Is 40mm the width of the pipe? (not the pipe plus screw fitting)

Mr P, 40mm (1.5") is the diameter of the pipe that this fits, such as is used for baths etc. There is a smaller size which is 32mm (1.25") typically for the pipes used for hand basins. Regards, lim

are these suitanle for outdoor use

yes of course, it is like any other conventional syphons except that it can also be installed horizontally and vertically.Hope this answers your question this time.

Does this work fine with a washing machine without restricting flow, and do they need replacing every x nimber of years or do they work indefinitely?

It'll work fine on a wasing machine as it's wider bore than the outlet hose. Even though guaranteed for 3 years, we've had one for 10+ without problems.

What is the length of this thanks

PM, The length of the Hepvo waste valve as shown in the photograph is 188mm, but be aware that if it is used between two pipes the 'running adaptor' will increase overall length to 208mm. For all the information on Hepvo, try their download site: . There is a useful brochure with lots of pictures, applications and dimensions. Regards, lim

Hepworth Plastics Cv1 Hepv0 40mm Self Seal Waste

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

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฿3600

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Upgrade your plumbing game with the future-proof waterless trap!

FLEXIBLE INSTALLATION - Designed for both vertical and horizontal setups, perfect for any bathroom or kitchen layout.
NEVER DRY ALWAYS SEAL - Innovative silicone membrane replaces traditional water traps to prevent drying out and odors.
UNIVERSAL COMPATIBILITY - Compression end fits solvent weld and pushfit pipes, while the threaded 1 1/2" BSP suits baths, showers, and sinks.
SPACE SAVING IN LINE DESIGN - Ideal for tight or confined plumbing spaces without compromising performance.
MAINTENANCE FREE RELIABILITY - No water needed, no evaporation worries—ensures long-lasting, hassle-free operation.

The Hepworth CV1 HEPV0 40mm Self Seal Waste is a cutting-edge waterless trap using a silicone membrane to create a reliable seal without water. It supports both vertical and horizontal installation, fits multiple pipe types including solvent weld and pushfit, and features a compact in-line design ideal for confined spaces. Lightweight and maintenance-free, it’s perfect for modern baths, showers, and kitchen sinks.

Specifications

ASIN	B009NDZQJK
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	238,443 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,503 in Sealers
Customer Reviews	4.5 4.5 out of 5 stars (86)
Date First Available	8 Oct. 2012
Guaranteed software updates until	unknown
Included Components	Valve
Item Package Quantity	1
Item Weight	110 g
Item model number	CV1 HEPV0 40mm
Manufacturer	Hepworth
Part Number	CV1 HEPV0 40mm
Product Dimensions	6.8 x 6.8 x 18.8 cm; 110 g

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