Jordan Valve Mark D & DA Series Globe & Angle Control Valve - Manual (Page 3)

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Packing Lubrication
An optional lubricator or lubricator/isolating valve
(Figure 1) may have been installed in place of the pipe
plug within the tapped bonnet. This is used for PTFE/
composition or other packing that require lubrication.
Use a silicon-base lubricant. Packing used in oxygen
service does not require lubrication.
Lubricator - turn the cap screw clockwise to force the
lubricant into the packing box.
Lubricator/isolating valve - open the isolating valve
before turning the cap screw to add lubricant, and
close the isolating valve after lubrication is completed.
Packing Maintenance
Contact your Jordan Valve representative for specific
packing orientation, composition and arrangements.
1. For spring-loaded single PTFE V-ring pack
ing, the spring (Key 16) maintains a sealing
force on the packing. Stop leakage around
the packing follower (Key 11) by tightening
the packing nuts. If the shoulder of the
packing box is touching the top of the bonnet
and leakage cannot be controlled, please
see “Packing Replacement.”
2. If there is packing leakage with other than
spring-loaded packing, try tightening the
packing flange nuts (Key 2) to the minimum
torque value shown in Table 1. Do not exceed
the maximum torque value shown in Table
1. Exceeding the maximum torque value may
cause excessive friction to result.
3. If the packing (Key 13) is relatively new and
tightening the packing flange nuts does not
stop the leakage; a worn or nicked valve stem
or damaged packing box bore might prevent a
proper seal. Follow the steps for Packing
Replacement and inspect the valve stem and
packing box wall during the procedure
Lubricator
Lubricator/Isolating Valve
Figure 1: Optional Lubricator and Lubricator/
Isolating Valve
Valve Size (in.)
Recommended Torque
Lbf•ft N•m
1 780 1060
2 1500 2030
Valve Size (in.)
Recommended Torque
Lbf•ft N•m
1 300 407
2 515 698
Table 2: Torque for Bonnet to Body Joint
Table 3: Torque for Seat Ring (Key 8)
M
ark
D
anD
Da S
erieS
G
lobe anD
a
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S
tyle
C
ontrol
V
alVeS