Description
McAlpine 40mm Waterless Waste Trap – MACVALVE-2-PB
Innovative, Odour-Free Plumbing Solution for Caravans, RVs, and Homes
The McAlpine MACVALVE-2-PB 40mm Waterless Waste Trap is a revolutionary upgrade to traditional water-seal traps — offering a smarter, more reliable, and space-saving way to prevent odours and gases from entering your living space.
Instead of using standing water to create a seal, this waterless trap features an elastomeric membrane that automatically opens under water pressure and closes tightly after flow stops. This prevents foul odours and sewer gases from escaping, even after long periods of disuse.
Compact, versatile, and maintenance-free, the McAlpine Waterless Trap is perfect for caravans, RVs, motorhomes, kitchens, bathrooms, and marine applications — delivering long-term performance in both vertical and horizontal installations.
✅ Key Features & Benefits
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40mm Waterless Waste Trap – Replaces traditional water-sealed traps; no standing water required.
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Elastomeric Membrane Seal – Opens under water pressure and closes automatically to block odours.
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Prevents Odours & Sewer Gases – Keeps air fresh and hygienic in your van, boat, or home.
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Never Dries Out – Works even after long storage or disuse; no evaporation issues.
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Space-Saving Design – Compact size ideal for tight installations under sinks or showers.
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Flexible Installation – Can be installed vertically or horizontally (with a knuckle bend).
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Durable Build – Includes BSP female inlet nut and universal compression outlet for a secure fit.
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Trusted Quality – Manufactured by McAlpine, a world leader in advanced plumbing systems.
⚙️ Specifications
| Specification | Details |
|---|---|
| Brand | McAlpine |
| Model | MACVALVE-2-PB |
| Size | 1½" (40mm) |
| Dimensions (L × W × H) | 200 × 70 × 70 mm |
| Weight | 0.2 kg |
| Installation Orientation | Vertical or horizontal (with knuckle bend) |
| Seal Type | Elastomeric membrane (waterless) |
| Material | High-quality polymer with compression fittings |
| Warranty | 1 Year |
📦 What’s Included
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1 × McAlpine MACVALVE-2-PB 40mm Waterless Waste Trap
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Fitting instructions
🌟 Why Choose the McAlpine MACVALVE-2-PB
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A proven alternative to standard water-seal traps
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Prevents bad odours and backflow gases from drains
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Ideal for caravans, motorhomes, kitchens, and compact plumbing systems
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No water seal = no drying out, no smell, no maintenance
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Backed by McAlpine’s industry-leading reputation for plumbing reliability