In-Line Check Valves

Shop in-line check valves for industrial fluid-control systems where flow must move in one direction while reverse flow is automatically restricted. This collection includes Midland Industries in-line check valves in brass, bronze, and stainless steel, with multiple threaded connection styles and sizes for a range of piping and equipment applications.

In-Line Check Valves for Backflow Prevention

In-line check valves are installed directly in the flow path and operate automatically as system pressure changes. Forward pressure opens the valve, while reverse pressure forces it toward the closed position, helping prevent unwanted backflow through piping, pumps, equipment, and other system components.

Brass, Bronze and Stainless-Steel Check Valves

Available body materials include brass and cast bronze for many general-purpose fluid applications, along with 304 stainless-steel options where additional corrosion resistance is required. The collection also includes selected Y-pattern strainer check-valve configurations.

Threaded connection options include FNPT, FPT, and FIP configurations, with nominal sizes ranging from compact fractional sizes through larger industrial connections.

Choosing an In-Line Check Valve

Before ordering, confirm the nominal size, inlet and outlet connection types, body material, pressure rating, cracking pressure, seal compatibility, operating temperature, and intended fluid. These specifications determine whether the valve is appropriate for the system and operating conditions.

For other backflow-control designs, browse our complete check valves collection or our swing check valves.