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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
£4.49MCM Straight Check Valve - 5/16" Push Fit
MPN
£4.99 inc. VAT
In stock
Ready to dispatch
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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.
£4.49Need help choosing the right fitting?
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Learn moreWhat our customers say
MCM Straight 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 MCM Straight Check Valve is the quick and easy solution to ensuring filtered or treated water does not find its way back into the main supply.
Ensures peace of mind and compliance with UK law.
Features
- Stainless steel grab ring for secure connections
- Quality approved by global companies including Samsung & LG
- 100% leak tested in production
- Streamlined body minimises pressure loss
Applications
- Water Filtration
- Drinks Dispense
- Water Dispensers and Coolers
- Hot Water Boilers
- Beverage Vending Machines
- Ice Makers
- Beer Dispensers
Approvals & Certifications
- WRAS Approved
- NSF 58 / ANSI 58 - Tested & approved for contact with drinks and food stuffs.
- NSF 61 / ANSI 61 - Tested & approved for contact with drinking water.
- EU RoHS Directives 2011/65/EC
- MPN
- SCA5151G01
- Brand
- MCM
- Fitting type
- Check valve
- Push-fit size
- 5/16" x 8mm
- Material
- Acetal
Follow the manufacturer’s installation guidance and check all connections before leaving the installation.
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
MCM Straight 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 MCM Straight Check Valve is the quick and easy solution to ensuring filtered or treated water does not find its way back into the main supply.
Ensures peace of mind and compliance with UK law.
Features
- Stainless steel grab ring for secure connections
- Quality approved by global companies including Samsung & LG
- 100% leak tested in production
- Streamlined body minimises pressure loss
Applications
- Water Filtration
- Drinks Dispense
- Water Dispensers and Coolers
- Hot Water Boilers
- Beverage Vending Machines
- Ice Makers
- Beer Dispensers
Approvals & Certifications
- WRAS Approved
- NSF 58 / ANSI 58 - Tested & approved for contact with drinks and food stuffs.
- NSF 61 / ANSI 61 - Tested & approved for contact with drinking water.
- EU RoHS Directives 2011/65/EC
Specifications
- MPN
- SCA5151G01
- Brand
- MCM
- Fitting type
- Check valve
- Push-fit size
- 5/16" x 8mm
- Material
- Acetal
Installation
Follow the manufacturer’s installation guidance and check all connections before leaving the installation.
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.