PTFE Seated Butterfly Valves for food processing, chemical, and sanitary applications | Series 72/73

• One piece wafer and lugged body for strength and stability in extreme environments.
• Heavy duty top plate is drilled and slotted to ISO 5211 and other existing valve drillings, thus allowing ease of automation and interchangeability.
• Two part polyester coated body provides a tough and durable coating against corrosion.
• All 316 stainless steel discs are polished to a mirror finish.
• Discs have a streamlined design, providing higher Cv and lower pressure drop.
• Oversized shafts allow for greater strength and thus more stability to the disc.
• A high strength machined Double D connection ensures a positive shaft-to-disc connection.
• PTFE and elastomer are both vulcanized to a rigid phenolic ring. This cartridge seat provides a stable platform, eliminating movement of the PTFE and elastomer.
• Torque fluctuation is eliminated by the consistent conformity of the seat, provided for by the cartridge design.
• Cartridge design allows for full field replacement.
• The Flow Line shaft seal is achieved through a continuous pressure exerted from the flatted area of the seat to the machined flatted area of the disc.
• The raised flatted area of the seat corresponds precisely with the machined flatted hub area of the disc. These matching flatted surfaces provide a wide sealing area for the elastomer backed PTFE seat to exert pressure against, forming the primary seal.
• Secondary sealing is provided by a 360° machined radius on the flatted hub.

For complete Features, please refer to the Flow Line Valve and Controls Brochures.

• Series 72/73 1"-24" Butterfly Valves, FLBVT1 Brochure

• Series 72/73 PTFE Seated Butterfly Valves, How To Order
• Series 72 Butterfly Valves, Sizes 1"-1.5" 72-003 Technical Drawing
• Series 72 Butterfly Valves, Sizes 2"-12" 72-001 Technical Drawing
• Series 72 Butterfly Valves, Sizes 14"-24" 72-002 Technical Drawing
• Series 73 Butterfly Valves, Sizes 1"-1.5" 73-003 Technical Drawing
• Series 73 Butterfly Valves, Sizes 2"-12" 73-001 Technical Drawing
• Series 73 Butterfly Valves, Sizes 14"-24" 73-002 Technical Drawing
• Applicable Standards
• Application and Corrosion Data
• Bolt Pattern and Torque Specification

• Series 72/73 2"-12" Butterfly Valves, FL 2032 Butterfly Valve Torque Selection Guide
• Series 72/73 14"-24" Butterfly Valves, FL 2033 Butterfly Valve Torque Selection Guide
• Series 72/73 Butterfly Valves, FL 5028 Butterfly Valve Torque Factor Guide pg 1 of 2
• Series 72/73 Butterfly Valves, FL 5028 Butterfly Valve Torque Factor Guide pg 2 of 2
• Series 72/73 Butterfly Valves, FL 5040 Butterfly Valve Cv Values

The Series 72/73 can be fully automated throughout its size range, by either pneumatic or electric actuators. Flow Line’s extensive automation capabilities are due to the fact that we developed our actuator and accessories from the ground up. Our automation products were designed with the torque needed to be able to automate all Flow Line valves. Because all Flow Line valves are kept up to the latest ISO 5211 standards, there is no need for brackets and couplers when using Flow Line actuators on Flow Line valves. We give you a single source for quality automation packages.