Series 55 pneumatically operated tank bottom valve has a body with attached welding neck and an inlet ports, a diaphragm seal and actuator. Key Features: Compact design for space restricted applications Simplified welding with provision of welding neck Optimized flow geometry Hermetical separation of fluids from the operating mechanism by diaphragm Fully machined from SS 316L barstock CIP/SIP capable and crevice free Zero dead leg and self-draining capabilities Fully Autoclavable Various internal surface finish available each with less than 0.40 Ra.