Seko PR4 Speed Adjustable Internal Detergent Pump for Warewashers

The Seko PR4 is a peristaltic dosing pump designed to deliver liquid detergent to commercial dishwashers and glasswashers at a consistent, controlled rate. Peristaltic pumps work by compressing a flexible internal tube to move fluid through the system, which keeps the chemical fully isolated from the pump mechanism — reducing wear and making the unit straightforward to service.

In a commercial warewashing setup, reliable chemical dosing has a direct bearing on both wash quality and running costs. Underdosing leads to poor wash results; overdosing wastes chemical and can affect rinse performance. The PR4 addresses this with an analogue speed adjustment that allows the dosing rate to be set accurately for the machine and detergent in use. Once the setting is established, tamper protection plugs can be fitted to secure it — a practical consideration in busy operations where accidental adjustment is a genuine risk.

Practical advantages for operators include:

• Adjustable output to suit different detergent concentrations and machine demands
• Chemical isolation from the pump mechanism reduces maintenance requirements
• Compatible with wall mounting or internal fitting within most warewashing equipment
• Simple trimmer setting keeps commissioning time to a minimum
• Tamper protection maintains consistent dosing once the rate is confirmed

Installation is straightforward for a qualified engineer, though correct positioning relative to the detergent container and machine draw point matters for reliable priming. If you are switching detergent products, it is worth confirming viscosity and concentration compatibility with your chemical supplier before fitting.

This pump is well suited to single-site operations running one or two warewashers where a reliable, adjustable dosing solution is needed without the complexity of a larger system. Sites running multiple machines or higher chemical throughput may benefit from a higher-capacity dosing arrangement.

If you are unsure whether the PR4 is the right fit for your machine or detergent setup, our team is happy to talk it through with you before you order.