User Guide

INSTALLATION, OPERATION, & MAINTENANCE OF APOLLO
BARSTOCK VALVES
I965100.B 10/2013
1. Remove the handwheel or handle nut (1), handwheel or handle (2), packing nut (3), and packing
gland (4) and packing washer (5), if applicable.
2. Remove the old stem packing (6). Care should be taken not to scratch or damage the stem or
stuffing box.
3. Clean and inspect the stem, stuffing box, and gland. Parts should be replaced if any heavy
scratches, nicks, or corrosion are found.
4. Install the new stem packing.
5. Replace the packing washer (5), if applicable, the packing gland (4), packing nut (3), handwheel
or handle (2), and handwheel or handle nut (1).
6. Tighten the packing nut until the packing is lightly compressed. Cycle the valve several times.
7. If slight stem leakage occurs after the system is pressurized, continue tightening the packing nut in
quarter-turn increments until the leakage stops.
Handwheel Nut (1)
Handwheel (2)
Packing Nut (3)
Packing Gland (4)
Optional Packing
Washer (5)
Stem Packing (6)
Stem (7)
Hub (8)
Body (9)