The Pressure Cooker Safety Valve from The Indus Valley is made of premium quality food-grade material. Strong and durable the Lead-free Safety Valve is thoughtfully designed to fit perfectly on all The Indus Valley pressure cookers. No worries about changing the pressure cooker safety valve anytime soon because it is really sturdy durable and rust resistant too! DID YOU KNOW? This Safety Valve contains a fusible alloy pellet that melts to let out the steam in case the Gasket Release System (GRS) fails. Thus ensuring double safety.