Hansen Technologies Corporation's(Burr Ridge, IL) new, reduced-capacity pressure-relief valves H5600R and H5602R can be placed in halocarbon service when rupture discs are used. The valves have approximately 1/3 the capacity of the company's H5600 Series valves. Standard pressure settings such as 150, 175, 200, 225, 250, 300, 325, 350, and 400 psig are available.