PFA Lined Valves Designed for High Corrosion, High Purity. The Chem-Flo Series valve disc has a minimum 1/8" (3mm) thickness of pure virgin PTFE encapsulated over 316 stainless steel discs. High strength, square drive ensures a positive shaft to disc connection. Square drive offers direct ISO mounting of gear operator and automation equipment. Disc floats inside the seat for positive sealing and extended seat life. No pins or bolts exposed to flow. A lock plate and two screws mechanically retain the shaft in the body ensuring a blow-out-proof stem design.
Design Advantages:
ASME B16.34 Valve Body Design
ISO 5752 face-to-face
Low Pressure Applications and no back pressure to seat
Spring check type: Universal installation orientation
Ball check type: Vertical installation only, with flow direction from bottom up