Unlike conventional ball valves, our valve uses dual floating seats and a floating ball. All valves have an anti-static spring. The ball and seats are pressure energized, to assure a bubble-tight shut-off in high-pressure applications. The ball is pre-loaded with a dynamic tension spring to assure leak-tight sealing in low-pressure applications. The spring-loaded self-adjusting wedge seat assures leak-tight sealing in all operating conditions including temperature, pressure, or wear. Using this design positive leak-tight shutoff is assured for the full life of the seats. The seats are under compression loads only – no flexing or bending of the seat material occurs, permitting the use of relatively hard, high-temperature seat materials. Metal seating is easily accomplished, by utilizing this seat load methodology.
The top entry design allows for quick disassembly inline without removing the valve from the piping. This insures the piping to valve sealing stays intact and is permanent as the pipe itself. By removing the bonnet all components can be removed and serviced without special tools. This method of service and repair is ideal for critical services where replacing flange gaskets and spreading the piping would be hazardous if not impossible. Ideal for applications where welding into a line is necessary. No damage to seats and seals since they may be removed before welding.
Bonnet and stem seals can be made of a wide variety of materials including metal, graphite, Teflon, elastomeric, and more. A straight-through bore design provides for maximum flow with the least turbulence and minimal pressure drop. Quarter turn, long seat life, and low operating torques make Bertrem Valves particularly suitable for automation with electric or pneumatic actuators. High-cycle applications are easily accommodated with this unique design. Firesafe designs for flammable/hazardous fluids and gases.