The valves, from noncorrosive (or a suitably protected) material, work at –40 to 212°F (–40 to 100°C). Overtightening or minor abuse encountered in handling or during factory/field installation will not cause valve malfunction. The fasteners prevent loosening under normal operating conditions. The valve’s operating handle displays open and shut positions and can be manually locked in either position. Available sizes range from 2 to 8 in. including ANSI standard and OEM-specific flange configurations.

Unifin International, 1030 Clarke Rd., London, Ontario, N6V 3B2, Canada, (888) 451-0310,