Check Valves, Microchek The Microchek valve is a cartridge check valve incorporating an innovative guided poppet design. This valve is the heart of our system and may be used... and poppet are washed by the contact fluid each time the valve opens. This makes the valve tolerant to contaminated media. The Microchek valve incorporates our innovative check valve... system is available in a variety of polymers and elastomers to ensure compatibility with most liquids and gases. The Microchek valve has a low pressure drop and can be specified...