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Interpump W112 High Pressure Triplex Plunger Pump, 12 L/min @ 1450 PSI
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Pickup currently unavailable at SOFTWASH AUSTRALIA 2023

Interpump W112 High Pressure Triplex Plunger Pump, 12 L/min @ 1450 PSI
SOFTWASH AUSTRALIA 2023
691 Pine Ridge Road
Biggera Waters QLD 4216
Australia
Power your commercial pressure cleaning systems with the Interpump W112 High-Pressure Plunger Pump. Engineered as part of the heavy-duty Series 44 lineup, this triplex pump delivers a reliable 12 L/min flow rate at 1450 PSI, operating at a slow 1450 RPM to maximize seal life and internal pump longevity.
Featuring a nickel-plated aluminium head for superior corrosion resistance and durability, the W112 is built to perform in demanding wash bay, industrial, and vehicle-mount cleaning applications. It is an ideal choice for contractors and facility operators seeking smooth, low-vibration performance and standard-setting Italian pump engineering.
Key Features & Benefits
- Heavy-Duty Triplex Design: Industrial Series 44 build quality ensures steady, smooth fluid delivery and long service life under constant daily use.
- Low-Speed Operating Efficiency: Runs at 1450 RPM to minimize thermal wear, reduce noise, and extend plunger seal life.
- Superior Corrosion Resistance: Comes standard with a durable nickel-plated aluminium manifold head (brass head option available on request).
Specifications
- Series: Series 44
- Pump Type: Triplex Plunger Pump
- Flow Rate: 12 L/min
- Operating Pressure: 1450 PSI
- Operating Speed: 1450 RPM
- Power Requirement: 3 HP
- Inlet Connection: 1/2″ BSP Female
- Outlet Connection: 3/8″ BSP Female
- Head Material: Nickel-Plated Aluminium
- Weight: 7.7 kg
- Dimensions: 225 x 223 x 121 mm
If your order is placed before 2:00pm, we will try to post same day.
We use a range of couriers to provide you with the best possible freight pricing.
If your order does not ship immediately, we are likely waiting on a courier update. Please refer to your account for updates or contact us to find out more.
We are happy to work with you if you need a return. Please contact us to discuss.
Frequently Asked Questions
What power source is needed to drive the Interpump W112 pump?
The Interpump W112 requires a minimum 3 HP (2.2 kW) electric motor or equivalent petrol engine drive setup operating at 1450 RPM.
What is the benefit of a low-speed 1450 RPM pump?
Running at 1450 RPM reduces heat build-up and mechanical wear on ceramic plungers, oil seals, and valves compared to high-speed 2800 RPM pumps, significantly lengthening service intervals.
Can I order the Interpump W112 with a brass pump head instead of aluminium?
Yes. While the standard version comes with a nickel-plated aluminium manifold, a brass head option is available on request.
What are the plumbing connection sizes on the Interpump W112?
The pump features a 1/2″ BSP female inlet thread for supply water plumbing and a 3/8″ BSP female outlet thread for high-pressure hose connections.

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