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  • Cast Iron Radiator Adaptors Image
  • Cast Iron Radiator Adaptors Image
  • Cast Iron Radiator Adaptors Image
  • Cast Iron Radiator Adaptors Image

Cast Iron Radiator Adaptors

Top Quality, Low Cost Adaptors

We stock a wide range of adaptors and reducers. These products give you the freedom to connect your Cast Iron Radiator to your heating system, These adaptors can also be used to connect each part of your heating system (pipes, valves and radiators).

    • Microbore Adaptors: These are used to make a 15mm inlet smaller to correspond with 10mm or 8mm pipework.
    • 3/4" to 1/2" Adaptors: This adaptor is used to decrease the size of a 3/4" connection to a 1/2" connection to correspond with 1/2" pipe work. These are available as a Single or a Pair.
    • 3/4" Couplers: These are used to increase the size of a valve outlet from a 1/2" outlet to a 3/4" outlet to fit a larger radiator outlet. These are available as a Single or a Pair.
    • 22mm Compression Adaptors: This adaptor is used to increase the size of a 15mm inlet to a inlet to suit the pipework.

These adapters are available in a variety of finishes, allowing you to customise many of the valves we sell to suit your needs.

If you need any advice please check our Buying Guide or call a member of our friendly Sales Team.

All Products:

  • 34% off MSRP
    A-ADP-506-22-OEB - 506 Compression Adaptor 22mm Old English Brass

    22mm Compression Radiator Valve Adaptor - Old English Brass

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.105Weight Boxed (kg):0.105Compression...
    A-ADP-506-22-OEB
    AntiquedBrassBrushed
    Next Working Day
    MSRP: £8.35
    Price: £5.45
    Save:£2.90

    (0)

  • A-ADP-505-8-B - 505 Microbore Adapter 15mm to 8mm

    15mm to 8mm Microbore Radiator Valve Adaptor

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):13Width (mm):18Depth (mm):18Weight Product (kg):0.01Weight Boxed (kg):0.01Style:Brass reducing adapterFitting Size:Designed to fit 15mm valves and reduce down to...
    A-ADP-505-8-B
    BrassPolished
    Next Working Day
    MSRP: £1.70
    Price: £1.44
    Save:£0.26

    (0)

  • 34% off MSRP
    A-ADP-506-22-PEW - 506 Compression Adaptor 22mm Pewter

    22mm Compression Radiator Valve Adaptor - Pewter

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.105Weight Boxed (kg):0.105Compression...
    A-ADP-506-22-PEW
    AnthraciteAntiquedGreyPewter
    Next Working Day
    MSRP: £8.35
    Price: £5.45
    Save:£2.90

    (0)

  • 51% off MSRP
    A-ADP-505-10-B - 505 Microbore Adapter 15mm to 10mm

    15mm to 10mm Microbore Radiator Valve Adaptor

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):10Width (mm):18Depth (mm):18Weight Product (kg):0.01Weight Boxed (kg):0.01Style:Brass reducing adapterFitting Size:Designed to fit 15mm valves and reduce down to...
    A-ADP-505-10-B
    BrassPolished
    Next Working Day
    MSRP: £2.66
    Price: £1.30
    Save:£1.36

    (0)

  • 29% off MSRP
    A-ADP-506-22-AB - 506 Compression Adaptor 22mm Antique Brass

    22mm Compression Radiator Valve Adaptor - Antique Brass

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.105Weight Boxed (kg):0.105Compression...
    A-ADP-506-22-AB
    AntiquedBrassBrushed
    Next Working Day
    MSRP: £7.75
    Price: £5.45
    Save:£2.30

    (0)

  • 34% off MSRP
    A-ADP-506-34-OEB - 506 3/4 inch Coupler Adaptor Old English Brass

    3/4 inch Coupler Radiator Valve Adaptor - Old English Brass

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.07Weight Boxed (kg):0.07Radiator Coupler:¾”...
    A-ADP-506-34-OEB
    AntiquedBrassBrushed
    Next Working Day
    MSRP: £7.60
    Price: £4.96
    Save:£2.64

    (0)

  • 29% off MSRP
    A-ADP-506-34-SN - 506 3/4 inch Coupler Adaptor Satin Nickel

    3/4 inch Coupler Adaptor - Brushed Satin Nickel

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.07Weight Boxed (kg):0.07Radiator Coupler:¾”...
    A-ADP-506-34-SN
    BrushedGreyNickelSatin Nickel
    Next Working Day
    MSRP: £7.00
    Price: £4.96
    Save:£2.04

    (0)

  • 21% off MSRP
    A-ADP-506-X2-C - 506 3/4 inch to 1/2 inch Adaptors Chrome (Pair)

