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{"id":773065048151,"title":"In line Back Flow Prevention Non Return Valve 110mm, 160mm, 200mm","handle":"back-flow-prevention-non-return-valve-110mm-160mm-200mm","description":"Please note there are two versions of this valve, this is the outlet flap valve suitable for placing onto the end of plain ended pipe.  The\u003ca href=\"https:\/\/www.freeflush.co.uk\/products\/flap-valve-anti-flood-non-return-valve\"\u003e Inline flap valve version\u003c\/a\u003e can be found \u003ca href=\"https:\/\/www.freeflush.co.uk\/products\/flap-valve-anti-flood-non-return-valve\"\u003ehere\u003c\/a\u003e. \u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eInline Enclosed Back Flow Prevention Non Return Valve \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBackflow Prevention Valves (non-return valves) effectively secure any rooms located on the lower floors against flooding caused by back flow of storm water and sewage. Back flow may be caused by intense rain, thaw or floods. BS8515 recommends the use of backflow prevention valves for underground rainwater systems to prevent sewage entering the rainwater tank. Likewise if a storm attenuation system discharges to a foul sewer a backflow prevention valve can be fitted on the outlet. \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe flap’s protecting guard as well as all mounting elements (screws, nuts and washers) are made of chromium-nickel stainless steel type 0H 18N9.\u003c\/p\u003e\n\u003cp\u003eThe shape of the protecting guard and gasket has been designed to protect against damage of the gasket by rodents and sliding during sewage flow.\u003c\/p\u003e\n\u003cp\u003eBackflow Prevention Valves are equipped with a manual closure lever. 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","id":722844352599,"position":12,"preview_image":{"aspect_ratio":0.953,"height":656,"width":625,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0829\/4323\/products\/KARZB200-dimensions.jpg?v=1569053013"},"aspect_ratio":0.953,"height":656,"media_type":"image","src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0829\/4323\/products\/KARZB200-dimensions.jpg?v=1569053013","width":625}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"Please note there are two versions of this valve, this is the outlet flap valve suitable for placing onto the end of plain ended pipe.  The\u003ca href=\"https:\/\/www.freeflush.co.uk\/products\/flap-valve-anti-flood-non-return-valve\"\u003e Inline flap valve version\u003c\/a\u003e can be found \u003ca href=\"https:\/\/www.freeflush.co.uk\/products\/flap-valve-anti-flood-non-return-valve\"\u003ehere\u003c\/a\u003e. \u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eInline Enclosed Back Flow Prevention Non Return Valve \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBackflow Prevention Valves (non-return valves) effectively secure any rooms located on the lower floors against flooding caused by back flow of storm water and sewage. Back flow may be caused by intense rain, thaw or floods. BS8515 recommends the use of backflow prevention valves for underground rainwater systems to prevent sewage entering the rainwater tank. Likewise if a storm attenuation system discharges to a foul sewer a backflow prevention valve can be fitted on the outlet. \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe flap’s protecting guard as well as all mounting elements (screws, nuts and washers) are made of chromium-nickel stainless steel type 0H 18N9.\u003c\/p\u003e\n\u003cp\u003eThe shape of the protecting guard and gasket has been designed to protect against damage of the gasket by rodents and sliding during sewage flow.\u003c\/p\u003e\n\u003cp\u003eBackflow Prevention Valves are equipped with a manual closure lever. It enables protection against unpleasant smells in case of longer breaks in household sanitary system use.\u003c\/p\u003e\n\u003c\/div\u003e"}

In line Back Flow Prevention Non Return Valve 110mm, 160mm, 200mm

£49.99
Maximum quantity available reached.
Please note there are two versions of this valve, this is the outlet flap valve suitable for placing onto the end of plain ended pipe.  The Inline flap valve version can be found here

Inline Enclosed Back Flow Prevention Non Return Valve 

Backflow Prevention Valves (non-return valves) effectively secure any rooms located on the lower floors against flooding caused by back flow of storm water and sewage. Back flow may be caused by intense rain, thaw or floods. BS8515 recommends the use of backflow prevention valves for underground rainwater systems to prevent sewage entering the rainwater tank. Likewise if a storm attenuation system discharges to a foul sewer a backflow prevention valve can be fitted on the outlet. 

