AC Condensate Drain Check Valve – One-Way Non-Return | LEENKEA

LEENKEA AC Condensate Drain Check Valve – One-Way Non-Return Flow

Keep your air conditioning drainage system running smoothly with the LEENKEA Condensate Drain Pipe Check Valve. Engineered for central, wall-mounted, and cabinet AC units, this one-way non-return valve ensures condensate flows in a single direction — eliminating backflow and keeping unwanted odours out of your living or working space.

Made in Mainland China.

Key Features

• Versatile Compatibility: Suitable for central air conditioners, wall-mounted units, cabinet units, ceiling units, and duct units — one solution for virtually any AC drainage setup.
• Odour Prevention: Effectively blocks backflow of sewer gases and stale air, maintaining a clean, fresh environment indoors.
• Durable PC Construction: Crafted from environmentally friendly polycarbonate (PC) material offering high strength, weather resistance, and long-term dimensional stability — no warping or deformation over time.
• Slow-Closing Design: The slow-closing mechanism allows smooth single-direction flow while completely preventing backflow, optimising drainage efficiency.
• High Pressure Rating: Rated at 1.23 MPa nominal pressure for dependable, reliable performance across a wide range of installation conditions.
• Transparent Body: Clear construction lets you visually inspect flow and valve condition without disassembly.

Specifications

Package Contents

• 1 × Condensate Drain Check Valve (size/type as selected)

Compatibility Guide

• Type A (78 mm): Wall-mounted and cabinet air conditioning units
• Type B (92 mm): Central air conditioners, ceiling units, and duct units
• Type C (134 × 75 mm, blue): Central air conditioners, ceiling units, and duct units

Important Notes

• Product colour may vary slightly from images due to monitor brightness and lighting conditions.
• Please allow ±1–2 mm manual measurement tolerance.

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For guidance on safe HVAC drainage practices, refer to the U.S. EPA Indoor Air Quality resource.

Frequently Asked Questions

Q: What types of air conditioning systems is this condensate drain check valve compatible with?

A: The LEENKEA condensate drain check valve is compatible with central air conditioners, wall-mounted mini-split units, cabinet units, ceiling-mounted units, and duct systems. Choose Type A (78 mm) for wall-mounted/cabinet units, or Type B (92 mm) / Type C (134×75 mm) for central, ceiling, and duct units.

Q: How does a one-way check valve prevent odours in my AC drain line?

A: A one-way (non-return) check valve allows condensate water to flow out through the drain pipe in a single direction only. When there is no active flow, the valve closes, forming a seal that blocks sewer gases and stale air from travelling back up through the drain pipe and into your room.

Q: Is the valve easy to install without professional help?

A: Yes. The LEENKEA check valve is designed for straightforward installation. Simply select the correct size for your unit (A, B, or C), insert the valve in-line with your existing condensate drain hose, and ensure directional flow arrows point away from the AC unit. No special tools are required for most standard installations.

Q: What material is the valve made from, and is it durable?

A: The valve is made from high-grade polycarbonate (PC), an environmentally friendly thermoplastic known for its high impact strength, weather resistance, and dimensional stability. It is engineered to withstand a nominal pressure of 1.23 MPa without deforming, making it suitable for long-term use.