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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 3 Way ASV Valve - 15mm x 15mm x 3/8" Push Fit
MPN
£21.99 inc. VAT
In stock
Ready to dispatch
- WRAS approved
-
Push-fit
Calculating delivery...
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.
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Our size guide and fitting advice help you choose the right connection first time.
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Learn moreWhat our customers say
The John Guest 3 Way ASV Valve with 15mm PF x 15mm PF x 3/8" Push Fit connections is the perfect solution for creating a water feed for water filtration systems, water softeners, water coolers, vending machines and more.
Features
- Truly demountable without damage to pipe or fitting
- Grip and seal connection
- Reduced installation time (by up to 40%)
- Lead free and non-toxic
- Corrosion free with no scale build
The updated John Guest ASV Valve features a single piece, plastic ball handle. Previous versions of this valve included a ball arrangement with a chrome-plated screw, washer and handle.
This new and improved version has been designed to ensure there is no corrosion or limescale build-up that previously led to the ball valve being difficult to close and open and the handle becoming inoperable
- MPN
- JGASV4
- Brand
- John Guest
- Fitting type
- Angle stop, Reducer, Shut off
- Push-fit size
- 15mm x 3/8"
- Material
- Polypropylene
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 John Guest 3 Way ASV Valve with 15mm PF x 15mm PF x 3/8" Push Fit connections is the perfect solution for creating a water feed for water filtration systems, water softeners, water coolers, vending machines and more.
Features
- Truly demountable without damage to pipe or fitting
- Grip and seal connection
- Reduced installation time (by up to 40%)
- Lead free and non-toxic
- Corrosion free with no scale build
The updated John Guest ASV Valve features a single piece, plastic ball handle. Previous versions of this valve included a ball arrangement with a chrome-plated screw, washer and handle.
This new and improved version has been designed to ensure there is no corrosion or limescale build-up that previously led to the ball valve being difficult to close and open and the handle becoming inoperable
Specifications
- MPN
- JGASV4
- Brand
- John Guest
- Fitting type
- Angle stop, Reducer, Shut off
- Push-fit size
- 15mm x 3/8"
- Material
- Polypropylene
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.