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 of this type work by compressing a flexible tube to move fluid through the system, which keeps the chemical isolated from the pump mechanism itself — reducing wear and making the pump straightforward to maintain.

In a commercial warewashing environment, reliable chemical dosing directly affects wash results and running costs. Too little detergent and wash quality suffers; too much and you're wasting chemical and potentially affecting 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. The trimmer control is accessible for initial setup, with tamper protection plugs available to secure the setting once it's dialled in — useful in busy operations where accidental adjustment is a risk.

Practical advantages for operators include:

• Adjustable output to suit different detergent concentrations and machine demands
• Low power draw keeps running costs negligible
• Compatible with wall mounting or internal fitting within most equipment
• Simple trimmer setting reduces commissioning time
• Tamper protection helps maintain consistent dosing once set

Installation is straightforward for a qualified engineer, but correct positioning relative to the detergent container and machine draw point matters for reliable priming. The pump should be matched to the detergent viscosity and concentration in use — it's worth confirming compatibility with your chemical supplier if you're switching products.

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 dosing system. For sites with multiple machines or higher chemical throughput, a higher-capacity dosing arrangement may be more appropriate.

If you're unsure whether this pump suits your machine or detergent setup, our team is happy to help you work through the details before you order.