46 products

  • A 22mm Automatic Bypass Valve Straight with Compression Connections with a black threaded connector on one arm and a brass-colored inner opening, shown on a plain white background.
    A 22mm Automatic Bypass Valve Straight with Compression Connections with a black threaded connector on one arm and a brass-colored inner opening, shown on a plain white background.

    22mm Automatic Bypass Valve | Straight | Compression Connections

    £7.99
    £7.99
    Price excluding VAT: £6.66

    The straight-through companion to the angled version. The 22mm Automatic Bypass Valve in a straight configuration gives excess water flow somewhere to go when zones or...
  • A metal 22mm Automatic Bypass Valve Angled with Compression Connections with a black plastic top cap, shown on a plain white background.
    A metal 22mm Automatic Bypass Valve Angled with Compression Connections with a black plastic top cap, shown on a plain white background.

    22mm Automatic Bypass Valve | Angled | Compression Connections

    £7.99
    £7.99
    Price excluding VAT: £6.66

    Zone valves closing shouldn't mean your pump is running against a dead end. The 22mm Automatic Bypass Valve in an angled configuration maintains a minimum flow...
  • 15mm Y-Strainer for Plumbing and Heating Systems

    15mm Y-Strainer for Plumbing and Heating Systems

    £5.99
    £5.99
    Price excluding VAT: £4.99

    Debris in pipework causes problems that are far easier to prevent than fix. The 15mm Y-Strainer sits inline on 15mm pipework and quietly intercepts particles before...
  • 22mm Y-Strainer for Plumbing and Heating Systems

    22mm Y-Strainer for Plumbing and Heating Systems

    £6.49
    £6.49
    Price excluding VAT: £5.41

    The same reliable protection as the 15mm version, sized up for 22mm pipework. The 22mm Y-Strainer intercepts dirt and debris inline, keeping it away from the...
  • 22mm Magnetic Y-Strainer for Plumbing and Heating Systems

    22mm Magnetic Y-Strainer for Plumbing and Heating Systems

    £9.99
    £9.99
    Price excluding VAT: £8.33

    A step up from a standard Y-strainer. The 22mm Magnetic Y-Strainer combines mechanical filtration with a magnetic core that captures ferrous particles, the kind that standard...
  • 28mm Magnetic Y-Strainer for Plumbing and Heating Systems

    28mm Magnetic Y-Strainer for Plumbing and Heating Systems

    £10.99
    £10.99
    Price excluding VAT: £9.16

    Bigger pipework deserves the same level of protection. The 28mm Magnetic Y-Strainer combines mechanical filtration with a magnetic element that pulls ferrous particles and metallic debris...
  • 22mm 2 Port Motorised Zone Valve | Spring Return | 230V

    22mm 2 Port Motorised Zone Valve | Spring Return | 230V

    £29.99
    £29.99
    Price excluding VAT: £24.99

    Zone control done properly. The 22mm 2 Port Motorised Zone Valve gives you automatic, reliable control over individual heating circuits, whether that's a central heating zone,...
  • 28mm 2 Port Motorised Zone Valve | Spring Return | 230V

    28mm 2 Port Motorised Zone Valve | Spring Return | 230V

    £34.99
    £34.99
    Price excluding VAT: £29.16

    Built for 28mm pipework where the 22mm version just won't do. The 28mm 2 Port Motorised Zone Valve delivers automatic, spring-return control over individual heating zones...
  • Replacement Actuator Head for 2 Port Motorised Zone Valves

    Replacement Actuator Head for 2 Port Motorised Zone Valves

    £19.99
    £19.99
    Price excluding VAT: £16.66

    When the valve body is still sound but the actuator has given up, there's no need to replace the whole assembly. This Replacement Actuator Head for...
  • 15mm Automatic Air Vent for Central Heating Systems

    15mm Automatic Air Vent for Central Heating Systems

    £3.99
    £3.99
    Price excluding VAT: £3.33

    Trapped air in a heating system is a quiet efficiency killer. The 15mm Automatic Air Vent takes care of it without any manual intervention, continuously purging...
  • 1/2" Automatic Air Vent with Check Valve | Sealed Heating Systems

    1/2" Automatic Air Vent with Check Valve | Sealed Heating Systems

    £4.49
    £4.49
    Price excluding VAT: £3.74

    Keeping a sealed heating system free of trapped air is straightforward with the right components. The 1/2" Automatic Air Vent with Check Valve purges air pockets...
  • 15mm Full Bore Lever Ball Valve | Compression | WRAS Approved

    15mm Full Bore Lever Ball Valve | Compression | WRAS Approved

    £4.99
    £4.99
    Price excluding VAT: £4.16

    A well-built isolation valve you can reach for with confidence. The 15mm Full Bore Lever Ball Valve uses compression connections on both ends and delivers a...
  • 22mm Full Bore Lever Ball Valve | Compression | WRAS Approved

    22mm Full Bore Lever Ball Valve | Compression | WRAS Approved

    £6.99
    £6.99
    Price excluding VAT: £5.83

    A reliable isolation valve built for the demands of everyday plumbing. The 22mm Full Bore Lever Ball Valve features 22mm compression connections on both ends and...
  • 28mm Full Bore Lever Ball Valve | Compression | WRAS Approved

    28mm Full Bore Lever Ball Valve | Compression | WRAS Approved

    £9.49
    £9.49
    Price excluding VAT: £7.91

    When a 28mm line needs a dependable shut-off, this valve delivers. The 28mm Full Bore Lever Ball Valve uses compression connections on both ends and a...
  • A Expansion Vessel Service Valve for Safe Group Installations and brass threaded connectors, shown on a solid white background.
    A Expansion Vessel Service Valve for Safe Group Installations and brass threaded connectors, shown on a solid white background.

