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Double Check Valve DZR 22mm (26003)

£ 8.39INC VAT

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Double Check Valve DZR 22mm (26003)

Brass, steel and plastic construction. Suitable for water.

  • Brass, Steel & Plastic

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View all: Unbranded Check Valves

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Double Check Valve DZR 22mm is rated 5.0 out of 5 by 1.
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Rated 5 out of 5 by from Check this out Certainly not the cheapest Double Check Valve on the market but I've seen them at twice the price as well. Only problem I've encountered is that in store availability is sometimes limited - not a problem if you can wait 24hours
Date published: 2016-10-11
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Is this suitable for gas/air pressure?

Asked by: simpjd

What is the minimum pressure to open to valve?

Asked by: Tobyorgan1

Will the valve work vertically flow direction down?

Asked by: JayAsh
Hello, Thank you for your enquiry. Screwfix cannot offer installation advice but please note that this valve is not bi-directional. Hope that helps. Thank you for using Q&A. MH
Answered by: Screwfix778
Date published: 2020-02-06

Are there any seals in the valve, if so what material, NBR, EPDM??

Asked by: Stuartyboy
Hello, Thank you for your enquiry. There are O rings which are EPDM. Hope that helps. Thank you for using Q&A. MH
Answered by: Screwfix778
Date published: 2020-01-17

What is the difference between a single and a double check valve?

and what is the slotted bit half way for?
Asked by: RustyBilgeWater
Hello, A check valve prevents water back flow, a single check valve has one valve. However by the time the valve closes small amounts of water may pass through (could potentially contaminate water supply). A double check valve has two valves, the 2nd valve prevents any water that escapes from the first valve from passing through and contaminating the water supply. There are regulations stating when double check valves must be used. The slotted part on the valve is where you close/open the valve by turning it. Thank you for using Q&A.
Answered by: DGIFF
Date published: 2020-06-27
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Specification
Construction Material (Plumbing) Brass, Steel & Plastic
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Pieces in Pack/Case 1
Product Diameter 22 mm
Product Type Double Check Valve DZR