The Z Series high temperature butterfly valve is designed to regulate the back pressure of exhaust gasses during engine testing at temperatures as high as 750^oC. The wafer pattern valves are manufactured in sizes 2” to 16” operating at a maximum differential pressure of 3.5 bar g at elevated temperature.

The valve can be manually operated (screw lockable in any position) or pneumatically or electrically actuated with 4-20mA positioners. Actuated versions incorporate an extension stem designed to prevent heat from being conducted to the actuator.

The wafer pattern body fits between BS, DIN and ANSI flanges. Special adapters e.g. 2" flanged to 2" screwed NPT, mating high temperature gaskets and flange bolting can also be supplied.

• Sizes DN40 to DN400

• Working temperature 750^oC maximum

• 3.5 bar.g pressure differential @ 750^oC

• Wafer pattern to suit BS, DIN and ANSI flange standards

• Lockable manual operation

• Optional electric or pneumatic actuation

• 4-20mA or 3-15 p.s.i (0.2-1.0 Bar.g) positional control

• Dual valve Y diverter options

• Low pressure drop

• Limited leakage metal seated versions available

• Custom designs optional