Check valves for water filters

The 1/4" check valve from John Guest is the reliable solution for water filter systems and reverse osmosis units. With its standard size, it fits perfectly into most common systems and effectively prevents water from flowing back. This ensures that the quality of your filtered water remains protected at all times and extends the lifespan of your system.Made from high-quality materials, this John Guest spare part stands out with its durability and ease of use. Installation is quick and requires no special tools, so you can easily fit the check valve yourself. Especially in water filtration technology, quality and precision matter – and this valve delivers both.Whether for home use or professional applications, the 1/4" check valve supports the reliable operation of your reverse osmosis system. It ensures that water flows only in the intended direction and provides lasting protection for your components.Key Benefits: Standard 1/4" size – perfect for water filter systems and reverse osmosis unitsReliable protection against water backflowPremium John Guest quality for long-lasting performanceEasy installation without special toolsIncreases safety and efficiency of your systemThe product range is not suitable for use in the compressed air and vacuum sector.

The 3/8" check valve from John Guest provides dependable protection against backflow in larger water filter systems and reverse osmosis units. It has been designed for applications that require higher flow rates, ensuring consistent performance and safety even in demanding environments.Thanks to proven John Guest craftsmanship, this check valve is robust and highly durable. Installation is simple and can be completed in just a few steps, adding a vital component to your filtration system for smooth operation.If you’re looking to upgrade your reverse osmosis system or water filtration unit with a reliable John Guest spare part, the 3/8" check valve is an excellent choice. It safeguards your system and ensures a steady supply of high-quality water at all times.Key Benefits:3/8" size for higher flow capacityEffective protection against water backflowRobust construction in trusted John Guest qualityQuick and easy installationExtends the lifespan of your reverse osmosis and filtration systemsThe product range is not suitable for use in the compressed air and vacuum sector.