Specifications - State of Delaware

SECTION 221116 - DOMESTIC WATER PIPING: continued
2.04 PEX TUBE AND FITTINGS:
A. PEX Distribution System: ASTM F877, SDR 9 tubing.
1. Fittings for PEX Tube: ASTM F1807, metal-insert type with copper or stainless-steel
crimp rings and matching PEX tube dimensions.
2. Manifold: Multiple-outlet, plastic or corrosion-resistant-metal assembly complying with
ASTM F877; with plastic or corrosion-resistant-metal valve for each outlet.
2.05 VALVES:
A. Bronze and cast-iron, general-duty valves are specified in SECTION 230523 - VALVES.
B. Balancing and drain valves are specified in SECTION 221119 - DOMESTIC WATER PIPING
SPECIALTIES.
2.06 WATER METERS:
A. Turbine-Type Water Meters: AWWA C701, totalization meter with 150-psig minimum
working-pressure rating; with registration in gallons or cubic feet as required by utility; and
with the following end connections:
1. NPS 2: Threaded.
2. Provide water meter with local register and high frequency pulse output compatible for
monitoring by the building Johnson Controls Metasys DDC system.
B. Displacement Water Meters (for Hydronic System Make-up): AWWA C700 nutating disc,
totalization meter with 150-psig minimum working-pressure rating; with registration in
gallons.
1. NPS 1: Threaded.
2. Provide water meter with high frequency pulse output compatible for monitoring by the
building DDC system.
PART 3 - EXECUTION
3.01 EXCAVATION:
A. Excavating, trenching, and backfilling are specified in DIVISION 31.
3.02 PIPE AND FITTING APPLICATIONS:
A. Transition and special fittings with pressure ratings at least equal to piping rating may be used
in applications below, unless otherwise indicated.
B. Flanges may be used on aboveground piping, unless otherwise indicated.
C. Grooved joints may be used on aboveground grooved-end piping.
D. Fitting Option: Extruded-tee connections and brazed joints may be used on aboveground
copper tubing.
E. Under-Building-Slab, Water-Service Piping on Service Side of Water Meter: Refer to
DIVISION 33.
F. Under-Building-Slab, Domestic Water Piping on House Side of Water Meter, NPS 4 and
Smaller: Soft copper tube, Type K (Type A); copper pressure fittings; and soldered joints.
G. Aboveground Domestic Water Piping: Use the following piping materials for each size range:
1. NPS 4 and Smaller: Hard copper tube, Type L (Type B); copper pressure fittings; and
soldered joints.
H. Non-Potable-Water Piping: Use the following piping materials for each size range:
1. NPS 3-1/2 and Smaller: Hard copper tube, Type L (Type B); copper pressure fittings;
and soldered joints.
I. Trap seal primer piping: PEX Tube, fittings for PEX tube; and crimped joints.
DEAN221116.DOC 221116-3