Torsion bar safety valve is designed for use on boilers operating at? Power Engineering Chapter 59 Torsion bar safety valve is designed for use on boilers operating at? A. 6000 kPa B. 4000 kPa C. 7000 kPa D. 8000 kPa E. 5000 kPa Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+