Full bore gas ball valve with steel lever (N-N version) 4TECH DN20 nickel plated 3403600

Innovative ball valve for a safer gas installation
4TECH valves have four main features. The biggest innovation is the new, patented sealing system. The valve ball, in addition to Teflon seals, has an additional sealing in the form of copper rings. When the temperature around the valve rises as a result of a fire, the Teflon and rubber seals melt. In their place, there are copper rings, which seal the valve due to thermal expansion of the material. In this way, gas leakage is stopped and the risk of gas explosion is minimized.
The resistance of the valve to high temperatures means that the valve meets the requirements of the European standard EN 331:1998/A1:2010 for gas valves, which entered into force on September 1, 2012. Therefore, each 4TECH valve is CE marked on the body.