Page 199 - Estimators Piping Man Hour Manual

182 Section Four—MECHANICAL INSTRUMENTATION

FLANGED RELIEF VALVES

MAN HOURS EACH

Inlet and Outlet Man Hours Each
Size Flange Rating
Inches 150# 300# 600#
1x2 1.4 1.6 1.8
Ik:x2 1.5 1.6 1.8
1^x2'^ 1.5 1.7 1.9
T/jx3 1.5 _
2 x 3 1.6 1.7 1.9
2!4 x 4 — 2.3 2.5
3 x 4 2.0 2.3 2.5
4 x 6 2.7 3.1 3.3
6 x 8 3.6 4.1 4.4
6 x 10 — 4.7 5.0
8x10 4.8 5.4 5.8
Above are standard relief valves A-216 grade WCB carbon steel body, closed bonnet with screwed cap, carbon steel
spring. Maximum temperature 450° F.
Man hours include checking out of storage, hauling to erection site, installing, testing, and checking out.
Man hours do not include piping to or from the valve or supports if required. See other piping tables for thesf
requirements.