Connect standard 1/4-28 Inline Check Valves to any 1/4-28 flat-bottom port to limit flow to one direction

Three pressure values are used when describing check valves; CRACKING PRESSURE is the pressure required for the valve to open in the direction of intended flow. MAXIMUM PRESSURE is the maximum pressure the valve can experience in the reverse direction without leaking backwards. BACK PRESSURE CREATED is the amount of back pressure generated by the check valve with 50mL/min. room temperature water flowing in the intended direction.

Then thread a 1/4-28 flat-bottom fitting into the check valve to connect tubing. Once installed, the spring-actuated sealing system eliminates back flow helping to prevent upstream contamination or damage. The unique design of this product also eliminates the additional tubing cuts and connections required to install conventional inline check valves. These check valves offer compatibility with most solvents used in chromatography. Use standard 1/4-28 flat-bottom fittings to connect 1/16" or 1/8" O.D. tubing.