FOR MODELS: JGW, JGR AND JGJ SECTION 1 - DESIGN SPECIFICATIONS & DATA
1/01 PAGE 1 - 19
Tightening Torque Procedures
Listed below are some procedures which make fastener tightening more accurate and will
help ensure that the proper torque is being applied.
1. Ensure that the torque wrench is properly calibrated and used by qualified person-
nel to achieve the required fastener tightening torque for all critical parts, except for
the crosshead balance/lock nut which may be tightened using the “tried and true”
slugging procedure.
2. Always check to determine over what range the torque wrench is accurate since
most torque wrenches are not accurate over their entire range.
FIGURE 1-9: SPIRALOCK THREADED VALVE ASSEMBLY - MARKED SPL
F
IGURE 1-10: DRAKE LOCK NUT
Bottom Views
Suction GuardDischarge Seat
BOTTOM HALF
TOP - LOCKING
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