Name: Stuart Turner Pressurisation Unit SPU 130 MINI - 46719
Brand: Stuart Turner
SKU: 46719
Price: 513.6 GBP
Availability: InStock

Stuart Turner Pressurisation Unit SPU 130 MINI - 46719

In stock

Established 1975
Trusted by thousands of customers

The Stuart Turner SPU 130 MINI is a compact, wall-mounted digital pressurisation unit designed to maintain pressure in sealed heating, chilled water, refrigeration, and industrial cooling systems. Suitable for systems up to 6,000 litres, it automatically tops up system pressure from the mains supply whenever pressure drops below the set point — preventing low pressure faults, airlocks, and boiler lockouts without manual intervention.

Features a digital LED display and high flow WRAS-approved fill valve. Cold fill pressure set at 3.0 bar. Category 5 backflow protection via Type AB air gap and weir overflow ensures water authority compliance. The 2-litre internal break tank provides a buffer between the mains and the system. Outlet is configurable for left or right connection, with a flexible hose supplied. Exceptionally easy to install and commission.

Patent protected design. 2-year guarantee. For an alternative with MODBUS RTU connectivity, flood protection alarms, and onscreen service reminder, see the Flamco Flexfiller Minipress 130.

3.0bar

Cold fill

6,000L

System capacity

Cat 5

Backflow

2yr

Guarantee

WRAS fill valve
Patent protected
Digital LED display
Configurable L/R outlet
Hose supplied
Wall mounted

Full Description

More about this product

Full Description

What is the SPU 130 MINI?

The Stuart Turner SPU 130 MINI is a compact, wall-mounted digital pressurisation unit for sealed heating, chilled water, refrigeration, and industrial cooling systems. It monitors system pressure via a digital control system and automatically tops up from the mains supply whenever pressure drops below the set point — preventing the low pressure faults, pump cavitation, and boiler lockouts that occur when sealed systems lose pressure over time.

Suitable for systems up to 6,000 litres, the unit features a high flow WRAS-approved fill valve and a 2-litre internal break tank. Category 5 backflow protection is provided via a Type AB air gap and weir overflow, meeting water authority requirements. The cold fill pressure is set at 3.0 bar. The outlet is configurable for left or right connection, and a flexible hose is supplied with the unit for straightforward installation.

The SPU 130 MINI is a patent protected design, supplied with a 2-year guarantee. Stuart Turner units are exceptionally easy to install and commission, housed in a compact and robust enclosure suited to plant room and commercial environments.

3.0^bar

Cold fill pressure

6,000^L

System capacity

Cat 5

Backflow

Patent

Protected

WRAS fill valve · 2-year guarantee

Key features

Digital LED control

Digital control system with LED display provides clear pressure readout and automated system top-up, commissioning in a straightforward and intuitive process.

Category 5 backflow protection

Type AB air gap and weir overflow provide Category 5 backflow protection — meeting water authority requirements for mains connection to a heating or cooling system.

High flow WRAS fill valve

WRAS approved high flow fill valve ensures rapid, reliable system top-up whilst maintaining full compliance with water regulations.

Configurable outlet — hose included

The outlet can be configured for left or right connection to suit the installation. A flexible hose is supplied with the unit, reducing additional parts required on site.

Patent protected design

The SPU 130 MINI incorporates a patent protected design, housed in a compact and robust enclosure suitable for wall mounting in plant rooms and commercial environments.

Wide application range

Suitable for sealed heating systems, chilled water systems, refrigeration units, and industrial cooling systems — covering a broad range of commercial and light industrial applications.

