
Self Closing Waste Valve 1 1/2″ Universal
The Abey Self-Closing Waste Valve (1 ½" Universal) is the ultimate problem-solver for modern plumbing.
Also known as the MacValve-5, this innovative inline trap allows you to ditch the bulky U-bend entirely. Designed with a unique self-closing membrane, it opens to let water flow freely and snaps shut instantly to create an airtight seal. This means it works without a water seal, making it immune to evaporation, siphoning, and the "gurgling" sounds that plague traditional drains.
Unlike standard traps that must screw directly onto a waste outlet, this Universal model features compression fittings on both ends. This allows you to install it inline anywhere in your pipework—vertically or horizontally—making it a lifesaver for tricky retrofits, tight vanity cabinets, and complex pipe runs.
Key Features:
-
Inline "Anywhere" Installation: With 1 ½" Universal Compression fittings on both the inlet and outlet, this valve can be cut into existing pipework effortlessly.
-
Vertical or Horizontal: Works perfectly in any orientation, giving you complete freedom in your plumbing design.
-
Waterless & Odour-Free: The self-sealing membrane blocks sewer gases, pests, and backflow without relying on water. It will never dry out, making it ideal for guest bathrooms, holiday homes, or RVs.
-
Whisper Quiet: Neutralizes negative pressure to eliminate noisy drain gurgles.
-
Space Saving: The compact, straight-through design removes the need for a low-hanging P-trap, freeing up valuable storage space under your sink.
-
Easy Maintenance: Top-access design allows you to remove and clean the internal membrane without dismantling the pipe.
Technical Specifications:
-
Brand: Abey (Fantastic Plastic / McAlpine Range)
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Model Code: MACVALVE-5
-
Size: 40mm / 1 ½"
-
Connections: 1 ½" Universal Compression (Inlet & Outlet)
-
Material: White Polypropylene
-
Installation: Vertical or Horizontal
Why choose the MACVALVE-5? This is the "Swiss Army Knife" of traps. While standard traps require a specific connection to the sink waste, the MACVALVE-5 connects pipe-to-pipe. This makes it perfect for joining two pipes in a tight cupboard, managing condensate lines, or acting as a non-return valve to prevent backflow in older properties.
Original: $36.21
-65%$36.21
$12.67Self Closing Waste Valve 1 1/2″ Universal
The Abey Self-Closing Waste Valve (1 ½" Universal) is the ultimate problem-solver for modern plumbing.
Also known as the MacValve-5, this innovative inline trap allows you to ditch the bulky U-bend entirely. Designed with a unique self-closing membrane, it opens to let water flow freely and snaps shut instantly to create an airtight seal. This means it works without a water seal, making it immune to evaporation, siphoning, and the "gurgling" sounds that plague traditional drains.
Unlike standard traps that must screw directly onto a waste outlet, this Universal model features compression fittings on both ends. This allows you to install it inline anywhere in your pipework—vertically or horizontally—making it a lifesaver for tricky retrofits, tight vanity cabinets, and complex pipe runs.
Key Features:
-
Inline "Anywhere" Installation: With 1 ½" Universal Compression fittings on both the inlet and outlet, this valve can be cut into existing pipework effortlessly.
-
Vertical or Horizontal: Works perfectly in any orientation, giving you complete freedom in your plumbing design.
-
Waterless & Odour-Free: The self-sealing membrane blocks sewer gases, pests, and backflow without relying on water. It will never dry out, making it ideal for guest bathrooms, holiday homes, or RVs.
-
Whisper Quiet: Neutralizes negative pressure to eliminate noisy drain gurgles.
-
Space Saving: The compact, straight-through design removes the need for a low-hanging P-trap, freeing up valuable storage space under your sink.
-
Easy Maintenance: Top-access design allows you to remove and clean the internal membrane without dismantling the pipe.
Technical Specifications:
-
Brand: Abey (Fantastic Plastic / McAlpine Range)
-
Model Code: MACVALVE-5
-
Size: 40mm / 1 ½"
-
Connections: 1 ½" Universal Compression (Inlet & Outlet)
-
Material: White Polypropylene
-
Installation: Vertical or Horizontal
Why choose the MACVALVE-5? This is the "Swiss Army Knife" of traps. While standard traps require a specific connection to the sink waste, the MACVALVE-5 connects pipe-to-pipe. This makes it perfect for joining two pipes in a tight cupboard, managing condensate lines, or acting as a non-return valve to prevent backflow in older properties.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Abey Self-Closing Waste Valve (1 ½" Universal) is the ultimate problem-solver for modern plumbing.
Also known as the MacValve-5, this innovative inline trap allows you to ditch the bulky U-bend entirely. Designed with a unique self-closing membrane, it opens to let water flow freely and snaps shut instantly to create an airtight seal. This means it works without a water seal, making it immune to evaporation, siphoning, and the "gurgling" sounds that plague traditional drains.
Unlike standard traps that must screw directly onto a waste outlet, this Universal model features compression fittings on both ends. This allows you to install it inline anywhere in your pipework—vertically or horizontally—making it a lifesaver for tricky retrofits, tight vanity cabinets, and complex pipe runs.
Key Features:
-
Inline "Anywhere" Installation: With 1 ½" Universal Compression fittings on both the inlet and outlet, this valve can be cut into existing pipework effortlessly.
-
Vertical or Horizontal: Works perfectly in any orientation, giving you complete freedom in your plumbing design.
-
Waterless & Odour-Free: The self-sealing membrane blocks sewer gases, pests, and backflow without relying on water. It will never dry out, making it ideal for guest bathrooms, holiday homes, or RVs.
-
Whisper Quiet: Neutralizes negative pressure to eliminate noisy drain gurgles.
-
Space Saving: The compact, straight-through design removes the need for a low-hanging P-trap, freeing up valuable storage space under your sink.
-
Easy Maintenance: Top-access design allows you to remove and clean the internal membrane without dismantling the pipe.
Technical Specifications:
-
Brand: Abey (Fantastic Plastic / McAlpine Range)
-
Model Code: MACVALVE-5
-
Size: 40mm / 1 ½"
-
Connections: 1 ½" Universal Compression (Inlet & Outlet)
-
Material: White Polypropylene
-
Installation: Vertical or Horizontal
Why choose the MACVALVE-5? This is the "Swiss Army Knife" of traps. While standard traps require a specific connection to the sink waste, the MACVALVE-5 connects pipe-to-pipe. This makes it perfect for joining two pipes in a tight cupboard, managing condensate lines, or acting as a non-return valve to prevent backflow in older properties.











