Toggle menu
  • Support : 01452 238287 | Email: enquiry@ondemandsupplies.co.uk
  • FREE Delivery over £50
  • Sign in or Register
  • Compare
  • Cart 0
On-Demand Supplies
Categories
  • Copper Plumbing Fittings
    • All Copper Plumbing Fittings
    • End Feed Elbows & Bends
    • End Feed Couplings
    • End Feed Fitting Reducers
    • End Feed Tees
    • End Feed Tank & Tap Connectors
    • End Feed Stop Ends
    • End Feed Crossovers
    • End Feed Adapters
    • End Feed Wallplate Fittings
    • Solder Ring Elbows & Bends
    • Solder Ring Couplings
    • Solder Ring Fitting Reducers
    • Solder Ring Tees
    • Solder Ring Tank & Tap Connectors
    • Solder Ring Stop Ends
    • Solder Ring Crossovers
    • Solder Ring Adapters
    • Solder Ring Wallplate Fittings
  • Compression & Threaded Brass Fittings
    • All Compression & Threaded Brass Fittings
    • Brass & Chrome Compression Couplings
    • Brass & Chrome Compression Elbows
    • Brass & Chrome Compression Reducers
    • Brass & Chrome Tees
    • Brass and Chrome Tap & Tank Connectors
    • Compression Pipe Olives
    • Compression Adapters
    • Draw Off Cocks
    • Brass Plumbing Manifolds
    • Brass Lead Fittings
    • Brass Threaded Elbows
    • Brass Threaded Plugs & Sockets
    • Brass Threaded Bushes & Backnuts
    • Brass & Chrome Nipples & Extensions
    • Brass & Chrome Threaded Pipe Caps
    • Brass & Chrome Stop Ends
  • Plumbing Valves & Flexible Hoses
    • All Plumbing Valves & Flexible Hoses
    • Outdoor Taps & Bib Taps
    • Check Valves
    • Float Valves
    • Gate Valves
    • Isolation & Service Valves
    • Lever Ball Valves
    • Pump Fittings & Strainers
    • Stop Cocks
    • Washing Machine Hoses & Valves
    • Water Meters
    • Thermostatic Mixing Valves
    • Water & Float Switches
    • Oil Filters & Aerators
    • Fire Valves
    • Flared Fittings
    • Non-Return Valves
    • Oil Gauges & Pipe
    • Flexible Tap Connectors
  • Push Fit Plumbing Fittings
    • All Push Fit Plumbing Fittings
    • JG Speedfit White Push Fit
    • JG Speedfit Blue MDPE
    • Polyplumb Grey Push Fit
    • Hep2o White Fittings
    • FloPlast MPDE Compression
    • Plasson MDPE Compression
    • PlassONE MDPE Push Fit
    • Talbot MDPE Push Fit
    • Plastic Water Pipes
  • Central Heating & Water Treatment
    • All Central Heating & Water Treatment
    • Cylinder Flanges & Plugs
    • Immersion Heaters & Thermostats
    • Central Heating Pumps
    • Pipe & Cylinder Insulation
    • Central Heating Safety Valves
    • Pressure Reducing Valves
    • Filling Loops & Valves
    • Underfloor Heating Controls
    • Radiator Valves
    • Radiator Plugs & Keys
    • Radiator Valve Extensions
    • Central Heating Treatment
    • Water Treatment
    • Underfloor Heating Accessories
    • Water Filters & Limescale Inhibitors
  • Ventilation
    • All Ventilation
    • Round Rigid Ducting Fittings
    • Rectangle Rigid Ducting Fittings
    • Outdoor Vent Cowls
    • Cavity Liners & Airbricks
    • Cooker Hood Kits
    • Flexible Duct Hoses & Fixings
    • Core Drill Vents
    • Through Wall Vents
    • Floor Vents
    • Louvre Vent Grills
    • Wall & Door Vents
    • Soffit Vents
    • Hit & Miss Vents
  • Gas Pipe Fittings
    • All Gas Pipe Fittings
    • CSST Gas Pipe Fittings & Kits
    • Gas Cocks & Ball Valves
    • Gas Connections & Hoses
    • Gas Tape & Sealants
    • MGT Gas Test Fittings
    • Gas Restrictors & Floor Plates
    • Flue Terminal Guards
  • Indoor & Outdoor Drainage
    • All Indoor & Outdoor Drainage
    • Indoor Drainage
      • Compression Waste Pipe Fittings
      • Overflow Pipe & Fittings
      • Push Fit Waste Pipe Fittings
