Available in brass and Type 303 stainless steel, ultraminiature Model CKV-M3 with elastomeric duckbil cracks open to allow flow down to 1/2 psi. Valve is made from 5 mm hexagonal stock with max length of 3/4 in. Suited for gas and pneumatic applications, it is available with inline barb-to-barb configuration, internal or external M3 threads, or any combination. Optional seal materials include silicone, fluorocarbon, and EPDM. Valve tips scale at just over 2 g.