When should I use an anti-syphon or resealing trap?

Generally, the waste pipe or discharge pipe from an appliance is beyond the limitations of an unvented waste pipe. Usually more critical on the basin and bidet Wastes.

What is the difference between an anti-syphon trap and a re-sealing trap?

A re-sealing is designed to allow air to pass through the water seal under negative pressure but will retain sufficient water. An anti siphon trap has a small mechanical valve which opens under negative pressure.

Why does water not run away in my shower?

If it is not due to the obvious reason of a blockage caused by a buildup of debris, the problem could be due to back pressure within the discharge pipe.

What is the maximum thickness of bath that your bath fillers can be installed on?

The maximum thickness of the bath is 20mm and unfortunately, we do not make an extension ferrule to extend that length.

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McAlpine WHB-1 Wash Hand Basin and Bath Space Saver with Self-Closing Waste Valve.

McAlpine WHB-1 Wash Hand Basin and Bath Space Saver with Self-Closing Waste Valve.

Product ID: 140265341

💧Self-closing valve reduces water waste

📏Compact 58x190x190 mm space-saving design

🛠️Waterless trap with membrane seal blocks odors

HK$393

Duties & taxes included

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Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Save space, save water, and breathe fresh with McAlpine’s smart basin trap!

SPACE MAXIMIZER - Ultra-compact design fits perfectly in small bathrooms and cloakrooms without compromise.
DURABLE HYGIENIC - Robust build ensures long-lasting performance with minimal maintenance.
ODOR FREE FRESHNESS - Innovative waterless trap with membrane seal keeps foul smells and sewer gases out.
ECO SMART WATER SAVER - Self-closing waste valve seals tight to cut water waste and boost efficiency.
FLEXIBLE PLUMBING FIT - Valve allows air intake during negative pressure for versatile installation options.

The McAlpine WHB-1 is a compact wash hand basin space saver featuring an integrated self-closing waste valve that minimizes water waste. Its waterless trap with a membrane seal prevents odors and sewer gases, while the valve design allows air intake during negative pressure for flexible plumbing. Ideal for small bathrooms and cloakrooms, it combines durability with hygienic performance in a sleek, space-efficient form.

Specifications

ASIN	B07N12KLRV
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	196,647 in DIY & Tools ( See Top 100 in DIY & Tools ) 551 in Traps
Colour	White
Customer Reviews	4.5 4.5 out of 5 stars (350)
Date First Available	22 Jan. 2019
Guaranteed software updates until	unknown
Included Components	1 x WHB-1
Item Package Quantity	1
Item Weight	110 g
Item model number	WHB-1
Manufacturer	Mcalpine
Part Number	WHB-1
Product Dimensions	58 x 190 x 190 cm; 110 g
Size	1 & 1/4"

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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HK$393

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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