM @ 1500 PSI, 1450 RPM, 24 mm Solid Shaft

Part Number: T991
Category: Pressure Washer Pumps
Type: Belt-Drive Triplex Pump – T991, 3.5 GPM @ 1500 PSI (1450 RPM, 24 mm Solid Shaft)

The T991 Triplex Pressure Washer Pump is a low-speed, belt-drive triplex pump engineered for smooth operation, extended service life, and dependable performance in light commercial and industrial cleaning systems. Rated for 3.5 GPM at up to 1500 PSI and designed to operate at just 1450 RPM, this pump delivers steady flow with minimal vibration and reduced mechanical wear compared to higher-speed units. Featuring a 24 mm solid shaft, the T991 is ideal for belt-driven configurations where quiet operation, durability, and flexibility in pulley ratios are required, making it a reliable choice for custom systems, equipment refurbishment, and OEM applications.

Product Specifications

Pump Model: T991
Pump Type: Triplex Plunger, Belt Drive
Flow Rate: 3.5 GPM
Max Pressure: 1500 PSI
Rated Speed: 1450 RPM
Shaft Size: 24 mm Solid
Bore: 20 mm
Stroke: 10 mm
Weight: 19 lbs
Condition: New

Features & Benefits

• Triplex plunger design for smooth, low-pulsation operation

• Low-RPM operation for reduced wear and extended pump life

• 24 mm solid shaft for belt-drive configurations

• High 3.5 GPM flow for efficient rinsing

• Heavy-duty construction for continuous-duty applications

• More durable and serviceable than axial-style pumps

Applications

• Belt-driven pressure washer systems

• Light commercial and industrial cleaning equipment

• OEM and custom-built pressure washers

• Equipment repair and refurbishment

Important Notes

• Verify shaft size (24 mm solid), pulley compatibility, and operating speed (1450 RPM) before ordering

• Designed for belt-drive configurations

• Final operating PSI and GPM depend on motor output and overall system setup