21. On installations requiring Ansul flanged components,
the flange gasket material must be 304 stainless steel
Flextite Super Style CG 304.
22. The following torque specifications are required when
using flanged components:
Bolt Dia. Torque
_______ ______
5/8 in. 89 ft. lbs. (120.7 Nm)
3/4 in. 107 ft. lbs. (145.1 Nm)
7/8 in. 162 ft. lbs. (219.6 Nm)
1 in. 244 ft. lbs. (330.8 Nm)
1 1/8 in. 322 ft. lbs. (436.6 Nm)
1 1/4 in. 410 ft. lbs. (555.9 Nm)
FIGURE 7.1
INSTALLING DISTRIBUTION PIPING (Continued)
General Piping Requirements (Continued)
17. Nozzles to be located at the top of the hazard area,
aimed downward.
18. Make certain the I.D. of all 1/4 in. piping used in the
agent distribution system is within manufacturer’s tol-
erance. Undersized I.D. of pipe will cause pressure
and agent flow problems.
19. Maximum amount of pipe and elbows between any
tee in the manifold is 20 ft. (6.1 m) and 9 – 90° elbows.
See Fig. 7.1.
20. Total amount of pipe allowed between the manifold
distribution tee and all pressure reducers is 100 ft.
(30.5 m). Also, each run allows a maximum of 9-90°
elbows. See Fig. 7-1.
SECTION VI
UL EX-4510 12-1-01 Page 6-8
Installation
20 FT. MAX.
(6.1 m)
20 FT. MAX.
(6.1 m)
20 FT. MAX.
(6.1 m)
MANIFOLD
DISTRIBUTION TEE
20 FT. MAX.
(6.1 m)
20 FT. MAX.
(6.1 m)
100 FT. MAX.
(30.5 m)
002206
002207
20 FT. MAX.
20 FT. MAXIMUM
TYP.
100 FT. (30.5 m)
MAXIMUM
20 FT. MAXIMUM
TYP.
100 FT. (30.5 m)
MAXIMUM
002208
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