McAlpine 40mm Waterless Waste Trap – MACVALVE-2-PB

The McAlpine MACVALVE-2-PB 40mm Waterless Waste Trap is the smart alternative to traditional water-seal traps and one of the most innovative advances in modern plumbing.

Unlike conventional traps that rely on standing water, this 40mm waste trap uses an elastomeric membrane that opens under water pressure to allow flow, then closes automatically to form a tight seal. This prevents foul odours and sewer gases from entering your building — without the risk of drying out through evaporation or disuse.

Compact and versatile, it’s a space-saving solution that can be installed both vertically and horizontally (with a knuckle bend). Ideal for bathrooms, kitchens, caravans, RVs, and anywhere a reliable non-return solution is needed.

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✅ Key Features

• 40mm waterless trap with elastomeric membrane – no water seal required

• Odour & gas protection – prevents sewer gas escaping into living spaces

• Space-saving design – fits where traditional traps can’t

• Flexible installation – vertical or horizontal with knuckle bend

• Durable construction – BSP female inlet nut & universal compression outlet

• Never dries out – works even after long periods of non-use

• Brand: McAlpine – trusted global plumbing supplier

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❖ Specifications

• Brand: McAlpine/

• Model: MACVALVE-2-PB

• Size: 1½" (40mm)

• Weight: 0.2 kg

• Dimensions: 200 × 70 × 70 mm

• Warranty: 1 year

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📦 What’s Included

• 1 × McAlpine MACVALVE-2-PB 40mm Waterless Trap

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🌟 Why Choose McAlpine MACVALVE?

• Innovative alternative to traditional water-seal traps

• Prevents odours & backflow gases reliably

• Ideal for compact spaces & modern plumbing installations

• Quality product backed by McAlpine reputation