      • Sink Waste Kits
      • Solvent Waste Pipe Fittings
      • Waste Traps
      • Boiler Condensate Fittings
      • Toilet Pan Connectors
      • Shower Gulleys
      • Sink Waste Grilles
      • Bath Waste Grilles
      • Basin Waste Grilles
      • Shower Waste Grilles
      • Plumbing Kits
    • Outdoor Drainage
      • Half Round Gutter Fittings
      • Square Line Gutter Fittings
      • Round Downpipe Fittings
      • Square Downpipe Fittings
      • Gutter Fittings
      • Outdoor Air Admittance Valves
      • Drain Connectors
      • Push Fit Soil Pipe Fittings
      • Solvent Soil Pipe Fittings
  • Plumbing Tools & Consumables
    • All Plumbing Tools & Consumables
    • Solder, Solder Mats & Plumbing Flux
    • Pipe Cleaning & Unblocking
    • Plumbing Adhesives
    • Joint Sealants & Putty
    • Gas & Leak Detectors
    • Fire Cement
    • Brass Plumbing Fixings
    • Pipe Bending Tools
    • Pipe Cutting Tools
    • Gas Torches & Spares
    • Manometers & Pressure Tests
    • General Plumbing Tools
    • Plumbing Keys & Spanners
    • Plumbing Tape
    • Plumbing Lubricants
    • Steel Fixings & Jubilee Clips
  • Toilet & Shower Spares
    • All Toilet & Shower Spares
    • Flush Handles & Chains
    • Toilet Flush Pipes
    • Toilet Cisterns
    • Toilet Fill Valves
    • Toilet Flush Valves & Siphons
    • Toilet Seats
    • Urinal Parts
    • Toilet Cistern Repair Washers
    • Shower Heads & Hoses
    • Shower Mixing Valves
    • Basin & Sink Supports
    • Tap & Cistern Plug Stoppers
    • Bath & Sink Plugs and Chains
    • Tap Fixings
    • Tap Repair Washers
    • Taps
  • COVID-19
  • Payment Methods & Privacy
  • Shipping Information
  • Contact Us
  • Blog
  • Sign in or Register
  • Home
  • Central Heating & Water Treatment
Categories
  • Copper Plumbing Fittings
    • End Feed Elbows & Bends
    • End Feed Couplings
    • End Feed Fitting Reducers
    • End Feed Tees
    • End Feed Tank & Tap Connectors
    • End Feed Stop Ends
    • End Feed Crossovers
    • End Feed Adapters
    • End Feed Wallplate Fittings
    • Solder Ring Elbows & Bends
    • Solder Ring Couplings
    • Solder Ring Fitting Reducers
    • Solder Ring Tees
    • Solder Ring Tank & Tap Connectors
    • Solder Ring Stop Ends
    • Solder Ring Crossovers
    • Solder Ring Adapters
    • Solder Ring Wallplate Fittings
  • Compression & Threaded Brass Fittings
    • Brass & Chrome Compression Couplings
    • Brass & Chrome Compression Elbows
    • Brass & Chrome Compression Reducers
    • Brass & Chrome Tees
    • Brass and Chrome Tap & Tank Connectors
    • Compression Pipe Olives
    • Compression Adapters
    • Draw Off Cocks
    • Brass Plumbing Manifolds
    • Brass Lead Fittings
    • Brass Threaded Elbows
    • Brass Threaded Plugs & Sockets
    • Brass Threaded Bushes & Backnuts
    • Brass & Chrome Nipples & Extensions
    • Brass & Chrome Threaded Pipe Caps
    • Brass & Chrome Stop Ends
  • Plumbing Valves & Flexible Hoses
    • Outdoor Taps & Bib Taps
    • Check Valves
    • Float Valves
    • Gate Valves
    • Isolation & Service Valves
    • Lever Ball Valves
    • Pump Fittings & Strainers
    • Stop Cocks
    • Washing Machine Hoses & Valves
    • Water Meters
    • Thermostatic Mixing Valves
    • Water & Float Switches
    • Oil Filters & Aerators
    • Fire Valves
    • Flared Fittings
    • Non-Return Valves
    • Oil Gauges & Pipe
    • Flexible Tap Connectors
  • Push Fit Plumbing Fittings
    • JG Speedfit White Push Fit
    • JG Speedfit Blue MDPE
    • Polyplumb Grey Push Fit
    • Hep2o White Fittings
    • FloPlast MPDE Compression
    • Plasson MDPE Compression
    • PlassONE MDPE Push Fit
    • Talbot MDPE Push Fit
