A steam safety relief valve connects to a drip pan elbow matching the valve's discharge size. A steam vent sized two pipe sizes larger than the elbow discharge extends to the atmosphere through discharge piping, maintaining manufacturer-recommended dimensions. A minimum three-quarter-inch drain pipe extends from the drip pan elbow tapping to the nearest floor drain. Unions are provided typically on piping connections to facilitate maintenance and removal.
STEAM SAFETY RELIEF VALVE UNION (TYP) SAME SIZE AS ELBOW TAPPING SIZE, 3/4" MINIMUM PIPE DRAIN TO NEAREST FLOOR DRAIN DRIP PAN ELBOW FOR EACH STEAM SAFETY RELIEF VALVE DIMENSION AS RECOMMENDED BY ELBOW MANUFACTURER STEAM VENT TWO PIPE SIZES LARGER THAN ELBOW DISCHARGE SIZE. EXTEND TO ATMOSPHERE THROUGH DISCHARGE PIPING SEE DRIP PAN ELBOW AND SAFETY RELIEF VALVE DISCHARGE PIPING DETAIL SHORT AS POSSIBLE
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