Audco india offers trunnion mounted ball valves. Ail trunnion mounted ball valves are designed for upstream sealing. The feature enables on-line affirmation of proper seat sealing. The load generated by the line fluid on ball is absorbed by the trunnion bearings and is directly transmitted to the valve body. The seat design has a built-in automatic cavity relief mechanism. Ail trunnion mounted ball valves have a bottom entry stem design, where the stem is inserted from inside the body. The higher the line pressure, the tighter the seal. An elastomer seal in the form of an o-ring is located at the lower end of the stem, which provides the first level of protection to the atmosphere. Valves are provided with vent and drain connections for venting/draining of the valve cavity. Vent and drain connections can also be used for on-line affirmation of valve sealing. Ail trunnion mounted ball valves come with a variety of end connections: flanged, butt-weld and hub. The valves come with an integral mounting flange with drilled holes suitable for mounting gear units and actuators. Valves of sizes 8" and above are provided with lifting lugs and foot support. Valves can be provided with any of the following operating devices: lever/gear operated for manual operation, electrical actuators, gas/pneumatic actuators and gas-over-oil actuators.
