Flowserve VTP Wet Pit - Manual (Page 19)

VERTICAL TURBINE PUMPS (VTPS) CENTRIFUGAL PUMPS ENGLISH 71569224 – 10-13
Page 19 of 76 flowserve.com
d) Bolt on strainer
Impellers 3.3.6
VTP’s are supplied with enclosed, or semi open
impeller types. Impellers are low, medium and high
capacity type designed for maximum coverage of all
VTP applications. Impellers are cast and machined
to match each order and to provide required surface
finish to achieve hydraulic characteristics. Impellers
are dynamically balanced and held in position on the
shaft by a tapered lock collet or split ring and key.
Stuffing box 3.3.7
Some VTPs are fitted with stuffing boxes. In such
cases, stuffing boxes are normally adequate for
working pressures up to 20.7 bar (300 psi). Refer to
stuffing box User Instructions for specifications.
Low pressure stuffing box 3.3.7.1
This type of packing box is fitted on to an open
lineshaft for pressures less than 6.5 bar (100 psi) and
used only on W-type discharge heads (see Section
3.2.2.1 to see for W type discharge head detail).
High pressure stuffing box 3.3.7.2
This type of packing box is fitted on to an open lineshaft for pressures up to 20 bar (300 psi) uses six rings of
packing with two lantern rings and allows grease lubrication.
(17) PACKING GLAND
(354) STUD
(355) HEX NUT
(13) PACKING SET
PRESSURE
REDUCING
BUSHING (117)
STUFFING BOX (83)
O-RING (347)
HEX NUT (327A)
STUD (326A)
SLINGER (346)