Applications
Recommended installation on outlet/discharge pipe for safety valves. Used on
steam service.
Features
The above illustration shows a discharge elbow and drip pan unity attached to a safety valve with female NPT outlet. For safety valves with flanged outlets – 2-inch to 4-inch – use companion flange, short nipple and drip pan elbow, all same size as valve outlet. 6- and 8-inch elbows have integral 125# ANSI B16.1 Flange.
Important – Length of discharge piping must be kept to a minimum. For design considerations see articles: ?Steam Flow Through Safety Valve Vent Pipes? by H.E. Brandmaier and M.E. Knebel (Dec. 1975) and ?Analysis of Power Plant Safety and Relief Valve Vent Stacks? by G.S. Liao (Nov. 1974) available through ASME Publications. http://www.asme.org/pubs/
