Rubber-Lined Check Valve

Service conditions

A check valve opens and closes automatically in response to fluid forces to restrict reverse flow. Its behavior depends on disc motion, velocity, differential pressure and installation orientation. Selection should consider flow changes and pump shutdown, balancing forward pressure drop against closing response.

A lining separates the process fluid from the underlying body. Selection depends on composition, temperature, permeation and vacuum or differential-pressure conditions. Protect the lining and flange-contact areas during installation and cleaning.