The Bray/McCannalok high-performance, high-pressure, high and low temperature butterfly valve . Full rated ANSI Class 150, 300 & 600 valves in wafer and lug bodies. The unique, two part seat design features an energized O-ring fully encapsulated in the RTFE seat for bi-directional bubble-tight shut-off under high pressure, low pressure and vacuum. A double offset stem and disc design reduces seat wear, extends service life and reduces torque. A superior Fire Safe version is available. The temperature range of the Series 40 is from -20°F (-20°C) to 500°F (260°C) with operating pressures up to 1480 psi (102 bar).

For manual operation, on-off and throttling service. This quarter turn handle has a locking spring. The bolted notch plate allows positive disc position indication for 1"-12" (25mm-300mm) valves.

Self-locking for heavy duty service. Manual operation for on-off and throttling use for 2"-48" (50mm-1200mm) valves. Completely weatherproof and self lubricated with position indicator and adjustable travel stop. Chainwheel accessory available. A Stainless Steel housing is also available.

For manual override of pneumatic actuators . During pneumatic operation of the valve, the worm of the gear unit is disengaged. Should the valve require opening or closing in the event of power loss, manual rotation of the declutch lever will provide a camming action and engage the worm to the segmented worm gear. Reverse rotation of the lever will allow for disengagement of the unit. Excellent for safe handling of spring return actuators. Available for 2"- 36" (50mm-900mm) valves.