    • Plastic Water Pipes
  • Central Heating & Water Treatment
    • Cylinder Flanges & Plugs
    • Immersion Heaters & Thermostats
    • Central Heating Pumps
    • Pipe & Cylinder Insulation
    • Central Heating Safety Valves
    • Pressure Reducing Valves
    • Filling Loops & Valves
    • Underfloor Heating Controls
    • Radiator Valves
    • Radiator Plugs & Keys
    • Radiator Valve Extensions
    • Central Heating Treatment
    • Water Treatment
    • Underfloor Heating Accessories
    • Water Filters & Limescale Inhibitors
  • Ventilation
    • Round Rigid Ducting Fittings
    • Rectangle Rigid Ducting Fittings
    • Outdoor Vent Cowls
    • Cavity Liners & Airbricks
    • Cooker Hood Kits
    • Flexible Duct Hoses & Fixings
    • Core Drill Vents
    • Through Wall Vents
    • Floor Vents
    • Louvre Vent Grills
    • Wall & Door Vents
    • Soffit Vents
    • Hit & Miss Vents
  • Gas Pipe Fittings
    • CSST Gas Pipe Fittings & Kits
    • Gas Cocks & Ball Valves
    • Gas Connections & Hoses
    • Gas Tape & Sealants
    • MGT Gas Test Fittings
    • Gas Restrictors & Floor Plates
    • Flue Terminal Guards
  • Indoor & Outdoor Drainage
    • Indoor Drainage
      • Compression Waste Pipe Fittings
      • Overflow Pipe & Fittings
      • Push Fit Waste Pipe Fittings
      • Sink Waste Kits
      • Solvent Waste Pipe Fittings
      • Waste Traps
      • Boiler Condensate Fittings
      • Toilet Pan Connectors
      • Shower Gulleys
      • Sink Waste Grilles
      • Bath Waste Grilles
      • Basin Waste Grilles
      • Shower Waste Grilles
      • Plumbing Kits
    • Outdoor Drainage
      • Half Round Gutter Fittings
      • Square Line Gutter Fittings
      • Round Downpipe Fittings
      • Square Downpipe Fittings
      • Gutter Fittings
      • Outdoor Air Admittance Valves
      • Drain Connectors
      • Push Fit Soil Pipe Fittings
      • Solvent Soil Pipe Fittings
  • Plumbing Tools & Consumables
    • Solder, Solder Mats & Plumbing Flux
    • Pipe Cleaning & Unblocking
    • Plumbing Adhesives
    • Joint Sealants & Putty
    • Gas & Leak Detectors
    • Fire Cement
    • Brass Plumbing Fixings
    • Pipe Bending Tools
    • Pipe Cutting Tools
    • Gas Torches & Spares
    • Manometers & Pressure Tests
    • General Plumbing Tools
    • Plumbing Keys & Spanners
    • Plumbing Tape
    • Plumbing Lubricants
    • Steel Fixings & Jubilee Clips
  • Toilet & Shower Spares
    • Flush Handles & Chains
    • Toilet Flush Pipes
    • Toilet Cisterns
    • Toilet Fill Valves
    • Toilet Flush Valves & Siphons
    • Toilet Seats
    • Urinal Parts
    • Toilet Cistern Repair Washers
    • Shower Heads & Hoses
    • Shower Mixing Valves
    • Basin & Sink Supports
    • Tap & Cistern Plug Stoppers
    • Bath & Sink Plugs and Chains
    • Tap Fixings
    • Tap Repair Washers
    • Taps
Refine by
No filters applied
Browse by Product Type, *Category* & more Hide Filters Show Filters
Product Type
  • Radiator Valve (50)
  • Pressure Valve (20)
  • Underfloor Heating (17)
  • Limescale Treatment (13)
  • Air Vent (11)
  • Filing Loop (8)
  • Immersion Heater (6)
  • Inhibitor (6)
  • Cleaner (4)
  • Testing (4)
  • Zone Valve (4)
  • Insulation (3)
  • Leak Sealer (3)
  • Pump (3)
  • Thermocouples (3)
Show More
*Category*
  • Central Heating (130)
  • Water Treatment (39)
Pipe Size
  • 15mm (40)
  • 22mm (14)
  • 10mm (8)
  • 8mm (4)
Thread Size
  • 1/2 Inch BSP (52)
  • 1/4 Inch BSP (9)
  • 3/4 Inch BSP (8)
  • 2 1/4 Inch BSP (3)
  • 3/8 Inch BSP (3)
  • 1/8 Inch BSP (2)
  • 1 1/4 Inch BSP (1)
Brand
  • Primaflow (46)
  • Optima (19)
  • Watts (19)
  • MSL (17)
  • Fernox (15)
Show More
Faster Delivery, Available Today

