15mm compression and can be 3/4 connection using 3/4 to 22mm compression adaptor ( not supplied ). Local pick up from Flitwick, Beds.
Magnetic Boiler Filter DN20, Central Heating Sludge Separator with 3/4 Inch Threaded Connection, Rust and Scale Remover for HVAC System, Brass and Plastic Dirt Trap
Magnetic Boiler Filter for Underfloor Heating Systems, Sludge Separator with Stainless Steel Mesh, DN20 DN25 DN32 Threaded Connection, Rust and Scale Remover for HVAC(DN25)
Industrial Water Filter Boiler - 9.84 Inch Stainless Steel Filter Element | DN20 DN32 Threaded Connection - PP And Brass Boiler Filter For Rust Limestone Removal
Magnetic Boiler Filter for Central Heating Systems, Wall Mounted Sludge Separator,with Stainless Steel Mesh, DN20 DN25 Threaded Connection,Rust and Scale Removal, for Underfloor Heating(DN25)
Magnetic Boiler Filter for Central Heating Systems, Wall Mounted Sludge Separator with DN20 DN25 Threaded Connection, Rust and Scale Removal for Underfloor(DN25)
Reina Modal TRV Thermostatic Radiator Valves 15mm and LockShield Designs