Adaptor for fitting a Drayton Wiser head to a Pegler or Regis TRV body.  ..

Pipe Conduit for sleeving underfloor heating pipe up to 19mm in diameter. 50m for the price of 25m! 25m Roll Black 24mm outer diameter          ..

Proportional thermal actuator 0-10V 0-10V DC 24V AC Normally Closed M30x1.5 Thread Replaces AA5030, AA5003, AA5004..

Pump extension for replacing a 180mm pump with a modern 130mm pump...

Spanner for removing radiator tails and bleed valves Fits 3/8" and 10mm square section radiator vent plugs and bleed screws. Ideal for use with valve tails that cannot be removed using a ordinar..

Replacement Battery for Danfoss Randall MK8 series including: 811, 851, 852, 841, 842 Please check your programmers battery is removable before purchasing Note: this battery is used as a backup..

Replacement Battery for Honeywell ST699B programmers. Please check your programmers battery is removable before purchasing Note: this battery is used as a backup during a power failure it does n..

Replacement Heads for Barlo or Giacomini TRV's They have also been badged as Tower, Boss and Harp Replaces any TRV head badged Giacomini, Barlo, Tower, Boss or Harp that fixes to the body by eit..

Single Gang Pressed Steel Box 35mm Deep Complies with BS4662 Ideal for flush mounting of: Horstmann E15 Boost Timer Horstmann E30 Boost Timer Horstmann E246 Boost Timer    ..

Single Gang Surface Mounted Patress Box 45mm Deep..

Power Relay (contactor) Ideal for use with heating systems. For example: Changing a SMC programmer Switching a high current load with a low current thermostat or timer Coil: 230VAC N.O...

M30x1.5 Thread. Suitable for use with: Honeywell HR80 CM Zone radiator controllers. Pegler I-Temp Programmable TRVs. Multi-Fit Thermal Actuators. Loose packed   &nb..