Hays Fluid Controls, founded in 1865, is been committed to exceeding customer expectations, building high quality products, and providing a friendly safe environment for their employees to work in. Since 1963, Hays Fluid Controls has been the exclusive supplier to the US Navy for Automatic Flow Control Valves. Our Exclusive Mesurflo® technology, has been controlling the chilled water systems on submarines, surface vessels and weapons systems like the Patriot Missile Launcher for over 35 years.

Hays has grown to reach kitchens and bathrooms, industry and even submarines with solenoid valves, manual and automatic flow controls, special valves for irrigation systems, pulse meters and more. All with the quality and reliability of our Mesurflo valves which keep our subs running quiet when lives depend on it. So, just imagine what we can do for your installation.

Products

• Automatic Balancing Valves — Hays' patented Mesurflo® automatic flow control valves have been called the "Gold Standard" because their unique features and benefits make them the ideal solution for controlling flow in waterbased cooling and heating systems.
• Water Source Heat Pump and Fan Coil Connection Kits — Hose Kits are a convenient method of combining the advantages of flow control and a flexible connection. Our kits are supplied with a Mesurflo™ Automatic Balancing valve, a non-ported ball valve, two stainless steel braided hoses, and a ball valve with P/T ports. All kits are 100% leak tested before shipping!
• Pressure Independent Control Valves (PICV) — Smooth operation with existing valves Ensured. The Mesurflo PICV prevents the operating system from experiencing excessive flow. In conditions where higher than normal pressures occur, Mesurflo PICV lowers total system flow. This saves energy and further reduces costs. Mesurflo PICV also protects equipment from the detrimental effects of flow-induced erosion.
• Low Temperature Valves — The "Gold Standard" for controlling flow specifically designed for glycol systems operating at temperatures as low as 15°F. Models 2510LT and 2520LT are designed for supermarket display cases and walk-in coolers.
• Marine Products
• Manual Balancing Valves
• Components
• Solenoid Valves