risers Type L or M.
2.2.2
Solder
**************************************************************************
NOTE: The solders referenced are necessary for
compatibility with the fluids and metals contained
in solar energy systems and also required for piping
containing potable water.
**************************************************************************
ASTM B 32, Type Sb5, Sn94, Sn95, or Sn96.
2.2.3
Joints and Fittings for Copper Tubing
Wrought copper and bronze solder-joint pressure fittings shall conform to
ASME B16.22 and ASTM B 75M ASTM B 75. Cast copper alloy solder-joint
pressure fittings shall conform to ASME B16.18 and ASTM B 828. Cast copper
alloy fittings for flared copper tube shall conform to ASME B16.26 and ASTM
B 62. Brass or bronze adapters for brazed tubing may be used for
connecting tubing to flanges and to threaded ends of valves and equipment.
Cast bronze threaded fittings shall conform to ASME B16.15. Extracted
brazed tee joints produced with an acceptable tool and installed as
recommended by the manufacturer may be used. Grooved mechanical joints and
fittings shall be designed for not less than 862 kPa 125 psig service and
shall be the product of the same manufacturer. Grooved fitting and
mechanical coupling housing shall be ductile iron conforming to ASTM A 536.
Gaskets for use in grooved joints shall be molded synthetic polymer of
pressure responsive design and shall conform to ASTM D 2000 for circulating
medium up to 110 degrees C 230 degrees F. Grooved joints shall conform to
AWWA C606. Coupling nuts and bolts for use in grooved joints shall be
steel and shall conform to ASTM A 183.
2.2.4
Flanges
Bronze, Class 125 or 150 as applicable, ASME B16.24.
2.2.5
Dielectric Waterways and Flanges
**************************************************************************
NOTE: Since all wetted surfaces are required to be
nonferrous, the only location for dielectric
waterways to be considered is the penetrations to
the storage tank.
**************************************************************************
Waterways and flanges shall conform to the requirements of ASME B16.39.
Dielectric waterways shall have metal connections at both ends suited to
match connecting piping. Ends shall be threaded or soldered to match
adjacent piping. Dielectric waterways shall be internally lined with an
insulator specifically designed to prevent current flow between dissimilar
metals. Dielectric waterways and flanges shall be suitable for the
temperatures, pressures, and antifreeze encountered. Dielectric flanges
shall meet the performance requirements described herein for dielectric
waterways.
2.2.6
Bronze Gate, Globe, Angle, and Check Valves
**************************************************************************
SECTION 13600A
Page 11
Previous Page
