Page 200 - Estimators Piping Man Hour Manual
P. 200
Section Four—MECHANICAL INSTRUMENTATION 183
FLANGED RELIEF VALVES
MAN HOURS EACH
Inlet and Outlet Man Hour Each
Size Flange Rating
Inches 300# 600#
1 x 2 1.6 1.8
l V > x 2 1.6 1.8
1
l>2X2 /2 1.7 1.9
2 x 3 1.7 1.9
2'/> x 4 2.3 2.5
3 x 4 2.3 2.5
4 x 6 3.1 3.3
6 x 8 4,1 —
6x 10 4.7 5.0
8x10 5.4 _
Above are standard relief valves, A-216 grade WCB carbon steel body, closed bonnet with screwed cap. tungsten
steel spring. Maximum temperature 800° F.
Man hours include checking out of storage, hauling to erection site, installing, testing, and checking.
Man hours do not include piping to or from the valve or supports if required. See other piping tables for these
requirements.