Technical specifications

Brand / Model	Stuart Turner — SPU 130 MINI (46719)
Application	Sealed heating, chilled water, refrigeration, industrial cooling
Max system capacity	Up to 6,000 litres
Internal break tank	2 litres
Cold fill pressure	3.0 bar
Pump configuration	Single (duty)
Display / control	Digital control system with LED display
Fill valve	High flow, WRAS approved
Backflow protection	Category 5 — Type AB air gap, weir overflow
Outlet connection	Configurable left or right — flexible hose supplied
Mounting	Wall mounted — compact, robust enclosure
Patent	Patent protected
Guarantee	2 years

How it compares

Feature	Stuart Turner SPU 130 MINI	Flamco Minipress 130
Application	Heating, chilled, refrigeration, industrial cooling	Heating & cooling sealed systems
Max system capacity	Up to 6,000 litres	Up to 6,000 litres
Internal break tank	2 litres	2 litres
Max delivery pressure	3.0 bar	3.0 bar
Pressure setting increments	Not stated	0.1 bar
Display / control	Digital LED display	Microprocessor & pressure transducer
BMS communication	Not stated	MODBUS RTU
Flood protection	Not stated	Runtime limiter & excessive start alarms
Alarm output	Not stated	Volt-free common alarm contact
Service reminder	Not stated	12 months onscreen
Temperature ranges stated	Not stated	System 5–85°C · Supply 5–45°C
Commissioning	Easy (no time stated)	~30 seconds
Outlet connection	Configurable L/R · flexible hose included	Not stated
Backflow protection	Cat 5 — AB air gap, weir overflow	Cat 5 — AB air gap, weir overflow
WRAS	WRAS approved fill valve	WRAS approved fill valve
Patent	Patent protected	Not stated
Warranty	2 years	Not stated on product page

Frequently asked questions

What is a pressurisation unit and what does it do?

A pressurisation unit maintains the correct operating pressure in a sealed heating or cooling system. Sealed systems lose pressure over time through small leaks, dissolved gas, and thermal cycling. The unit monitors system pressure and automatically tops it up from the mains supply whenever it drops below the set point — preventing airlocks, pump cavitation, and boiler lockouts caused by low pressure faults.

What does Category 5 backflow protection mean?

Category 5 (Fluid Category 5) is the highest level of backflow risk classification under UK Water Regulations, applying to any system that could introduce toxic or hazardous substances into the mains supply — including sealed heating systems which contain treated water and inhibitors. A Type AB air gap (visible air gap with overflow) is the required protection method. The SPU 130 MINI’s integral air gap and weir overflow meet this requirement, making it compliant for direct mains connection in heating and cooling system applications.

Is the SPU 130 MINI suitable for chilled water and refrigeration systems?

Yes. Stuart Turner specify the SPU 130 MINI for sealed heating systems, chilled water systems, refrigeration units, and industrial cooling systems. Please confirm suitability for your specific application and fluid type with the data sheet or by contacting us.

How does the SPU 130 MINI compare to the Flamco Minipress 130?

Both units share the same system capacity (6,000L), tank size (2L), max delivery pressure (3 bar), and Category 5 backflow protection. The SPU 130 MINI is patent protected, carries a stated 2-year guarantee, and includes a configurable outlet with flexible hose supplied. The Flamco Minipress 130 adds MODBUS RTU BMS connectivity, flood protection alarms with a volt-free alarm contact, 0.1 bar pressure setting increments, an onscreen service reminder, and stated temperature operating ranges. See the comparison table above for a full side-by-side breakdown.

Is a higher capacity version available?

Please contact us to discuss higher capacity or twin pump pressurisation requirements. We stock a range of pressurisation units from Stuart Turner, Flamco, and other manufacturers to suit larger or more demanding applications.

Downloads

Data Sheet PDF
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Brochure PDF
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Delivery Information

Standard delivery:

Standard delivery is free for all orders except for some low cost/low margin items where standard delivery is £6.75. Some difficult to transport goods also have a varying carriage charge applied.

Please contact us for the estimated standard delivery times of the products that we have in stock, by dropping us a message on our Whatsapp or Live chat.

Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).

Next day delivery:

Next working day delivery is available for a £15.00 + vat delivery charge.

Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.

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