This McAlpine WHB-1 is a self-closing valve designed for wash hand basins and baths, helping to sa...This McAlpine WHB-1 is a self-closing valve designed for wash hand basins and baths, helping to save space and prevent foul odors. It features a 1 1/4" BSP female inlet and a 1 1/4" universal compression outlet. The internal membrane opens under water pressure for discharge and closes to create a seal, preventing sewer gas entry. It also allows air to be drawn into the waste pipe during negative pressure, eliminating the need for secondary ventilation. The valve is easy to clean by removing the plug and membrane. Overall height is 62mm. It is manufactured in polypropylene and includes a side inlet connection for 19/23mm condensate or condense drain.
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Product Information
Full details
This guide is for users of the McAlpine WHB-1 self-closing valve, designed to improve wash hand basin and bath installations. The key benefit is space-saving and odor prevention, but note that proper installation is crucial for optimal performance. This guide covers key features, usage, troubleshooting, and care instructions to help you get the most out of your McAlpine WHB-1.
All features
Model Part Number
WHB-1
Brand
McAlpine
Extended Product Information
FAQs
What size is the inlet and outlet?
The inlet is 1 1/4" BSP female, and the outlet is 1 1/4" universal compression.
What materials is the valve made of?
The valve is manufactured from polypropylene.
How do I clean the valve?
Remove the plug and membrane, rinse with water, and reassemble.
Does it require any special tools for installation?
Standard plumbing tools are required for installation.
What is the purpose of the side inlet?
The side inlet is for connecting a 19/23mm condensate or condense drain.
How does the valve prevent odors?
The internal membrane opens under water pressure for discharge and closes to create a seal, preventing sewer gas entry.
What are the dimensions of the valve?
The overall height of the valve is 62mm.
Where can I find replacement parts?
Replacement parts are typically available from plumbing supply stores.
Troubleshooting
Foul odors are present.
Check if the valve is correctly installed and sealed. Clean the valve and ensure the membrane is in good condition and sealing properly. Check for any leaks in the waste pipe connections.
Slow draining.
Check for blockages in the valve and the drainpipe. Remove any debris. Ensure the water pressure is sufficient to open the valve fully.
Leakage.
Inspect all connections for leaks. Tighten any loose connections. Ensure washers and seals are in good condition and properly seated.
Pros and Cons
Pros
Prevents the entry of unpleasant sewer gases.
Eliminates the need for a separate air admittance valve in many installations.
Compact design allows for more efficient use of space under the basin or bath.
Easy to clean and maintain, promoting longevity.
Universal compression outlet simplifies installation with various plumbing systems.
Cons
Requires correct installation to ensure proper sealing.
The valve's effectiveness depends on adequate water pressure.
May require periodic cleaning to remove debris and maintain optimal function.
The internal membrane could potentially degrade over time with heavy use.
Not suitable for all waste water applications, check compatibility first.
Setup, Compatibility & Care
Installation: Connect the 1 1/4" BSP female inlet to the basin or bath waste pipe. Connect the 1 1/4" universal compression outlet to the drainpipe.
Compatibility: This valve is designed for wash hand basins and baths. It's compatible with standard plumbing systems. Always ensure all connections are watertight.
Care: Regularly inspect the valve for any blockages or debris. To clean, remove the plug and membrane, rinse with water, and reassemble. Inspect the seal and replace if worn or damaged. Ensure the valve operates freely after cleaning and reassembly.