Product Description

KeyPlumb 25/6-130 3-Speed Central Heating Pump

Model: K11793

Replace a compatible domestic heating circulator with the KeyPlumb 25/6-130 Central Heating Pump. This compact pump has three manual speed settings, a maximum pump head of 6 metres and a standard 130mm port-to-port length.

The pump suits many domestic heating applications, including radiator circuits, hot-water circulation and compatible underfloor heating systems. In addition, its standard 1½-inch threaded connections make it a practical replacement for many existing Grundfos, DAB and similar circulators, provided that the dimensions and performance requirements match.

Key Features

• Pump data sheet
• Three manual speed settings
• Maximum pump head: 6 metres
• Port-to-port length: 130mm
• Standard 1½-inch threaded connections
• Compact and easy-to-fit design
• Quiet operation
• Suitable for many domestic heating systems
• Suitable for compatible radiator circuits
• Suitable for hot-water circulation
• Suitable for compatible underfloor heating systems
• Two-year manufacturer’s guarantee
• Product model: K11793

KeyPlumb Central Heating Pump Specification

• Brand: KeyPlumb
• Product type: domestic heating circulation pump
• Pump designation: 25/6-130
• Maximum pump head: 6 metres
• Number of speed settings: 3
• Speed control: manual
• Port-to-port length: 130mm
• Connection size: 1½-inch threaded
• Application: domestic heating circulation
• Guarantee: 2 years
• Product model: K11793

What Is Included?

• 1 x KeyPlumb 25/6-130 three-speed circulation pump
• Model: K11793

Please note: Pump valves, electrical controls and other installation accessories are not listed as included. Check the package contents before installation and order any additional parts separately.

Suitable Applications

The KeyPlumb K11793 pump circulates water through compatible domestic heating systems. Therefore, it can suit several common applications, including:

• Domestic radiator heating systems
• Hot-water circulation systems
• Compatible underfloor heating circuits
• Replacement of an existing 130mm heating circulator
• Heating-system repairs and upgrades

Always check the system design before ordering. The required flow rate, pump head, connection size and installation length must match the replacement pump.

Three Manual Speed Settings

The pump provides three manual speed settings. Therefore, the installer can select a suitable circulation rate for the heating system.

A lower setting may suit a smaller circuit or help reduce unnecessary flow noise. Meanwhile, a higher setting can provide more circulation where the system needs a greater pump head.

Always choose the setting that meets the heating-system design requirements. An incorrect setting may cause poor circulation, excessive noise or unnecessary energy use.

6-Metre Pump Head

The KeyPlumb K11793 provides a maximum pump head of 6 metres. This rating describes the pressure the pump can generate to move water around a heating circuit. It does not refer to the physical height of the building or the maximum pipe length.

The actual flow will vary according to the selected speed and the resistance within the heating system. Therefore, an installer should check the system requirements before choosing the pump.

Replacement Pump Compatibility

The 130mm installation length and standard 1½-inch threaded connections make this pump suitable as a replacement for many domestic circulators.

However, pump brands and models can have different performance curves, electrical requirements and control features. Before ordering, compare the following details with the existing pump:

• Port-to-port installation length
• Thread and union size
• Required flow rate
• Required pump head
• Electrical supply
• Control method
• Permitted installation position
• System water and temperature requirements

Do not choose a replacement pump by appearance alone. If you are unsure, ask a qualified heating engineer to confirm compatibility.

Installation Guidance

• Switch off and safely isolate the electrical supply
• Allow the heating system and water to cool
• Isolate or drain the relevant part of the system
• Check that the 130mm fitting length matches the installation
• Confirm that the connection threads and pump unions are compatible
• Fit the pump in the correct direction of water flow
• Follow the flow arrow shown on the pump body
• Use suitable seals and make sure every joint is watertight
• Vent the pump and heating system before operation
• Do not run the pump dry
• Select the correct speed for the system
• Check the installation for leaks and unusual noise

A suitably qualified person should install and electrically connect the pump. In addition, the installation must follow the pump instructions and all relevant electrical and heating regulations.

Choosing the Correct Speed

Start with the setting recommended for the heating-system design. Then check that every radiator or heating circuit receives enough flow.

If the setting is too low, parts of the system may heat slowly or remain cold. However, if the setting is too high, the system may produce flow noise or place unnecessary demand on valves and pipework.

Where possible, balance the heating system after fitting the pump. This helps distribute the water evenly and can improve comfort throughout the property.

Maintenance

Check the pump and nearby connections during routine heating-system maintenance. Look for leaks, corrosion, unusual noise or signs of poor circulation.

In addition, keep the system water clean and correctly treated. Sludge, scale and magnetic debris can reduce pump performance and shorten the working life of heating components.

KeyPlumb Pump Guarantee

The KeyPlumb K11793 circulation pump comes with a two-year manufacturer’s guarantee. Guarantee conditions apply, so keep your proof of purchase and follow the manufacturer’s installation and operating instructions.

Why Buy from SNH Tradecentre?

• Experienced plumbing and heating merchant
• Practical product advice from a knowledgeable team
• Fast UK delivery options
• Click and collect from our Birchington trade counter
• Wide range of heating-system parts and accessories
• Secure online ordering
• Support before and after your purchase

If you need help checking whether this pump can replace your existing circulator, contact SNH Tradecentre with the old pump model, fitting length and connection size before ordering.