Top 9 150mm Non Return Valve UK – Valves

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1. Buffalo Flood Systems

Buffalo Retro fit -Non Return Valve to fit 6 inch 150mm Sewerage Pipe. Rodent and Water Stop.

Buffalo Flood Systems - Perfect for foul drainage pipes. Easy retro push fit into PVC or clay pipes. Prevents rodents, vermin and snakes entering your property from the drainage system. Fits: 136mm - 152. 5mm internal diameter of pipe 6 inch /150mm. No tools required. Stainless steel plate in the single flap will stop rats climbing up the drains and into your property. Anti flooding non return valve - STOP BACKFLOW in flooding, preventing sewage entering your property. Fits clay, plastic pvc and concrete pipes to inspection chambers and the end of pipe.
BrandBuffalo Flood Systems
ManufacturerWater and Pest Technologies
Height15 cm (5.91 Inches)
Length16 cm (6.3 Inches)
Width15 cm (5.91 Inches)


Ø 150mm / 6'' Extractor Fan Non Return Valve 150mm / 6inch Ducting Pipe

EUROPLAST - Made in EU. Backdraft Shutter. Simple operation works and silent unlike spring loaded vent valves. International products have separate terms, and language of product, age ratings, are sold from abroad and may differ from local products, including fit, labeling or instructions.

3. Klimapartner

Neverest RKI Backdraft Shutter 150mm Professional HVAC Inline Non Return Valves Galvanized Steel Rubber Sealing

Klimapartner - The rubber seal prevents loud rattling when the flap blades open and close. It has a strong spring and can be installed either horizontally or vertically. This means that no cold air / wind can penetrate the ventilation pipe from the outside. The housing of the flap is made of galvanized steel, the flap blades are made of aluminum, the axle and spring are made of stainless steel.

A tight sealing and fastening of the duct is achieved by the rubber strip attached to the outside of the draft blocker damper. The flap is suitable for retrofitting, since it is completely inside the duct. Installation: the backdraft shutter is installed by pushing it into the ventilation pipe as far as it will go. Functionality: backdraft shutter prevent cold air or wind from entering the ventilation pipe. The backdraft shutter RKI opens and closes automatically.

In this case, the flap is installed in such a way that the flap leaves only open into the outgoing air direction. This also applies to the vertical installation. Designed for re-fitting of bathroom extractor fan, tumble dryer vent and other residential, commercial and industrial 6 inch ducting HVAC applications. Backdraft shutter for insertion into 6 inch ventilation ducts. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally.
Height16 cm (6.3 Inches)
Length15.49 cm (6.1 Inches)
Weight0.15 kg (0.33 Pounds)
Width6.5 cm (2.56 Inches)
Part Number4054503006478

4. Armar Trading LTD

Extractor Fan Non Return Valve Ducting Pipe Backdraft Shutter Wind Shutter ZZ 150mm / 6"

Armar Trading LTD - But at the same time do not adversely affect fan capacity in a significant way. Non-return valves ensure that the air flows in one direction only. Backdraft Shutter. 150mm / 6" non-return Valve for Extractor Fans.
BrandArmar Trading LTD
ManufacturerArmar Trading LTD

5. Buffalo Pest Control

Buffalo Pest Control Water and Rodent Non Return Valve 110mm / 4 inch

Buffalo Pest Control - Drain and sewer non return valve - to stop rats and rodents from climbing up drain pipes, sewers, toilets and into your home. Buffalo's unique design ensures it will fit clay and plastic 110MM / 4" pipes and opens and clears chamber walls on bent inlet chamber pipes.

When fully inserted, the a complete stainless steel face prevents the rats from entering your property and protecting your house plumbing. Easy to install - simple push fit design, just push into the end of a drain pipe or inlet into an inspection chamber. Anti rodent flap valve with stainless steel flap and face prevents rodents from entering the property.

Wrc approveD. Humane way to stop rats in drains and homes, as the Buffalo Rat Blocker allows the rat to leave the property but stops them from coming back. The flap allows rats to leave the property but prevents them from coming back up the sewer or drain pipe. The rubber fins secure the valve in position, no need for any tools.
BrandBuffalo Pest Control
ManufacturerWater and Pest Technologies
Part Number.

6. Jilijia

Jilijia Ducting Pipe Non Return Valve 100MM/150MM Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper, Inline Extractor Fan Vent Back Draught Shutter

Jilijia - Efficient exhaust air flow prevention tool: This air-regulating return air retarder is designed to improve ventilation by releasing polluted air from the automatically closing damper to prevent outdoor air from returning.

The circular duct connector of this leeward damper can be easily installed vertically or horizontally. Two sizes to suit more sizes of exhaust ducts. Abs material air volume adjustment vent connector: The anti-wind air damper is composed of durable materials that do not corrode or rust, and has lightweight damper blades designed to open outwards by air pressure and close under the action of gravity. No pressure setting: this leeward damper prevents wind from returning. Wide range of uses: these dampers can be widely used in air conditioners, range hoods, range hoods, dryers, exhaust fans, heating pipes and vents.
Part NumberJilijia

7. MKK

Rectangular Channel 75mm x 150mm Male Connector with Non Return Valve Coupler with Back Draft Shutter Tube Joint KP75-22

MKK - Material: PVC. Dimension: a-150mm, b-75mm,. Colour: White. 75mmx150mm rectangular Channel Connector with Non Return Valve. Quick and easy fit.
ManufacturerArmar Trading LTD
Part NumberKP75-22


Cotarba 150mm 6" Grey Ducting External Air Vent Cowled Draught Flap Non Return Valve

LOGOK2K - Grey ducting external non-return valve air vent Ø150mm 6" gravity flap 4 free screws and plugs included protection against wind and ingress of Rain Perfect for Kitchen and Bathroom Extractor Fan Can be used As a Part of Long Ductwork Run Stops Draughts Flowing Back Stops odours and noises High quality ABS plastic Passive Ventilation Air Conditioning Whole house ventilation Other sizes available: Ø100mm 4" Ø125mm 5".
Weight0.4 kg (0.88 Pounds)

9. Armar Trading LTD

Ducting Pipe, with Non-Return Valve, Tube Connector 150mm, Wall Plate, 125mm, 150mm, 100mm

Armar Trading LTD - Wall plate with Non-Return Valve. For use with the Round Pipe Ducting systems. The plates are robust, versatile and easy to fit. Quick and easy fit, Lightweight. Wall plate for use with round ducting systems.
BrandArmar Trading LTD
ManufacturerArmar Trading LTD