SMC Non-Return Valves Integral push in fitting connections for fast inline installation. These fittings are compact and lightweight with the advantage of one-touch fitting. Easily installed into your pneumatic installations. Features and Benefits •Can be used in compressed air or vacuum lines •Suitable for use with a wide range of tube types •Operating temperature -5°C to 60°C Product Application Information Ideal for most pneumatic applications due to their compact and lightweight design.