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  2. John Guest *
  3. Adaptors and Reducers *

Adaptors and Reducers *

[PI251008S] John Guest Tube to Hose Stem Adaptor 5/16" x 1/4"

John Guest Tube to Hose Stem Adaptor 5/16" x 1/4"

Genuine John Guest Part
Stem OD: 5/16"
Hose ID: 1/4"
£ 0.82
[PM4508F4S] John Guest Female Adaptor 5/16" x 1/4" (FFL Thread)

John Guest Female Adaptor 5/16" x 1/4" (FFL Thread)

Genuine John Guest Part
Tube OD:  5/16"
FFL Thread: 1/4"
£ 1.75
[CM451513FS] John Guest Acetal Female Adaptor 15mm x 3/8" BSP **

John Guest Acetal Female Adaptor 15mm x 3/8" BSP **


Genuine John Guest Part.
£ 3.40
[CM451214FS] John Guest Acetal Female Adaptor 12mm x 1/2" BSP **

John Guest Acetal Female Adaptor 12mm x 1/2" BSP **


Genuine John Guest Part.
£ 3.00
[CM451213FS] John Guest Acetal Female Adaptor 12mm x 3/8" BSP **

John Guest Acetal Female Adaptor 12mm x 3/8" BSP **


Genuine John Guest Part.
£ 2.70
[CM321216E] John Guest Female Adaptor 12mm x 3/4" BSP

John Guest Female Adaptor 12mm x 3/4" BSP

Genuine John Guest Part. 
£ 3.43
[CM321014E] John Guest Acetal Black Female Adaptor 10mm x 1/2" BSP **

John Guest Acetal Black Female Adaptor 10mm x 1/2" BSP **


Genuine John Guest Part.
£ 1.90
[CM320816FE] John Guest Black Female Adaptor 8mm x 3/4" BSP **

John Guest Black Female Adaptor 8mm x 3/4" BSP **


Genuine John Guest Part.

£ 2.12
[CM320816E] John Guest Acetal Black Female Adaptor BSP 8mm x 3/4" ** CM320616E.webp

John Guest Acetal Black Female Adaptor BSP 8mm x 3/4" **

Genuine John Guest Part.
£ 2.12
[CM320616E] John Guest Acetal Black Female Adaptor BSP 6mm x 3/4" ** CM320616E.webp

John Guest Acetal Black Female Adaptor BSP 6mm x 3/4" **

Geniune John Guest Part.
£ 2.04
[CI3212U7S] John Guest Tap Adaptor 3/8″ x 7/16″ (UNS Thread)

John Guest Tap Adaptor 3/8″ x 7/16″ (UNS Thread)

Genuine John Guest Part
Tube OD: 3/8″
UNS Thread: 7/16″
£ 1.90
[CI3212U7FW] John Guest White Acetal Tap Adaptor 3/8" x 7/16" UNS **

John Guest White Acetal Tap Adaptor 3/8" x 7/16" UNS **


Genuine John Guest Part.
£ 1.85
[CI321216S] John Guest Tap Adaptor 3/8" x 3/4" (BSP Thread)

John Guest Tap Adaptor 3/8" x 3/4" (BSP Thread)

Genuine John Guest Part
Tube OD: 3/8"
BSP Thread: 3/4"
£ 2.33
[CI321216FS] John Guest Tap Adaptor Flat End 3/8″ x 3/4″ (BSP Thread)

John Guest Tap Adaptor Flat End 3/8″ x 3/4″ (BSP Thread)

Genuine John Guest Part
Tube OD: 3/8″
BSP Thread: 3/4″
£ 2.33
[CI321214S] John Guest Tap Adaptor 3/8" x 1/2" (BSP Thread)

John Guest Tap Adaptor 3/8" x 1/2" (BSP Thread)


Genuine John Guest Part.
£ 1.90
[CI3208U7S] John Guest Tap Adaptor 1/4″ x 7/16″ (UNS Thread)

John Guest Tap Adaptor 1/4″ x 7/16″ (UNS Thread)

Genuine John Guest Part
Tube OD: 1/4″
UNS Thread: 7/16″
£ 1.71
[CI320816S] John Guest Tap Adaptor 1/4″ × 3/4″ (BSP Thread)

John Guest Tap Adaptor 1/4″ × 3/4″ (BSP Thread)

Genuine John Guest Part
Tube OD: 1/4″
BSP Thread: 3/4″
£ 2.04
[CI320816FS] John Guest Tap Adaptor Flat End 1/4″ x 3/4″ (BSP Thread)

John Guest Tap Adaptor Flat End 1/4″ x 3/4″ (BSP Thread)

Genuine John Guest Part
Tube OD: 1/4″
BSP Thread: 3/4″
£ 2.04
[CI320814S] John Guest Tap Adaptor 1/4" x 1/2" (BSP Thread)

John Guest Tap Adaptor 1/4" x 1/2" (BSP Thread)


Genuine John Guest Part
Tube OD: 1/4"
BSP Thread: 1/2"
£ 1.84
[CI011222W] John Guest White Straight Adaptor 3⁄8″ × 1⁄4″ (NPTF Thread)

John Guest White Straight Adaptor 3⁄8″ × 1⁄4″ (NPTF Thread)

Genuine John Guest Part
White Acetal
Tube OD: 3⁄8″
NPTF Thread: 1⁄4″ 
£ 1.66


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