Upchurch Scientific? Nonmetallic 1/4-28 Inline Check Valves provide excellent backflow protection for sensitive equipment along with outstanding chemical resistance guaranteed by the PEEK? polymer and perfluoroelastomer construction

These Check Valves function well up to moderately high-pressure applications. Low internal volume allows these to be used in areas where flow path volume is important. However, higher flow rates can pass through with minimal pressure drop.

Note: Upon initial use, or following a period of exended inactivity, the cracking pressure for these check valves may be somewhat higher than the stated cracking pressure.

Additionally, the metal-free composition of these Check Valves makes them perfect for use with corrosive fluids or biological samples.