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HDRP Centrifugal Pumps for Low Flow and High Differential Pressures - Acc. API 610 Standard0 pages
DESCRIPTION:
End suction, centrifugal pump type, with specially designed impellers and volute,
allowing the pumps to operate continuously with small capacities against high
heads, which is not possible with conventional centrifugal pumps unless
controlled recirculation is used (API-610, LAST EDITION).
GENERAL DATA:
• Capacity: 0,25 to 25 m3/h.
• Heads: up to 300 m
• Maximum working pressure:
up to 51 bar
• Maximum working
temperature: up to 400 ºC
• Minimum working
temperature:
up to - 100 ºC
CONSTRUCTION CHARACTERISTICS:
The HDRP pumps are horizontal, end suction,
centrifugal pumps with radially split housings. These
pumps are of single stage design with a conventional
overhung impeller. Basic construction includes a
jacketed back-plate and optional
cooling/heating of the bearing frame’s sump.
The pumps have a totally “open” radial impeller,
designed to reduce axial loads to a minimum,
independent of the suction pressure to which the
pump is submitted.
The HDRP pumps do not use wear rings.
Due to the high axial clearances, there is no risk
of seizure whilst operating within
the allowable operational temperature ranges.
Nine (9) pump sizes are covered by two (2) bearing
frame sizes, giving the pumps maximum parts
interchangeability. Pumps maintain the “back-pull-out”
design for ease of maintenance. Shafts are of the
“wet” design and the sealing cavity is large enough to
accommodate just about any type of mechanical seal.
Roller bearings support the shaft on the pump side and
back-to-back mounted ball bearings on the motor side.
An option for a third bearing mounted on the motor side
is available for very high suction pressures.
CONSTRUCTION MATERIALS:
The HDRP range of pumps are available in all materials specified under the API 610 (Last Edition) as well as
special materials upon request.
WORKING LIMITS:
FLANGES
ANSI 300 PSI/
600 PSI
OUTLET
MAT. CLASS
S-1, S-2, S-3, S-4,
S-5, S-6, S-9
MATERIAL
CLASS
C-6
MATERIAL
CLASS
A-7, A-8
MAT.
CL
I-1, I-2
TYPE
Max.
Max.
Max.
Max.
Max.
Max.
Max.
Max.
Max.
Working
PUMP
INLET
MATERIAL
CLASS
I-1, I-2
Testing
Working
Testing
Working
Testing
Working
Testing
Suction
Pressure Pressure Pressure
Pressure
MAT.
CL
Steels
MAT.
CL
I-1, I-2
Max.
Max.
Suction Working
Pressure Pressure Pressure Pressure Pressure Pressure
ANSI
HDRP
ANSI
BAR
BAR
BAR
BAR
BAR
BAR
BAR
BAR
BAR
BAR
2”
1”
21
31,5
51
76,5
51
76,5
42,5
64
15
30
Temp.
o
C
180
MAT.
CL
Steels
Max.
Working
Temp.
o
C
400
"
