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Doc. P/N 8.8128.00.3
Rev. 3 / July, 2020
Figure 6 - Pretorquaeble Holder (TQ+/TQ(+) Full Torque Configuration Shown)
10.
Check gap between base and hold down. The gap must be the same size on all sides of the assembly. This
can be assured by measuring the distance between the hold down and base at various places around the
circumference of the assembly. Adjust pre-assembly screws if necessary to provide an even gap (See Figure
7).
Figure 7 - Gap Inspection
11.
If holder configuration is TQ, TQ+ or TQ(+) Full Torque, torque the cap screws to the values shown on the
tag of the holder using crisscross pattern in 20% increments until the torque specified on the tag is achieved
on all cap screws. The torque values of the flange studs can be found on the tag of the rupture disc.
CAUTION: The torque value on the tag of the disc and the tag of the holder may vary. Make sure to use the
proper value.
12.
If holder configuration is TQ, TQ+ or TQ(+) Full Torque, reconfirm the gap per step 10 after the cap screws are
torqued.
CAUTION: For TQ(+) Full Torque, depending on the flange execution do NOT use the torque value as shown on the
nameplate of the bursting disc. The user must confirm the required load or torque value required when ordering.
Summary of Contents for RD300 Holder
Page 17: ...Notes...