can this be fitted below sink waste level want to get rid of soil stack in bathroom to give cleaner lines, rather than boxing in and tiling round

I bought mine for external use so I would not have to put the stack pipe up beside & above my new roof dormer, and like the another person, who responded to this question, I can see no reason why it could not be fitted below sink waist level, but It would be best to make sure it's OK if the planed position was going to be below the toilet waste outlet (if that's possible)

Hi will it fit osma pipe or floplast only

Will fit any 110mm soil pipe as they all should be 110mm

Can these valves be installed horizontally or do they have to be vertical?

AX110 valves must be installed vertically

is item up to current building regs

Hi, UK Building Regulations (document H1, section 1.33) states 'Air admittance valves should not be used outside buildings or in dust laden atmospheres', so you will not be complying with the Building Reg's if you fit this as per the manufacturer's recommendations. The reason for the above statement is that debris, and insects or spiders can gain ingress and force open the vent seal, preventing it from functioning, and there is no current testing method for this type of ingress The only acceptable way, according to the Building Regulations, for an air admittance valve to be installed outside a building if it is is housed within an enclosure, preventing said ingress.

Floplast External Air Admittance Valve Black

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 76.69

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Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Elevate your airflow game with FloPlast’s sleek, certified valve!

CERTIFIED RELIABILITY - A1 approved & kite marked for ultimate safety and compliance
EFFORTLESS INTEGRATION - Compact, lightweight design fits seamlessly into modern plumbing setups
ALL WEATHER PERFORMANCE - Engineered to function flawlessly from freezing cold to scorching heat
CLEAN AIRFLOW GUARANTEE - Mesh filter prevents debris and insects, keeping your system pristine
FLOOD LEVEL INSTALLATION - Safe to install below flood level—peace of mind in any environment

The FloPlast External Air Admittance Valve in black is a robust PVC valve designed to allow air into sanitary pipework while blocking foul gases. Certified to BS EN 12380 with A1 approval and kite marking, it operates reliably in extreme temperatures (-20°C to +60°C) without insulation. Its built-in mesh prevents debris and insects, and it can be safely installed below flood levels, making it a trusted choice for professional plumbing systems.

Specifications

ASIN	5666039695
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	155,469 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,126 in Central Heating System Accessories 6,519 in Pumps & Plumbing Equipment
Colour	Black
Customer Reviews	4.6 4.6 out of 5 stars (214)
Date First Available	21 April 2021
Guaranteed software updates until	unknown
Included Components	1 x Air Admittance Valve
Item Package Quantity	1
Item Weight	442 g
Item model number	AX110BL
Manufacturer	FloPlast
Material	PVC
Measurement System	Metric
Number of Pieces	1
Part Number	AX110BL
Product Dimensions	14.79 x 14.79 x 12.1 cm; 442 g

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