Controls & Valves

The Honeywell Home DU144 22 mm Straight Auto Bypass Valve (DU144A1001) is a robust automatic bypass valve designed to ensure minimum boiler flow, maintain pressure balance and reduce noise in closed‑loop heating systems. With 22mm compression fittings, wide differential pressure range (0.1–0.6 bar) and brass construction, it offers a professional solution for energy‑efficient central heating installations.

The EPH CM2 Room Thermostat 10(3)A 230 & 24Vac provides reliable and accurate temperature control for central heating systems. Ideal for home heating, it ensures efficient performance and easy operation.

The Honeywell Home DU145‑3/4B 22 mm Differential Bypass Valve ensures consistent boiler flow and stable system pressure by automatically regulating differential pressure in heating circuits. With 22 mm compression connections, a wide differential pressure range (0.1‑0.6 bar) and high flow capacity, it is ideal for modern central heating systems requiring reliable bypass control.

The Danfoss Aero® Sensor 015G4550 is a built‑in thermostatic sensor head designed to retrofit older Danfoss RA/VL valve bodies. It features a temperature range of 7‑28 °C and gas‑filled bellow technology, making it an efficient solution for controlling radiator output and maintaining comfortable room temperatures.

The Honeywell Home Sundial Wiring Centre 42005748‑001 is a dedicated junction box designed for domestic central‑heating control systems. With 37 clearly labelled single‑wire terminals, a fire‑retardant PC‑ABS enclosure and support for S‑Plan, Y‑Plan and C‑Plan configurations, it streamlines installations and helps reduce wiring errors.

The Honeywell Home Actuator for V4043H (40003916‑001/U) is a genuine replacement powerhead designed to fit the V4043H series two‑port motorised zone valves. Compatible with UK 230 V systems, it features a manual lever, spring‑return mechanism and quick‑swap fitment without full system drainage — ideal for fast, professional repairs.

The Honeywell Home Sundial RF2 Pack 1 (Y9120H2009) delivers energy-efficient heating control with TPI (Time Proportional & Integral) technology, compliant with Boiler Plus regulations. Featuring 2-way wireless connectivity at 868 MHz with a 30 m range, pre-bound from the factory for easy setup. Operates between 0–40°C, IP30 rated, and includes ST9120C powered by 230V AC and DT92E with 2×AA batteries. Supports wireless enable upgrades and comes with a 5-year warranty.

The VCDS Chrome Plated Double Check Valve with Isolation Valve 15mm (DCBL15) provides secure backflow prevention while allowing easy isolation for maintenance and repairs. Ideal for domestic and commercial plumbing systems, this durable chrome-finished valve ensures reliable water protection and efficient operation. Perfect for professionals and DIY users, it delivers long-lasting performance and straightforward installation. Trust Plumbco for quality valves and fast delivery.

The Danfoss UNTIMED‑HP22(2)‑TP5000(2)‑WB Control Pack (part 087N6520H4) is a comprehensive two-zone heating control solution combining 2 motorised HP22 valves, 2 TP5000 programmable room thermostats and a wiring centre. Although now discontinued, it remains a high-quality option for reliable, untimed zone control in domestic heating systems.

The Danfoss FP720‑HP22(2)‑ATC‑RMT‑WB Control Pack (087N6314) is a complete two‑zone heating solution, combining a FP720 two‑channel programmer with dual HP22 motorised valves, an ATC cylinder thermostat and an RMT room thermostat — providing seamless scheduling and zone control for modern central‑heating systems.

The Danfoss FP720‑HS3‑ATC‑RMT‑WB Control Pack (part 087N6315) delivers a full two‑zone heating control solution in one kit. Featuring a FP720 twin‑channel timer, HS3 motorised 22 mm three‑port valve, ATC cylinder thermostat, RMT room thermostat and wiring centre, this pack simplifies installation and delivers efficient, scheduled heating for modern systems.

The Honeywell Home 22 mm 3‑Port Diverter Valve (V4044C1288/U) is a high‑quality motorised valve designed for domestic fully‑pumped central heating systems. Its 22 mm compression connections, two‑position operation and spring‑return mechanism allow seamless switching between heating and hot‑water services for enhanced system flexibility and reliability.

The Drayton 22mm 2 Port Valve and Actuator 27100 is designed for precise control of domestic heating systems, regulating water flow to radiators or zones. Durable and compatible with most standard boilers, this valve and actuator pair ensures smooth operation, energy efficiency, and easy installation, making it an essential component for modern central heating setups.

The Polypipe UFHDIALW Dial Room Thermostat provides accurate and convenient temperature control for domestic and commercial heating systems. Its simple dial design allows easy adjustments to maintain comfortable and energy-efficient environments.

The Altecnic Safety Relief Valve Series 311 311470 1/2″ x 1/2″ 7 Bar is designed for safe pressure control in heating systems. Ideal for boilers and plumbing applications, it delivers reliable performance and system protection.

The Altecnic Safety Relief Valve Series 312 312425 1/2″ x 1/2″ 2.5 Bar ensures safe and reliable pressure control in heating systems. Ideal for boilers and plumbing applications, it delivers consistent performance and system protection.

The Altecnic Series 519 Ecopas Full Flow Differential Bypass Valve 519002 is designed for efficient pressure control in central heating systems. With 22mm compression ends and adjustable settings, it ensures reliable performance and system protection.

The Danfoss Cylinder Thermostat 041E0010 is a robust electro‑mechanical surface‑mounted device designed to monitor and regulate hot water cylinder temperatures from 30 °C to 90 °C. Supplied with a spring‑clamp fixing strap for easy installation to the cylinder wall, it offers dependable switching to safeguard systems from overheating or under‑temperature conditions.

The Altecnic Temperature Gauge 688100 features a ½″ bottom connection and provides accurate temperature monitoring for boilers and central heating systems. Reliable and easy to install, it’s ideal for heating applications.

The Danfoss RMT‑230 (part 087N1100) is a mains-powered, electro‑mechanical room thermostat designed for 230 V heating systems. It features a large, easy‑to‑read dial, built‑in accelerator heater for improved control accuracy, SPDT contact switch and supports applications from radiators to underfloor heating.