Technical data

c.
f--
Other methods may be used which make use of
multiple gland connections and/or stuffing box
connections. Refer to documentation supplied
with the pump, mechanical seal reference
drawing, and piping diagrams.
Packed Stuffing Box Option: Pumps are shipped
without packing, lantern ring or spilt gland installed.
These are included with the box of fittings shipped
with the pump and must be installed before start-up,
Installation of packing:
1.
Carefully clean stuffing box bore.
2. Twist the packing just enough to get it around the
shaft (Fig. 13A,B).
3. Insert packing, staggering the joints in each ring by
90’.
4. The stuffing box arrangement in order of installation
is: 2 packing rings, lantern ring (one piece), then
3 packing rings.
4
5. Install the gland halves and evenly hand tighten the
nuts.
PACKING RINGS
8 0
CORRECT WRONG
Fia. 131
LANTERN RINGS
Fig. 138
LANTERN RING FLUSH CONNECTION
LANTERN RING
SPLIT GLANO
(NON-QUENCH 1
Fig. 14
Connection of Sealing Liquid: If stuffing box
pressure is above atmospheric pressure and
pumpage is clean, normal gland leakage of 40-60
drops per minute is usually sufficient to lubricate and
cool packing and sealing liquid is not required.
NOTE: Otherwise a product flush can be used
if a clean pumpage exists.
An external sealing liquid is required when:
1. Abrasive particles in pumpage could score shaft
sleeve.
2. Stuffing box pressure is below atmospheric pressure
due to pump running with suction lift, ‘or when
suction source is under vacuum. Under these
conditions, packing will not be cooled and
lubricated and air will be drawn into pump.
If an outside source of clean compatible liquid is
required, the pressure should be 15 PSI (1 .O kg/cm2)
above suction pressure. The piping should be
connected to the lantern ring connection.
23