This PARA-SEAL valve is high performance butterfly valve of high durability, high seating performance.
It has several different seal ring constructions suitable to various service applications.
6300RB, 6400RB, 6500RA, 7300RA: Pneumatic Cylinder Actuator
3500RB, 3600RB: Solid State Electronic Actuator
5200RA: Pneumatic Diaphragm Actuator