Lifting Sketches; Intended Use; Description; Type Key - salmson NFCH Installation Et Mise En Service

ENGLISH
3.4.1

LIFTING SKETCHES

Lifting a bareshaft pump :
Lifting a pumpset :
4

INTENDED USE

NFCH pumps are used to handle mineral or synthetic thermal oils at very
high temperature.
The specific design of pump bearing bracket makes it possible to use a
standard mechanical seal and avoids the use of an expensive auxiliary
cooling device.
Those pumps are used in processes with thermal oils at a nominal
pressure of 16bars, in chemical industries, paper or plastics
manufacturing processes, .
5

DESCRIPTION

5.1 TYPE KEY

Pump description is engraved on pump name plate. It gives a
general description of pump design. The nameplate is attached to
pump bearing bracket.
Description of a NFCH pump is created as follows :
Pump description is engraved on pump name plate. It gives a
general description of pump design. The nameplate is attached to
pump bearing bracket.
Description of a NFCH pump is created with following data :
Example : NFCH32-160A-LKJL-32-T0,55/4K-2D-X
NFCH Pump product line
32 Nominal diameter of discharge flange [mm]
160A Nominal diameter of impeller [mm] and hydraulic type
L Material used for casing and casing seal
KJL Mechanical seal type
3 Ball bearing type
2 Elastic coupling model for pump set
T Type of electric power supply
0,55 Installed power P
4 Number of pole
K Motor option
2D ATEX option
X Specificity
[KW]
2
Detailed technical features of the product are described in
acknowledgment of order or upon request to SALMSON Customer
Department.

5.2 TECHNICAL CHARACTERISTICS

5.2.1

MATERIALS

Material
 Casing : cast iron (EN-GJS-400-18-LT)
 Casing cover : cast iron (EN-GJS-400-18-LT)
 Mechanical seal housing : steel (C45E – AISI 1045)
 Shaft : steel (C45E – AISI 1045)
 Impeller : cast iron (EN-GJL250)
 Bearing housing : cast iron (EN-GJL250)
 Bearing : Carbon/Antimony
Sealing
 Casing seal : graphite stainless steel reinforced flat gasket.
 Shaft sealing : single mechanical seal Cr steel/Carbon/Viton.
5.2.2

PERFORMANCE AND OPERATING LIMITS

5.2.2.1 TEMPERATURE
NFCH pumps are designed to handle thermal oil up to 350°C.
Thanks to the bearing bracket design, the fluid temperature in
mechanical seal chamber is limited to 150°C max.
5.2.2.2 PRESSURE
Maximum working pressure is :
 16bar up to 120°C.
 13bar from 120°C to 300°C.
 10bar from 300°C to 350°C.
Intermediate values will be calculated by linear interpolation.
Hydrostatic test pressure : 1.3xPS = 21bar
5.2.2.3 MINIMUM FLOW FOR CON TINUOUS OPERATION
Permitted flow range :
Q is the constant flow corresponding to Best Efficiency Point.
opt
8