Specifications - Lord and Son Construction, Inc.

an overall aluminum-polyester or tinned-copper cable-shield tape, overall 20
AWG tinned-copper cable drain wire, and overall cable insulation.
2.5.5 Transformers
Transformers shall be UL 5085-3 approved. Transformers shall be sized so
that the connected load is no greater than 80% of the transformer rated
capacity.
2.6 AUTOMATIC CONTROL VALVES
Valves shall have stainless-steel stems and stuffing boxes with extended
necks to clear the piping insulation. Valve bodies shall meet ASME B16.34
or ASME B16.15 pressure and temperature class ratings based on the design
operating temperature and 150% of the system design operating pressure.
Unless otherwise specified or shown, valve leakage shall meet FCI 70-2 Class
IV leakage rating (0.01% of valve Kv). Unless otherwise specified or shown,
valves shall have globe-style bodies. Unless otherwise specified:
a. Bodies for valves 1.5 inches and smaller shall be brass or bronze, with
threaded or union ends.
b. Bodies for 2 inch valves shall have threaded ends.
c. Bodies for valves 2 to 3 inches shall be of brass, bronze or iron.
d. Bodies for valves 2.5 inches and larger shall be provided with flangedend
connections.
e. For modulating applications, valve Kv (Cv) shall be within 100 to 125%
of the Kv (Cv) shown.
f. For two position applications (where the two positions are full open
and full closed) the Kv (Cv) shall be the largest available for the
valve size.
g. Valve and actuator combination shall be normally open or normally
closed as shown.
2.6.1 Ball Valves
Balls shall be stainless steel or nickel plated brass. Valves shall have
blow-out proof stems. In steam and high temperature hot water applications,
the valve-to-actuator linkage shall provide a thermal break.
2.6.2 Butterfly Valves
Butterfly valves shall be threaded lug type suitable for dead-end service
and modulation to the fully-closed position, with carbon-steel bodies and
non-corrosive discs, stainless steel shafts supported by bearings, and EPDM
seats suitable for temperatures from -20 to plus 250 degrees F. The rated
Kv (Cv) for butterfly valves shall be the value Kv (Cv) at 70% (60 degrees)
open position. Valve leakage shall meet FCI 70-2 Class VI leakage rating.
2.6.3 Two-Way Valves
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