What is the correct torque specification for tightening the throat seals on the pumps?

All pump sizes require a torque specification of 25-30 ft-lb (34-41 N•m) for the packing nut. Ensure there is zero pressure on the pumps when adjusting, and always follow the Pressure Relief Procedure prior to tightening seals. Throat seals should be checked and tightened once a week. (Page 42)