Page 121 - bannerAnvil2010PipeFittingsCatalog2010

www.anvilintl.com 121
anvilets
Malleable Iron
Cast Iron
Small Steel
Fittings
Pipe Nipples &Pipe Couplings
Forged Steel
Fittings & Unions
Anvilets
Catawissa
J.B. Smith Products
Carton Information
Anvil Anvilets provide a strong branch pipe connection,
considerably stronger than a welded pipe-to-pipe connection.
Consequently, with good welding procedures, Anvil Anvilets
offer greater resistance to distortion and bursting.
Anvil Anvilets readily and economically permit the adding of
branch connectors to existing piping installations, eliminating
the relatively higher cost of cutting or disassembly and re-
assembly required for the installation of tees.
Anvil Anvilets of the same outlet size as a header or run pipe
size (i.e. “Full Size” Anvilets) are so proportioned that the
(ellipticallyshaped) hole in the header pipe has the minimum
weakening or distortion effect, and yet provides good fuid fow
characteristics.
Specifcations
Chemical and physical properties are rigidly controlled to ensure
consistently high quality. Physical and chemical test reports are
available on request. Traceability of individual Anvilets can be
established through the heat code of each ftting.
Anvil Anvilets meet the requirements of MSS standard SP-97.
They are forged from steel which complies with ASTM A105.
Threaded Anvilets - conform with ASME B1.20.1.
Socket-Weld Anvilets- dimensions conform with ASME B16.11.
Buttweld Anvilets- ends conform with ASME B16.25.
Reinforcement Requirements
ASME B31.1 Power Piping Code
ASME B31.3 Refnery Code
Forging Markings
Anvil Anvilets are clearly marked with the following:
• Outlet size
• Range of run pipe sizes that the Anvilet will ft
• The weight, schedule number, or pressure class
• The material specifcation
• Steel heat code identifcation
Installation Note
Anvil Anvilets are designed to have no more than a 1⁄16" gap
(1.6mm)between the base or skirt of the Anvilet when it is
seated directly upon the appropriate run pipe. However, it is
recommended that the skirt of Anvilets be held slightly above
the run pipe and tack welded to provide a small continuous
root gap between the skirt and run pipe before completing the
all-around welding beads or fllet.
Specials
Your local Anvil Branch will be more than happy to assist you with
specially machined outlets and those made of alloy material.
Pressure Temperature Ratings
MSS standard Practice SP-97 gives the following correlation
between ftting pressure class and pipe schedule number/wall
thickness designation for calculation of pressure-temperature
ratings:
Branch
Connection
Type
Pressure
Class of
Fitting
Branch
Connection Size
Pipe Wall
for Rating
Basis
NPS DN
Buttweld
STD 1⁄8 - 24 6 - 600 STD
XS/XH 1⁄8 - 24 6 - 600 XS/XH
SCH 160 1⁄2- 6 15 - 150 SCH 160
Threaded
3,000 1⁄4 - 4 8 - 100 XS/XH
6,000 1⁄2- 2 15 - 50 SCH 160
Socket-Welding
3,000 1⁄2- 2 15 - 50 XS/XH
6,000 1⁄2- 2 15 - 50 SCH 160
The maximum allowable pressure of a ftting is computed in
accordance with the applicable piping code or regulation for
straight seamless header (run) pipe or for material of equivalent
composition and mechanical properties to the ftting. Any
corrosion or mechanical allowances and any reduction in
allowable stress due to temperature or other service conditions,
must be applied to the pipe and ftting alike.
Forged Steel Anvilets