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Push-fit
4.9 out of 5 (500+ store reviews)
Perfect fit for my RO system. The size was exactly what I needed, delivery was fast and installation was as easy as push and go.— Mark T., verified buyer store review
John Guest 15mm to 3/8" Push Fit Installation Kit
MPN
£29.99 inc. VAT
In stock
Ready to dispatch
- WRAS approved
-
Push-fit
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FREE Express Delivery
UK orders over £60
Next Day Delivery
£6.99
Standard Delivery
£3.99 for 2-3 days
*Applies when Next Day Delivery is selected at checkout.
Delivery information
Order before the delivery cut-off for the fastest available dispatch. Delivery options and final prices are confirmed at checkout.
Need help choosing the right fitting?
Our size guide and fitting advice help you choose the right connection first time.
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Learn moreWhat our customers say
The 15mm to 3/8" Push Fit John Guest Installation Kit is the ideal solution for installing an under-sink or fridge filter where have an open ended 15mm copper pipe or you are starting from scratch.
With the highest quality John Guest fittings, this installation kit provides everything you need when installing an external filter.
Kit contains:
1 x 15mm Push Fit to 3/8" Push Fit Connector
1 x 5 metre 3/8" Tubing (can be cut to suit)
1 x 3/8" Shut-Off Valve
1 x 3/8" Straight Connector
PLEASE NOTE: This installation kit will require an open ended 15mm copper pipe for installation. If not, please see our other installation kits or consult a plumber.
- MPN
- JG15M38PFIK
- Brand
- John Guest
- Fitting type
- Installation kit
- Push-fit size
- 15mm x 3/8"
- Material
- Acetal/LLDPE/EPDM
Official John Guest video
How to make a John Guest standard fitting connection
This short installation video shows the standard push-fit connection process for drinks dispense and water treatment fittings.Order before our dispatch cut-off — 3pm Monday to Friday, or 12pm on Saturday — and your order is sent the same day; anything after that follows the next working day. We don’t dispatch on Sundays, and you’ll get a tracking link by email as soon as your order is on its way.
Choose your UK delivery option at checkout:
- Free Express Delivery — free on orders over £60 (2–3 working days).
- Standard Delivery — £3.99 (2–3 working days).
- Next Day Delivery — £6.99, arriving the next working day when you order before the cut-off.
We also ship internationally, with rates calculated at checkout.
Returns & refunds
Changed your mind? You have 30 days to return any unused filter in its original sealed packaging for a refund, or 90 days for exchanges. Start at our returns portal and either generate a prepaid Royal Mail label (£3.49, deducted from your refund) or use your own courier — exchanges are always free to return. We approve refunds within 24 hours of your return reaching us; your bank may then take 3–5 working days to show the funds.
Product Details
The 15mm to 3/8" Push Fit John Guest Installation Kit is the ideal solution for installing an under-sink or fridge filter where have an open ended 15mm copper pipe or you are starting from scratch.
With the highest quality John Guest fittings, this installation kit provides everything you need when installing an external filter.
Kit contains:
1 x 15mm Push Fit to 3/8" Push Fit Connector
1 x 5 metre 3/8" Tubing (can be cut to suit)
1 x 3/8" Shut-Off Valve
1 x 3/8" Straight Connector
PLEASE NOTE: This installation kit will require an open ended 15mm copper pipe for installation. If not, please see our other installation kits or consult a plumber.
Specifications
- MPN
- JG15M38PFIK
- Brand
- John Guest
- Fitting type
- Installation kit
- Push-fit size
- 15mm x 3/8"
- Material
- Acetal/LLDPE/EPDM
Installation
Official John Guest video
How to make a John Guest standard fitting connection
This short installation video shows the standard push-fit connection process for drinks dispense and water treatment fittings.Delivery & Returns
Order before our dispatch cut-off — 3pm Monday to Friday, or 12pm on Saturday — and your order is sent the same day; anything after that follows the next working day. We don’t dispatch on Sundays, and you’ll get a tracking link by email as soon as your order is on its way.
Choose your UK delivery option at checkout:
- Free Express Delivery — free on orders over £60 (2–3 working days).
- Standard Delivery — £3.99 (2–3 working days).
- Next Day Delivery — £6.99, arriving the next working day when you order before the cut-off.
We also ship internationally, with rates calculated at checkout.
Returns & refunds
Changed your mind? You have 30 days to return any unused filter in its original sealed packaging for a refund, or 90 days for exchanges. Start at our returns portal and either generate a prepaid Royal Mail label (£3.49, deducted from your refund) or use your own courier — exchanges are always free to return. We approve refunds within 24 hours of your return reaching us; your bank may then take 3–5 working days to show the funds.