10 Best Check Valves For Sump Pumps 2025 in the United States

The PumpSpy Silent Check Valve (Model CV-150) is designed to enhance the functionality and life expectancy of sump pumps. Made from durable ABS material, it features a clear valve body which allows for easy monitoring of water flow and ensures no clogs or pump failures. The 1-1/2 inch size with stainless steel clamps and Buna-N rubber couplings make installation straightforward on a Schedule 40 pipe, fitting within a 5-1/8 inch gap.

A standout feature is its spring-loaded flapper which minimizes annoying water hammer noise, providing quiet operation. This makes it a good fit for homes where noise reduction is important. Additionally, it prevents backflow, keeping pumped water from returning to the sump basin, which can increase the pump’s lifespan by reducing unnecessary work.

The PumpSpy Silent Check Valve is ideal for those looking to maintain a quiet environment while ensuring their sump pump operates efficiently and lasts longer.

The Zoeller 30-0181 PVC Plastic Check Valve is a reliable option for those needing a check valve for their sump pump system. Made of durable plastic and metal, this valve can handle both vertical and horizontal installations, providing flexibility during setup. The 1-1/2 inch size and slip x slip unions make it compatible with many standard sump pump systems.

Its design, which reduces water hammer by using a flapper that bends over a radius, helps minimize noise during operation, making it a quieter choice compared to some other valves on the market. The valve's capacity to operate at 4.3 PSI (10 feet of head) and withstand temperatures up to 130°F ensures it can handle various conditions effectively.

However, it's important to note that this valve is made from chlorinated polyvinyl chloride (CPVC), which may not be as durable as other materials like stainless steel in more demanding environments. Potential buyers should consider their specific needs and whether this valve's material and specifications align with their system's requirements. Additionally, its larger dimensions (9.75 x 17.5 x 6.75 inches) might require adequate space for installation. This Zoeller check valve is a good option for those looking for a reliable and quiet valve that can be easily installed in various orientations.

The SUPERIOR PUMP 99507/SC125B American Granby Check Valve is designed for sump pumps and measures 1-1/4 inches. It is made of durable thermoplastic, which ensures longevity and resistance to corrosion. The valve supports connections with MPT x Barb or Slip, making it versatile for different setups.

Its compact dimensions (5.25 x 3 x 8.87 inches) and lightweight (0.01 ounces) ensure it is easy to handle and install. This check valve would be suitable for those looking for a reliable, easy-to-install solution for their sump pump systems without worrying about frequent replacements due to wear and tear.