Central Heating & Water Treatment

  • Cylinder Flanges & Plugs

    Cylinder Flanges & Plugs

    > View Now <
  • Immersion Heaters & Thermostats

    Immersion Heaters & Thermostats

    > View Now <
  • Central Heating Pumps

    Central Heating Pumps

    > View Now <
  • Pipe & Cylinder Insulation

    Pipe & Cylinder Insulation

    > View Now <
  • Central Heating Safety Valves

    Central Heating Safety Valves

    > View Now <
  • Pressure Reducing Valves

    Pressure Reducing Valves

    > View Now <
  • Filling Loops & Valves

    Filling Loops & Valves

    > View Now <
  • Underfloor Heating Controls

    Underfloor Heating Controls

    > View Now <
  • Radiator Valves

    Radiator Valves

    > View Now <
  • Radiator Plugs & Keys

    Radiator Plugs & Keys

    > View Now <
  • Radiator Valve Extensions

    Radiator Valve Extensions

    > View Now <
  • Central Heating Treatment

    Central Heating Treatment

    > View Now <
  • Water Treatment

    Water Treatment

    > View Now <
  • Underfloor Heating Accessories

    Underfloor Heating Accessories

    > View Now <
  • Water Filters & Limescale Inhibitors

    Water Filters & Limescale Inhibitors

    > View Now <
  • 0-10 Bar Pressure Gauge - Back Connection
    Add to Cart

    0-10 Bar Pressure Gauge - Back Connection

    £10.44 INC VAT
    > View Product <
  • 0-10 Bar Pressure Gauge - Bottom Connection
    Add to Cart

    0-10 Bar Pressure Gauge - Bottom Connection

    £10.44 INC VAT
    > View Product <
  • 0-4 Bar Pressure Gauge - Back Connection 0-4 Bar Pressure Gauge - Back Connection
    Add to Cart

    0-4 Bar Pressure Gauge - Back Connection

    £10.44 INC VAT
    > View Product <
  • 0-4 Bar Pressure Gauge - Bottom Connection
    Add to Cart

    0-4 Bar Pressure Gauge - Bottom Connection

    £10.43 INC VAT
    > View Product <
  • 0-4 Bar Temperature & Pressure Gauge - Bottom Connection
    Add to Cart

