Mixed Flow, Volute Casing Pump0 pages

PUMPING TECHNOLOGY SPL
133.26201.53.03E 07/05
Mixed Flow, Volute Casing Pump
SPL 20024...40056
TECHNICAL DATA
Output: up to 3500 m3/h
Delivery head: up to 33 m
Speed: up to 1800 rpm
depending of the pump size
Medium temperature: max. 110 °C
Casing pressure: max. 6 bar
Shaft sealing: stuffing box or mechanical seal
Flange connections: ISO DIN 2501, PN 10
Sense of rotation: clockwise, when seen from the
drive on the pump
APPLICATION
Series SPL volute-casing pumps can be used where the
requirement is for pumping clean, turbid or slightly
contaminated liquids. Occasional solid contaminations can be
handled without affecting the pump due to the large internal
cross sections.
The SPL pumps are suitable for the following applications
pumping raw water in waterworks
as rainwater pumps in sewage works
for irrigation and drainage
as seawater pumps in desalination plants
as coolant pumps in power stations and steelworks
for pumping low-concentration cellulose suspensions
DESIGN
The SPL is a horizontal, single stage, end suction pump flanged
to a bearing pedestal. The volute casing has integral support
feet and is fitted with a replaceable wear ring. Wearing parts
can be removed from the drive end without disturbing the volute
casing and pipework. An open impeller (designation A-I) is fitted
as standard but a closed impeller (designation K-S) for pumping
liquids containing abrasive solids can be fitted if required.
CONSTRUCTION
Casing pressure: between -10 ºC and +110 ºC
Pump size, SPL• Maximum pump
pressure [bar]
(0B, 0C, 3B)
Maximum pump
pressure [bar]
(4B)
20024, 25024 2,5 4,0
25028,30028,
40040
3,0 4,5
20028,35040,
40050 40056 3,5 5,5
25032,30032,
30036
35036
4,0 6,0
Note: Casing pressure = Inlet pressure + head at closed valve.
Branch positions:
Suction branch axial, discharge branch tangentially upwards.
Flanges:
Connection dimensions of flanges DIN 2532 PN 10.
Bearings:
Execution B:
Pump end--ball bearing to DIN 625 or cylindrical roller bearing
to DIN 5412.
Drive end--ball bearing to DIN 625 or two angular contact ball
bearings in an X arrangement to DIN 628.
Bearings are oil lubricated.
Shaft sealing:
A stuffing box or a mechanical seal, as required, can affect
the sealing of the shaft.
Variants with stuffing box:
Designation 041: Self-sealing, uncooled stuffing box
Temperature range: -10 ºC to 110ºC.
Designation 052: Uncooled stuffing box with external sealing
and flushing liquid
Temperature range: -10ºC to 110ºC.
Variants with mechanical seal:
The installation with mechanical seal to DIN 24960 is possible
in all versions described there, as a single mechanical seal.
Temperature range: -10 ºC to 110ºC
Designation AA1 Unbalanced single mechanical seal,
Materials: 1.4401-carbon-Viton.
Designation BK3: Unbalanced single mechanical seal,
Materials: Carbon-SiC- EPDM
Designation BKS: Unbalanced mechanical seal
Materials: SiC-SiC-Viton.
Designation AF3: Balanced single mechanical seal,
Materials: Carbon-SiC- EPDM
Designation AFS: Balanced single mechanical seal,
Materials: SiC-SiC-Viton.
Double mechanical seals can be mounted on request