The flap’s protecting guard as well as all mounting elements (screws, nuts and washers) are made of chromium-nickel stainless steel type 0H 18N9.

The shape of the protecting guard and gasket has been designed to protect against damage of the gasket by rodents and sliding during sewage flow.

Backflow Prevention Valves are equipped with a manual closure lever. It enables protection against unpleasant smells in case of longer breaks in household sanitary system use.

There is no additional documentation for this product

We are fully operational and continue to dispatch. 

*Dispatch to the EU AND NI will be temporarily suspended until further notice - please accept our apologies.*

*Delays, in some cases significant delays, are being experienced on some EU stock items. Please call in advance for stock items*

*Stock inventory is changing, EU inventory will no longer form Stock Inventory, previously available next day*

With the current situation, delays with delivery are expected due to lockdowns, reduced staffing and inundation of couriers from increased online ordering generally. 

  • Small items dispatched daily with RM24 ~85% arriving next day
  • Large items (UK made) 5 - 15 working days (Parcelforce/Tuffnels etc.) 

The following items have a 4 week lead time: 

  • 1275l wall tank 
  • 525l rainwater tank
  • 800l wall tank 
    The following items (EU) are purchased on a pre order basis with a potential 6-12 week lead time:
    • Alana - Blue Grey Granite
    • Burgudy rainwater barrel
    • Evergreen
    • Filter Collector White
    • Filter Collector Universal White
    • Granite Wall Tank with White Filter Collector
    • Maurano - Charcoal 
    • Novara - Slate grey
    • Rainbowl - Slate
    • Rainbowl Flower - Blue Grey Granite 
    • Wall Tank with White Filter Collector - SANDSTONE
    • Wall Tank with White Filter Collector - BLACK
    • Heavy Duty Water butt stand 
    The following items (EU) are purchased on a pre order basis with a potential 6 months lead time:
    800l Wall Tank - Green 
    • 800l Green Wall Tank - All Filters 
    • Green Rain Tank System - All sizes

    Covid delivery updates between 12.3.20 and 11.1.21 21 have been archived here.

    12.3.20 * Due to the Coronovirus Pandemic a number of our suppliers and couriers have provided indications of potential delay of goods and deliveries. Many of the goods we supply are manufactured in the EU where action is being taken to slow the spread of the virus. This may have an impact on your order. Please get in touch to see if a certain product/order is affected. As it stands this should have no impact on UK stock and deliveries.*

    ===========================================================

    We're a Manchester based company and ship to the UK at our standard rates. Please get in touch if you are based in the Highlands, UK island or Northern Ireland, surcharges may apply. 

    We also ship all small items (<2kg) to the EU at standard rates which can be seen at checkout. For larger items or quotes for other destinations please get in touch.

    We ship all small items (<2kg) Worldwide.  

    Our design and Prestige range is available in the Netherlands, Ireland, Belgium, France, Germany, direct or through our distributors.

    Stock items will be dispatched on the day of order, if ordered before 1pm.

    Letters are sent 1st class. 

    Parcels <2kg are shipped with Royal Mail 24 Tracked with the following target delivery times.

    A loss/replacement can only be pursued in line with the target delivery times of the courier or once the courier accept loss. 

    Bulky items (and pallet deliveries) are dispatched within 2-5 working days. We will request a contact number if this has not been provided at checkout. 

    Some items are made to order (bespoke) and details are given on the listing for dispatch times.  If for any reason we anticipate a delay on our normal dispatch time we will contact you to let you know.

    Occasionally there are delays. We shall not be liable for any direct or indirect losses, costs, damages or expenses incurred by you or any other person for any delays in delivery.

    Missed deliveries where attempted delivery has been made usually result in re-deliveries the following day. The customer is responsible for organising re deliveries by contacting the courier direct. 

    We are an environment centric business and as such we try to minimise our waste. Our packaging is usually recycled and/or recyclable and we make efficient use of packaging to minimise wastage.