    0-4 Bar Temperature & Pressure Gauge - Bottom Connection

    £25.86 INC VAT
    > View Product <
  • 0-6 Bar Pressure Gauge - Back Connection
    Add to Cart

    0-6 Bar Pressure Gauge - Back Connection

    £10.41 INC VAT
    > View Product <
  • 0-6 Bar Pressure Gauge - Bottom Connection 0-6 Bar Pressure Gauge - Bottom Connection
    Add to Cart

    0-6 Bar Pressure Gauge - Bottom Connection

    £10.41 INC VAT
    > View Product <
  • 0-6 Bar Temperature & Pressure Gauge - Bottom Connection
    Add to Cart

    0-6 Bar Temperature & Pressure Gauge - Bottom Connection

    £25.84 INC VAT
    > View Product <
  • 1/2" Auto Fill Valve with Guage - Male/Female
    Add to Cart

    1/2" Auto Fill Valve with Guage - Male/Female

    £33.98 INC VAT
    > View Product <
  • 1/2" Bottle Air Vent
    Add to Cart

    1/2" Bottle Air Vent

    £6.01 INC VAT
    > View Product <
  • 1/2" Brass Radiator Air Vent 1/2" Brass Radiator Air Vent
    Add to Cart

    1/2" Brass Radiator Air Vent

    £0.66 INC VAT
    > View Product <
  • 1/2" BSP Radiator Drain Off Cock Chrome
    Add to Cart

    1/2" BSP Radiator Drain Off Cock Chrome

    £3.44 INC VAT
    > View Product <
  • 1/2" Female Pressure Reducing Valve
    Add to Cart

    1/2" Female Pressure Reducing Valve

    £20.06 INC VAT
    > View Product <
  • 1/2" Stainless Steel Radiator & Towel Warmer Air Vent Plug
    Add to Cart

    1/2" Stainless Steel Radiator & Towel Warmer Air Vent Plug

    £1.47 INC VAT
    > View Product <
  • 1/2" Stainless Steel Radiator & Towel Warmer Plug
    Add to Cart

    1/2" Stainless Steel Radiator & Towel Warmer Plug

    £1.39 INC VAT
    > View Product <
  • 1/2" x 10mm Long Chrome Radiator Extension
    Add to Cart

    1/2" x 10mm Long Chrome Radiator Extension

    £1.43 INC VAT
    > View Product <
  • 1/2" x 20mm Long Chrome Radiator Extension
    Add to Cart

    1/2" x 20mm Long Chrome Radiator Extension

    £1.59 INC VAT
    > View Product <
  • 1/2" x 25mm Long Chrome Radiator Extension
    Add to Cart

    1/2" x 25mm Long Chrome Radiator Extension

    £1.69 INC VAT
    > View Product <
  • 1/2" x 50mm Long Chrome Radiator Extension
    Add to Cart

    1/2" x 50mm Long Chrome Radiator Extension

    £3.16 INC VAT
    > View Product <
  • 1/2" x 60mm Long Chrome Radiator Extension
    Add to Cart

    1/2" x 60mm Long Chrome Radiator Extension

    £4.67 INC VAT
    > View Product <
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • Next
×
Useful Links
  • COVID-19
  • About Us
  • Blog
Customer Service
  • Privacy Policy
  • Shipping Information
  • Returns Policy
  • Contact Us
Contact Info
  • ESDA Ltd
    Unit F3, Stone End Farm, Churcham Business Park
    Churcham, Gloucestershire
    GL2 8AX
  • Call us at 01452 238287
  • enquiry@ondemandsupplies.co.uk
Subscribe to our newsletter

Get the latest updates on new products and upcoming sales

Cheap Delivery
Only £2.95 for standard delivery or free for orders over £50, 1st class delivery available
Returns
30 day returns policy if you change your mind
Large Range
Over 10,000 products available
Safe Payment
Full PCS Compliant Payment Gateway or pay by Paypal
Data Protection
Compliant with GDPR Regulations for protection of your personal data

© On-Demand Supplies. Powered by BigCommerce.