shall have position indicator and pilot circuit strainer.
2.14
PIPING ACCESSORIES
2.14.1
Pipe Hangers and Supports
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NOTE: Drawings should show details and spacing of
pipe supports and include appropriate seismic zone
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MSS SP-58 and MSS SP-69, of the adjustable type, except as modified herein
or indicated otherwise. Provide steel pipe hangers and supports. The
finish of rods, nuts, bolts, washers, hangers, and supports shall be
hot-dip galvanized.
2.14.1.1
Pipe Protection Shields
MSS SP-58 and MSS SP-69, Type 40, except material shall be Type 316
stainless steel. Provide at each slide type pipe hanger and support.
2.14.1.2
Low Friction Supports
Supports shall have self-lubricating antifriction bearing elements composed
of 100 percent virgin tetrafluoroethylene polymer and reinforcing
aggregates, prebonded to appropriate backing steel members. The
coefficient of static friction between bearing elements shall be 0.06 from
initial installation for both vertical and horizontal loads and deformation
shall not exceed 0.05 mm 0.002 inch under allowable static loads. Bond
between material and steel shall be heat cured, high temperature epoxy.
Design pipe hanger and support elements for the loads applied.
Antifriction material shall be a minimum of 2.30 mm 0.09 inch thick. Steel
supports shall be hot-dip galvanized. Units shall be factory designed and
manufactured.
2.14.1.3
Miscellaneous Metal
ASTM A 36/A 36M, standard mill finished structural steel shapes, hot-dip
galvanized.
2.14.1.4
Anchors, Bolts, Nuts, Washers and Screws
Hot-dip galvanized steel, except provide Type 316 stainless steel bolts,
nuts, washers, and screws under piers.
2.14.2
Strainers
Provide 'S' or 'T' pattern, [duplex type], except as modified herein.
Flanged end connections shall be designed in accordance with ASME B16.5,
Class 150; steel bodies, except Type 304 or 316 stainless steel, and 3003,
6061, or 356-T6 aluminum alloys. Strainers shall have removable baskets of
7-mesh, Type 316 stainless steel wire screen unless other mesh is
indicated. Pressure drop for clean strainer shall not exceed 21 kPa (gage)
3 psig at design flow rates. Provide strainer with air eliminator.
2.14.3
Gages
ASME B40.1, single style pressure gage for fuel with 114 mm 4.5 inch dial,
SECTION 15194N
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