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TranSystems Corporation - LGM Construction

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501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11<br />

B. All pipes shall be supported in accordance with NFPA and FM, UL standards, except no chain or<br />

perforated steel hangers shall be used. Hangers for main and cross main pipework 2-1/2" and<br />

larger shall be wrought clevis, or ring hangers.<br />

2.7 FIRE SYSTEM VALVES<br />

A. Alarm Check Valve<br />

1. Valve(s) shall be complete with necessary control valves, strainers, gauges, and<br />

accessories for a complete installation. A gate valve shall be installed directly upstream<br />

of each alarm check valve. Valves shall be FM, UL approved.<br />

2. Provide minimum 3/4" relief valve on the system side of the alarm check valve of gridded<br />

systems to prevent build-up of high system pressure. The device shall have adjustable<br />

relief setting, preset to discharge at 175 psig. Pipe discharge to outdoors.<br />

3. Maximum total area coverage of systems connected to a single valve shall be based on<br />

the system hydraulic design but in no case shall the area exceed 52,000 sq. ft. (40,000<br />

sq. ft. for warehouse areas). Should one riser area provide protection for more than<br />

52,000 sq. ft. (52,000 sq. ft. for warehouse areas), multiple valves and laterals shall be<br />

provided.<br />

4. Alarm check valve shall be Victaulic Series 751, or Viking <strong>Corporation</strong> Model J-1.<br />

B. OS&Y Valve<br />

1. Valve(s) shall be FM, UL approved with cast iron body conforming to ASTM A-126 class<br />

B with rising stem and solid wedge disc suitable for fire protection service. Each valve<br />

shall have an approved tamper switch.<br />

2. Valve shall be Figure G-634 as manufactured by Stockham.<br />

C. OS&Y Valve (For Wall Indicator Post)<br />

1. Valve(s) shall be FM, UL approved with cast iron body conforming to ASTM Spec. A-126<br />

Class B with non-rising stem suitable for installation with a wall indicator post. Each valve<br />

shall have an approved tamper switch.<br />

2. Valve shall be Figure G-632 as manufactured by Stockham.<br />

D. Check Valve<br />

2.8 SPRINKLER HEADS<br />

1. Check valve(s) shall be FM, UL approved wafer type valve rated for 250 psig water<br />

service pressure.<br />

2. Valve shall be Model C as manufactured by Reliable Automatic Sprinkler Co., or equal.<br />

A. Sprinkler heads shall be FM, UL approved.<br />

FIRE PROTECTION 15550-5

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