    3/4 inch to 1/2 inch Radiator Valve Adaptors - Chrome (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):13Width (mm):31Depth (mm):27Weight Product (kg):0.04Weight Boxed (kg):0.04Style:Pair of ¾” to ½” reducersThreaded Inlet(s):½” BSPP - FemaleInternal Thread...
    A-ADP-506-X2-C
    Chrome
    Next Working Day
    MSRP: £11.40
    Price: £8.93
    Save:£2.47

    (0)

  • 29% off MSRP
    A-ADP-506-34-AB - 506 3/4 inch Coupler Adaptor Antique Brass

    3/4 inch Coupler Radiator Valve Adaptor - Antique Brass

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.07Weight Boxed (kg):0.07Radiator Coupler:¾”...
    A-ADP-506-34-AB
    AntiquedBrassBrushed
    Next Working Day
    MSRP: £7.00
    Price: £4.96
    Save:£2.04

    (0)

  • 22% off MSRP
    A-ADP-506-X2-B - 506 3/4 inch to 1/2 inch Adaptors Brass (Pair)

    3/4 inch to 1/2 inch Radiator Valve Adaptors - Brass (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):13Width (mm):31Depth (mm):27Weight Product (kg):0.04Weight Boxed (kg):0.04Style:Pair of ¾” to ½” reducersThreaded Inlet(s):½” BSPP - FemaleInternal Thread...
    A-ADP-506-X2-B
    BrassPolished
    Next Working Day
    MSRP: £11.52
    Price: £8.93
    Save:£2.59

    (0)

  • 29% off MSRP
    A-ADP-506-22-SN - 506 Compression Adaptor 22mm Satin Nickel

    22mm Compression Adaptor - Brushed Satin Nickel

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.105Weight Boxed (kg):0.105Compression...
    A-ADP-506-22-SN
    BrushedGreyNickelSatin Nickel
    Next Working Day
    MSRP: £7.75
    Price: £5.45
    Save:£2.30

    (0)

  • 22% off MSRP
    A-ADP-506-B - 506 3/4 inch to 1/2 inch Adapter Brass

    3/4 inch to 1/2 inch Radiator Valve Adaptor - Brass

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):13Width (mm):31Depth (mm):27Weight Product (kg):0.02Weight Boxed (kg):0.02Style:Single ¾” to ½” reducerThreaded Inlet(s):½” BSPP - FemaleInternal Thread...
    A-ADP-506-B
    BrassPolished
    Next Working Day
    MSRP: £5.76
    Price: £4.46
    Save:£1.30

    (0)

  • 21% off MSRP
    A-ADP-506-C - 506 3/4 inch to 1/2 inch Adapter Chrome

    3/4 inch to 1/2 inch Radiator Valve Adaptor - Chrome

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):13Width (mm):31Depth (mm):27Weight Product (kg):0.02Weight Boxed (kg):0.02Style:Single ¾” to ½” reducerThreaded Inlet(s):½” BSPP - FemaleInternal Thread...
    A-ADP-506-C
    Chrome
    Next Working Day
    MSRP: £5.70
    Price: £4.46
    Save:£1.24

    (0)

  • 29% off MSRP
    A-ADP-506-34-X2-SN - 506 3/4 inch Coupler Adaptors Satin Nickel (Pair)

    506 3/4 inch Coupler Adaptors - Brushed Satin Nickel (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.14Weight Boxed (kg):0.14Style:FixedRadiator...
    A-ADP-506-34-X2-SN
    BrushedGreyNickelSatin Nickel
    Next Working Day
    MSRP: £13.99
    Price: £9.91
    Save:£4.08

    (0)

  • 34% off MSRP
    A-ADP-506-22-C - 506 Compression Adapter 22mm Chrome

    22mm Compression Radiator Valve Adaptor - Chrome

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.105Weight Boxed (kg):0.105Style:FixedCompression...
    A-ADP-506-22-C
    Chrome
    Next Working Day
    MSRP: £8.35
    Price: £5.45
    Save:£2.90

    (0)

  • 34% off MSRP
    A-ADP-506-34-PEW - 506 3/4 inch Coupler Adaptor Pewter

    3/4 inch Coupler Radiator Valve Adaptor - Pewter

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.07Weight Boxed (kg):0.07Radiator Coupler:¾”...
    A-ADP-506-34-PEW
    AnthraciteAntiquedGreyPewter
    Next Working Day
    MSRP: £7.60
    Price: £4.96
    Save:£2.64

    (0)

  • 34% off MSRP
    A-ADP-506-34-X2-PW - 506 3/4 inch Coupler Adaptors Light Pewter (Pair)

