The Pyropress TX135 series of transformer relief valves have an effective relief area of 140 cm2, and are suitable for transformer up to 45,000 litres of oil capacity. 

Three models are available to provide opening pressure ranges between 4 and 12 psi. These are factory set to customers requirements.

The NBR seals fitted to the TX135 series valves are suitable for use with silicon and midel transformer oils. The protective cover is designed to direct the flow of oil in a single direction, preferably safely to the ground without risking personal injury. Which lends itself for easy attachment to ducting.

 These valves are suitable for use in vacuum applications.