20mm Shower Non Return Valve with Brass Housing M22 Thread

SUMMARY

This non return valve assembly consists of a brass housing with an integrated hex body and a removable internal check valve. It is designed to allow water to flow in one direction only while preventing reverse flow within shower or plumbing systems. The assembly is commonly installed in mixer valve inlets to prevent cross-flow between hot and cold supplies.

The brass housing incorporates a threaded connection and internal bore that retains the check valve mechanism. The internal non return valve insert sits inside the housing and seals automatically when reverse pressure occurs.

Brass Housing Dimensions

- - Overall housing height: 22mm

- - Thread size: M22 x 1

- - Hex body width across flats: 24mm

- - Hex body outer diameter: 26.5mm

- - Top flange diameter: 18.5mm

- - Upper internal bore diameter: 5.8mm

- - Internal outlet bore: 5mm

- - Lower bore diameter: 10mm

- - Internal thread: M4

- - Internal radius: R1

- - Upper shoulder height: 3.2mm

- - Internal step depth: 8mm

- - Internal bore depth: 19mm

- - Upper body height: 13.5mm

- - Lower stem length: 4.5mm

Non Return Valve Insert Dimensions

- - Overall valve height: 21mm

- - Valve body diameter: 20.5mm

- - Lower valve diameter: 19.8mm

- - Main body height: 17.5mm

Function

- - Allows water to flow in one direction only

- - Prevents backflow within plumbing systems

- - Helps maintain stable operation in mixer valves and shower valves

This type of check valve assembly is typically used in thermostatic or manual mixer valves where non return protection is required within the inlet housing.

FAST DELIVERY

• Delivery of this item is priced as a 'small packet'. UK delivery costs £5.95 incl. VAT.
• For all in-stock spare parts the typical UK delivery timescale is 2-5 working days.
• If you need a part urgently then we can provide a next-day (delivered Mon-Fri) UK delivery service for all in-stock small parcels ordered before 3.00pm, Monday - Friday.
• Next day delivery is available to select at an additional charge during the checkout.
• We delivery WORLDWIDE. For more information about international deliveries, read our delivery page.

RETURNS

• If you need to return a part then please telephone Di Vapor on 0121 705 0866 with the reasons for the return within 14 days of receiving the goods.
• For more information please see our terms and conditions.