    3/4 inch Coupler Radiator Valve Adaptors - Light Pewter (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordWeight Product (kg):0.15Radiator Coupler:¾” BSPT - MaleMaterial:BrassFinish:Light PewterWarranty:6 year...
    A-ADP-506-34-X2-PW
    AnthraciteAntiquedGreyPewter
    Next Working Day
    MSRP: £15.19
    Price: £9.91
    Save:£5.28

    (0)

  • 34% off MSRP
    A-ADP-506-34-X2-OEB - 506 3/4 inch Coupler Adaptors Old English Brass (Pair)

    3/4 inch Coupler Radiator Valve Adaptors - Old English Brass (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.14Weight Boxed (kg):0.14Style:FixedRadiator...
    A-ADP-506-34-X2-OEB
    AntiquedBrassBrushed
    Next Working Day
    MSRP: £15.19
    Price: £9.91
    Save:£5.28

    (0)

  • 29% off MSRP
    A-ADP-506-22-X2-SN - 506 Compression Adaptors 22mm Satin Nickel (Pair)

    22mm Compression Adaptors - Brushed Satin Nickel (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.21Weight Boxed (kg):0.21Style:FixedCompression...
    A-ADP-506-22-X2-SN
    BrushedGreyNickelSatin Nickel
    Next Working Day
    MSRP: £15.50
    Price: £10.90
    Save:£4.60

    (0)

  • 34% off MSRP
    A-ADP-506-22-X2-C - 506 Compression Adaptors 22mm Chrome (Pair)

    22mm Compression Radiator Valve Adaptors - Chrome (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.21Weight Boxed (kg):0.21Style:FixedCompression...
    A-ADP-506-22-X2-C
    Chrome
    Next Working Day
    MSRP: £16.70
    Price: £10.90
    Save:£5.80

    (0)

  • 34% off MSRP
    A-ADP-506-22-X2-PEW - 506 Compression Adaptors 22mm Pewter (Pair)

    22mm Compression Radiator Valve Adaptors - Pewter (Pair)

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.21Weight Boxed (kg):0.21Style:FixedCompression...
    A-ADP-506-22-X2-PEW
    AnthraciteAntiquedGreyPewter
    Next Working Day
    MSRP: £16.70
    Price: £10.90
    Save:£5.80

    (0)

  • 34% off MSRP
    A-ADP-506-34-C - 506 3/4 inch Coupler Adaptor Chrome

    3/4 inch Coupler Radiator Valve Adaptor - Chrome

    Brand: Radiator Valves 4uRange: AdaptorsType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):33Width (mm):30Depth (mm):30Weight Product (kg):0.07Weight Boxed (kg):0.07Style:FixedRadiator...
    A-ADP-506-34-C
    Chrome
    Next Working Day
    MSRP: £7.60
    Price: £4.96
    Save:£2.64

    (0)

  • 51% off MSRP
    A-ADP-505-10-X2-B - 505 Microbore Adaptor 15mm to 10mm -Pair

    15mm to 10mm Microbore Radiator Valve Adaptor - Pair

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterHeight (mm):10Width (mm):18Depth (mm):18Weight Product (kg):0.02Weight Boxed (kg):0.02Style:Brass reducing adapterFitting Size:Designed to fit 15mm valves and reduce down to...
    A-ADP-505-10-X2-B
    BrassPolished
    Next Working Day
    MSRP: £5.33
    Price: £2.59
    Save:£2.74

    (0)

  • 34% off MSRP
    A-ADP-506-22-PW - 506 Compression Adaptor 22mm Light Pewter

    22mm Compression Radiator Valve Adaptor - Light Pewter

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordWeight Product (kg):0.10Weight Boxed (kg):0.115Style:FixedCompression Inlet(s):22mmMaterial:BrassFinish:Light...
    A-ADP-506-22-PW
    AnthraciteAntiquedGreyPewter
    Next Working Day
    MSRP: £8.35
    Price: £5.45
    Save:£2.90

    (0)

  • 29% off MSRP
    A-ADP-506-22-UB - 506 Compression Adaptor 22mm - Unlacquered Brass

    22mm Compression Radiator Valve Adaptor - Unlacquered Brass

    Brand: Radiator Valves 4uRange: AccessoryType: Radiator Valve Accessory > AdapterCompatible Ranges:Arlington / Alfriston / Chastleton / RuffordHeight (mm):39Width (mm):31Depth (mm):32Weight Product (kg):0.105Weight Boxed (kg):0.105Compression...
    A-ADP-506-22-UB
    39
    31
    AntiquedBrass
    Next Working Day
    MSRP: £7.75
    Price: £5.45
    Save:£2.30

    (0)

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