Quick Answer
Check valves like diaphragm valves, spring-loaded valves, or piston valves are commonly recommended for pumps, particularly in water well deep pump applications, due to their reliable shut-off and minimal maintenance requirements.
Recommended Check Valve Types for Water Well Pumps
Water well deep pumps require reliable check valves to prevent backflow and contamination of the well water. Diaphragm valves are a popular choice for this application due to their simplicity and effectiveness. When selecting a diaphragm valve, consider a model with a durable, corrosion-resistant diaphragm material, such as EPDM or FKM, and a stainless steel or brass body.
Spring-Loaded Check Valves for High-Pressure Applications
For higher-pressure water well pump applications, spring-loaded check valves are a suitable option. These valves feature a spring-loaded piston that ensures a tight seal, even at high pressures. When choosing a spring-loaded check valve, look for a model with a high burst pressure rating, such as 3000 psi, and a durable spring material, like stainless steel.
Piston Check Valves for Large Flow Rates
Piston check valves are another option for water well deep pumps, particularly in applications with high flow rates. These valves feature a piston that moves up and down to seal the valve, providing a reliable shut-off. When selecting a piston check valve, consider a model with a large piston diameter, such as 2 inches, and a durable sealing material, like Teflon. This will ensure efficient flow and reliable shut-off in high-flow applications.
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