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Push-fit
3.0 out of 5 (2 reviews)
Item shipped with tracking which didn’t work. Item took far too long to arrive and was late. Item returned for a refund.— Peter Reid
Dhs. 21.36John Guest Single Check Valve - 5/16" Push Fit
MPN
Dhs. 66.60 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.
Dhs. 21.36Need help choosing the right fitting?
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Learn moreWhat our customers say
The John Guest Single Check Valve with 5/16" push-fit connections is designed to prevent back-flow of treated water into the mains water supply, which is required by UK bylaw.
Designed to connect easily in-line with water filtration systems, the John Guest single check valve is the quick and easy solution to ensuring filtered or treated water does not find it's way back into the mains supply.
Ensures peace of mind and compliance with UK law.
- MPN
- 516SCV
- Brand
- John Guest
- Fitting type
- Check valve
- Push-fit size
- 5/16"
- 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 Single Check Valve with 5/16" push-fit connections is designed to prevent back-flow of treated water into the mains water supply, which is required by UK bylaw.
Designed to connect easily in-line with water filtration systems, the John Guest single check valve is the quick and easy solution to ensuring filtered or treated water does not find it's way back into the mains supply.
Ensures peace of mind and compliance with UK law.
Specifications
- MPN
- 516SCV
- Brand
- John Guest
- Fitting type
- Check valve
- Push-fit size
- 5/16"
- 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.