Check valves are an important component of every submersible pump water system. Why are they important? First, they allow your water system to maintain pressure when the pump shuts off. They also prevent backflow and upthrust and help minimize water hammer. Flomatic Valves has released the Model 80MDW-VFD Heavy Duty Deep Well Check Valve for use specifically with variable-frequency drive-controlled submersible pumps or other conventional pumps.

This deep well check valve is designed for well water use to support the weight of up to 3,300 feet of pipe and the well pump, making it suitable for industrial and municipal wells. “It offers high performance with low friction loss,” says Daniel Hidalgo, marketing manager for Flomatic Valves. “Constructed from very strong carbon steel, similar in strength to API J55 tubing, this unique valve is the perfect choice for deep-set pump applications and heavy hanging loads.”

The valve features a male inlet and female outlet body with eight round external-upset tubing threads 2 3/8 through 4 1/2 inches, or eight round male short casing threads and female long casing threads 4 1/2 through 9 5/8 inches. In addition, a corrosion-resistant, stainless steel spring and stem, combined with fusion-bonded epoxy coating inside and out allow for a longer service life. It comes standard with a 3/4-inch break-off plug for easy servicing.

The check valve features Flomatic’s signature spring-loaded metal-to-metal valve seat, which is designed to provide low friction loss, prevent backflow, and minimize hydraulic shocks in the system, providing years of trouble-free operation without maintenance when installed correctly. It is available in 12 different sizes, some of which are also available in an all 316 stainless steel assembly. It can operate at a maximum temperature of 200 degrees F and a maximum pressure of 4,400 psi. All valves are certified NSF/ANSI 372 and manufactured in a facility certified with an ISO 9001 and 14001 quality management system. In addition, each valve is hydro-tested to ensure a drip-tight seal at 4,500 psi.

“It is ideal for water well systems where a pump has to be set deep and space is of primary concern,” Hidalgo says. “It is a flow efficient check valve designed for deep well submersible pump applications.” 

800-833-2040; www.flomatic.com