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Master format 3 part specification
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Metal on Metal. Optional Trim- Bronze w/ Buna Seat, s/s and s/s w Buna Seat. Center-guided plug. (Positive noiseless opening and closing) Plug
activated at 1/4 to 1/2 psi (1723 Pa to 3448 Pa).
1. Di-Electric Insulated Pipe Connections: Shall be Di-Lok Figure 7088 or 7089 grooved by grooved or grooved by thread insulating nipples.
Inhibits the formation of a galvanic cell between dissimilar metals. Housing- Steel Tube to ASTM A513. Liner- Polypropylene to ASTM
D4140. 300 psig (1.9 KPa). Operating temperature -40 degrees F to +230 degrees F (-40 degrees C to 110 degrees C).
E. Grooved Strainers: Shall be Gruvlok Series 7260-T ("Tee" Type) or 758-G or 768-GF ("Wye" Type) strainers.
1. Tee Strainer Series 7260: Sizes 2 inches to 24 inches (51 mm to 610 mm). Strainer in-line, twin-fold basket provides 100 percent of the
projected pipe area for open fow. Body- Ductible 2 inches to 12 inches (51 mm to 305 mm) Malleable Iron ASTM A47 or Ductile Iron ASTM
A536, Size 14 inches (356 mm) and larger: Carbon Steel Pipe ASTM A53. Basket- Stainless steel Type 304-basket standard #12 mesh (1/16 inch
perf.) (1.6 mm perf.) Through 3 inches (76 mm). Sizes 4 inches and larger standard with #6 mesh (1/8 inch perf.) (3.2 mm perf.). Monel or
other alloy baskets, magnets, and various mesh sizes optional. Horizontal or vertical service usage.
2. Wye Strainers 758-G & 768GF: Size range 2 inches to 12 inches (305 mm). Body- Ductile iron. 300 psig (1.9 KPa). Baskets- Same as Tee Series.
F. Grooved Suction Diffusers: Shall be Gruvlok Series 7250. Sizes 2-1/2 inches to 16 inches (64 mm to 406 mm). Body- Carbon steel to ASTM A-53
body for all sizes. 300 psig (1.9 KPa). Strainer Basket- Stainless steel (3/16 inch perf.) (4.76 mm perf.) With start-up #16 mesh pre-flter removable
screen. Blow-down and gage plug standard.
G. Flexible Connectors: Sizes 2 inches to 12 inches (51 mm to 305 mm). Stainless steel tube and braid design. Carbon steel grooved, threaded &
fanged end. Rated working pressure 150 to 300 psi (1.0 to 2.0 KPa).
H. Triple Duty Combination Valves: Shall be Gruvlok "Tri-Service" (FTV-A/FTV-S) service valves. Sizes 2-1/2 inches to 12 inches (64 mm to 305 mm).
Services- Combination shut-off, non-slam silent check and full throttling. Throttling fow indicator is standard. Horizontal or vertical service
usage. Flow measurement ports on either side of valve body. Fixed or portable meters available for differential pressure measurement.
I. Calibrated Circuit (Setter) Balancing Valves: Shall be GBV-Gruvlok "Circuit Balancing" Valve. Sizes 1/2 inch to 12 inches (13 mm to 305 mm).
Multi-turn adjustment. Positive shut-off. Tamper-proof memory stop. Pressure differential read-out ports. Differential Pressure Meter-
Provide CBV differential pressure meter/transducer as required. Direct Flow readout. Proportional balancing.
J. Automatic Air Vents - Gruvlok Models GAV-15 rated 150 psig and GAV-30 rated 300 psig.
2.3 PIPING
A. Steel Piping:
1. Refer to Section 15050 for piping material.
B. Copper Piping:
1. Refer to Section 15050 for piping material.
C. Stainless Steel Piping:
1. Refer to Section 15050 for piping material.
D. Aluminum Piping:
1. Refer to Section 15050 for piping material.
E. Steel Piping:
1. Refer to Section 15050 for piping material.
F. Plastic Piping:
1. Refer to Section 15050 for piping material.
2.4 ACCESS PANELS
A. Provide access panels as required by Section 08310 - Access Doors and Panels.
2.5 FIRESTOPPING MATERIALS
A. Provide fre stopping assemblies as required by Section 07840 - Firestopping.
2.6 EQUIPMENT SUPPORTS
A. Fabricate equipment supports not provided by equipment manufacturer from structural grade steel meeting requirements of Section 05120
Structural Steel. Submit calculations with shop drawings.
2.7 EQUIPMENT ANCHOR BOLTS AND TEMPLATES
A. Provide templates to ensure accurate location of anchor bolts.
SECTION 15500 (CONT.)
Piping Specialties
GL-2.10