{"product_id":"ac-condensate-drain-pipe-check-valve-one-way-non-return","title":"AC Condensate Drain Check Valve – One-Way Non-Return | LEENKEA","description":"\n\u003ch2\u003eLEENKEA AC Condensate Drain Pipe Check Valve\u003c\/h2\u003e\n\u003cp\u003eKeep your air conditioning drainage system running cleanly and efficiently with this one-way check valve from LEENKEA. Designed for central, wall-mounted, ceiling cassette, duct, and cabinet AC units, this transparent PC check valve prevents backflow and stops unwanted odours from travelling back through your condensate drain line — keeping your home or office smelling fresh year-round.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Three size options (Type A, B, and C) ensure a fit for wall-mounted\/cabinet units as well as central, ceiling cassette, and duct-type air conditioners.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOdour Blocking:\u003c\/strong\u003e The one-way valve mechanism effectively seals off backflow paths, preventing sewer or drain odours from entering your living or working space.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable PC Construction:\u003c\/strong\u003e Manufactured from high-strength, environmentally friendly polycarbonate (PC) material that resists weathering and deformation for long-lasting reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlow-Closing Design:\u003c\/strong\u003e Engineered as a slow-closing check valve allowing single-direction condensate flow while completely eliminating the risk of backflow — no drips, no mess.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Pressure Rated:\u003c\/strong\u003e Rated to a nominal pressure of 1.23 MPa, this valve is built to handle demanding HVAC drainage installations with confidence.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparent Body:\u003c\/strong\u003e The clear design lets you quickly inspect flow and confirm proper operation without removing the valve.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLEENKEA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC (Polycarbonate)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.23 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType A Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e78 mm — suitable for wall-mounted \u0026amp; cabinet AC units\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType B Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e92 mm — suitable for central \/ ceiling cassette \/ duct AC units\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType C Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e134 × 75 mm (blue) — suitable for central \/ ceiling cassette \/ duct AC units\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Condensate Drain Pipe Check Valve (type selected at purchase)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, verify your drain pipe diameter to select the correct type (A, B, or C). Slight colour variation from product images may occur due to monitor settings. Allow ±2 mm manual measurement tolerance for listed dimensions.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-inch-threaded-brass-ball-valve-water-gas-oil-flow-control\"\u003e1-Inch Threaded Brass Ball Valve – Water, Gas \u0026amp; Oil Flow Control\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-1-4-inch-adjustable-washbasin-siphon-trap-leak-proof-silicone-seal\"\u003e1-1\/4\" Adjustable Washbasin Siphon Trap | Leak-Proof Silicone\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAuthoritative Resource\u003c\/h3\u003e\n\u003cp\u003eFor guidance on indoor air quality and HVAC maintenance best practices, visit the \u003ca href=\"https:\/\/www.epa.gov\/indoor-air-quality-iaq\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Environmental Protection Agency – Indoor Air Quality\u003c\/a\u003e resource centre.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of air conditioning systems is this condensate drain check valve compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This one-way check valve is compatible with a wide range of AC systems. Type A (78 mm) fits wall-mounted and cabinet air conditioners. Types B (92 mm) and C (134 × 75 mm) are designed for central air conditioners, ceiling cassette units, and duct-type systems. Always measure your drain pipe diameter before selecting a type.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the check valve prevent odours from entering the room?\u003c\/h4\u003e\n\u003cp\u003eA: The valve operates as a one-way (non-return) gate: condensate water flows freely outward through the drain, but the slow-closing mechanism seals shut to block any reverse airflow or backflow — stopping sewer gases and drain odours from travelling back through the pipe into your living space.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the PC material safe and durable enough for long-term outdoor or indoor use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The valve is made from environmentally friendly polycarbonate (PC), a high-strength engineering plastic with excellent weather resistance. It will not deform under normal HVAC operating conditions and is rated to a nominal pressure of 1.23 MPa, making it suitable for sustained, reliable use in both indoor and outdoor condensate drain lines.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need any special tools to install this check valve?\u003c\/h4\u003e\n\u003cp\u003eA: Installation is straightforward. The valve simply connects inline with your existing condensate drain pipe. No special tools are typically required — just ensure the pipe diameter matches your chosen valve type and insert it in the correct flow direction as indicated on the valve body.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What types of air conditioning systems is this condensate drain check valve compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This one-way check valve is compatible with a wide range of AC systems. Type A (78 mm) fits wall-mounted and cabinet air conditioners. Types B (92 mm) and C (134 × 75 mm) are designed for central air conditioners, ceiling cassette units, and duct-type systems. 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