DeZURIK
BHP High Performance Butterfly Valves
November 2015 Page 7 D10503
Replacing Packing
Several packing options are available. See Figure 1 for parts identification.
Pipeline pressure can cause personal injury or equipment damage. Relieve the
pressure in the pipeline before removing the packing gland.
1. Discontinue flow and relieve pipeline pressure.
Accidental operation of powered actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
2. If the actuator is powered, disconnect and lock out the power to the actuator.
3. Remove the actuator as described in the actuator instructions and remove the actuator bracket from
the valve.
4. Remove the two gland nuts (A15) and remove the gland (A12).
Live-loaded packing options include a flat washer (A37) and several spring washers (A36)
under each gland nut. When required, the gland consists of two pieces: gland (A12) and gland plate
(A39).
5. Remove the retaining ring (A46) from the shaft (A4).
6. Remove the packing washer (A10) and all of the packing (A11).
7. If the valve has the dual packing option, remove the secondary packing chamber (A17), the gasket
(A16) and the secondary packing (A26).
8. Remove any packing fragments and ensure that all packing chamber sealing surfaces are clean.
9. Follow the procedure for the applicable packing option:
• PTFE V-Flex Dual-Seal Live-Loaded Packing Option (TCDL) —page 8
• PTFE V-Flex Packing Option (TC) —page 9
• PTFE Dual-Seal with Mechanical Spring Packing Option (TMD) —page 10
• PTFE V-Flex Live-Loaded Packing Option (TCL) —page 11
• Carbon Graphite Packing Option (G1) —page 12
• Graphoil Packing Option (G2) —page 12
• Graphoil Live-Loaded Packing Option (G2L) —page 13
• Graphoil Dual-Seal Packing Option (G2D) —page 14
• Graphoil Dual-Seal Live-Loaded Packing Option (G2DL) —page 15
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