    Expansion Vessel Service Valve for Safe Group Installations

    £6.99
    £6.99
    Price excluding VAT: £5.83

    Servicing an expansion vessel is a lot easier when you can isolate it without draining the whole system. The Expansion Vessel Service Valve for Safe Group installations...
  • 15 x 22mm Straight Plastic Tundish

    15 x 22mm Straight Plastic Tundish

    £9.99
    £9.99
    Price excluding VAT: £8.33

    15 x 22mm Straight Plastic Tundish A straight plastic tundish with a 15 x 22mm connection. Check the connection size against your installation requirements when selecting...
  • A black plastic tundish, a component used in plumbing systems to prevent backflow, with visible connection points.
    A black plastic tundish, a component used in plumbing systems to prevent backflow, with visible connection points.

    22 x 28mm Straight Plastic Tundish

    £10.99
    £10.99
    Price excluding VAT: £9.16

    Specification Connection 22 x 28mm If you are interested in purchasing in bulk please get in touch with us at support@arcanu.com or fill out an enquiry form here.
  • Expansion Vessel Mounting Bracket for 5-24 Litre Vessels

    Expansion Vessel Mounting Bracket for 5-24 Litre Vessels

    £5.49
    £5.49
    Price excluding VAT: £4.58

    Expansion Vessel Mounting Bracket for 5-24 Litre Vessels Secure your expansion vessel in place with this mounting bracket for 5-24 litre vessels. Supplied with a strap,...
  • 7" Dual Safety Rod Thermostat for Immersion Heaters 49020307

    7" Dual Safety Rod Thermostat for Immersion Heaters 49020307

    £7.18
    £7.18
    Price excluding VAT: £5.98

    The 7" Dual Safety Rod Thermostat is expertly designed for optimal temperature control. A Thermostat on a cylinder is used to regulate the temperature by turning...
  • Tesla 11" Dual Safety Rod Thermostat for Immersion Heaters TS225

    Tesla 11" Dual Safety Rod Thermostat for Immersion Heaters TS225

    £12.99
    £12.99
    Price excluding VAT: £10.83

    The Tesla 11" Dual Safety Rod Thermostat is expertly designed for optimal temperature control. A Thermostat on a cylinder is used to regulate the temperature by...
  • A blue and gold Tesla 18 inch Dual Safety Rod Thermostat for immersion heaters with a red adjustment knob.
    A blue and gold Tesla 18 inch Dual Safety Rod Thermostat for immersion heaters with a red adjustment knob.

    Tesla 18 Inch Dual Safety Rod Thermostat for Immersion Heaters TS230

    £7.19
    £7.19
    Price excluding VAT: £5.99

    Tesla 18 Inch Dual Safety Rod Thermostat for Immersion Heaters The Tesla TS230 dual safety rod thermostat helps regulate cylinder temperature by switching off the heat...
  • Full RTS-3 11" Rod Thermostat Suitable Alternative to TSR & TSE on White Background
    Full RTS-3 11" Rod Thermostat Suitable Alternative to TSR & TSE on White Background

    RTS-3 11 Inch Immersion Heater Rod Thermostat | TSR/TSE Alternative

    £12.99
    £12.99
    Price excluding VAT: £10.83

    RTS-3 11 Inch Immersion Heater Rod Thermostat The RTS-3 rod thermostat provides precise temperature control for domestic and commercial unvented hot water systems. It monitors water...
  • An 11-inch white thermostat cylinder with a blue adjustment knob, used for regulating temperature by turning off the heat source when the set temperature has been reached.
    An 11-inch white thermostat cylinder with a blue adjustment knob, used for regulating temperature by turning off the heat source when the set temperature has been reached.

    11" TSR Immersion Heater Thermostat

    £19.47
    £19.47
    Price excluding VAT: £16.23

    11" TSR Immersion Heater Thermostat Keep your hot water cylinder running safely and efficiently with this precision-engineered immersion heater thermostat. It cuts heat at the set...
  • 2 Litre Potable Expansion Vessel Suitable Replacement for Zilmet, Ariston, Copperform & Reflex

    2 Litre Potable Expansion Vessel Suitable Replacement for Zilmet, Ariston, Copperform & Reflex

    £21.99
    £21.99
    Price excluding VAT: £18.33

    Description The Expansion Vessel is crucial for regulating pressure levels in a system by absorbing excess pressure from the boiler or cylinder. Our 2 Litre Potable...