2.4.2 Pipe Connections
The TEFLON and polyurethane lined meters have ANSI raised faced flanges rated as Class 150. The
neoprene lined meters have ANSI full faced flanges rated as Class 150. Two flange gaskets are
supplied per meter; the mounting studs and nuts are furnished by the user.
Fastener threads must be clean and lubricated and flange nuts should be tightened in an alternate
pattern (Refer to Figure 2-4) to produce equal pressure distribution around the flange face. Bolt
torque should be limited to the values shown in TABLE 2-1 for the liner materials shown. PTFE lined
meters should be retorqued after 24 hours. Due to their resiliency, Polyurethane and Neoprene lined
meter bolts should be tightened to 1/2 the values listed in TABLE 2-1. Additional tightening up to the
values listed may be necessary to achieve an effective seal.
TABLE 2-1. RECOMMENDED BOLT TORQUES
METER SIZE
PTFE TEFLON, HARD RUBBER
ft-lbs (Nm)
14 in.
120 (160)
16 in.
115 (155)
18 in.
175 (240)
20 in.
155 (210)
24 in.
220 (300)
FIGURE 2-4. FLANGE BOLT
10DS3111A INSTRUCTION MANUAL
2-5
Содержание 10DS3111
Страница 9: ...FIGURE 1 2 ELECTRONIC COMPARTMENT WITH COVERS REMOVED 10DS3111A INSTRUCTION MANUAL 1 3 ...
Страница 16: ...FIGURE 2 2 OUTLINE DIMENSIONS 14 THROUGH 24 INCHES 10DS3111A INSTRUCTION MANUAL 2 3 ...
Страница 24: ...FIGURE 2 9 10DS3111 INTERCONNECTION WIRING 14 24 in 10DS3111A INSTRUCTION MANUAL 2 11 ...
Страница 32: ...FIGURE 5 1 DIAGRAM OF FLOWMETER CIRCUIT 10DS3111A INSTRUCTION MANUAL 5 2 ...