2.1.11
Pipe and Fittings
2.1.11.1
Clay Pipe
ASTM C 700, Class 1, Type I, Style a.
2.1.11.2
Nipple
ASTM A 733, standard or extra strong weight to match adjacent piping.
2.1.11.3
Pipe
As specified in TABLE I for service use and size. Underground fuel piping
shall be in accordance with Section 13202 FUEL STORAGE SYSTEMS.
2.1.11.4
Flanges
As specified in TABLE II for service use and size. Convoluted steel
flanges conforming to ASME BPVC SEC VIII D1 may be provided in lieu of
flanges conforming to ASME B16.5. Convoluted flanges shall be cold-formed
steel conforming to ASTM A 516/A 516M. Flanges shall mate with ASME B16.5,
Class 150 flanges.
2.1.11.5
Flange Gasket
Gasket shall be nonasbestos compressed material in accordance with ASME
B16.21, 1.6 mm 1/16 inch thickness, of self centering flat ring type. The
gasket shall contain aramid fibers bonded with styrene butadiene rubber
(SBR) or nitrile butadiene rubber (NBR). NBR binder shall be used for
hydrocarbon service. Metallic spiral wound nonasbestos gaskets shall be
used for steam lines.
2.1.11.6
Flexible Connector
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NOTE: Listed flexible connectors may be used when
allowed by NFPA 30 and when approved by local codes
as an alternative for swing joints.
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Flexible metal hose, corrugated type with braided wire sheath covering,
close pitch annular corrugations, rated for a working pressure of at least
1.03 MPa 150 psig, 300 mm 12 inch minimum live length, threaded end
connections and shall conform to requirements of UL 567. Metal for hose
and braided wire sheath shall be stainless steel, any type of AISI series.
2.1.11.7
Union
ASME B16.39, limited to 690 kPa 100 psig, type to match adjacent piping.
For higher pressure, union shall be ground joint cast steel or forged
steel. Unions with appropriate pressure and temperature ratings shall be
used.
2.1.12
Pipe Support
MSS SP-58 and MSS SP-69.
SECTION 15561A
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