Pump
Types |
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Volute casing
pumps
type NCL (EN 22858),
NCR (API 610)
with Tandem-mechanical seal N9.
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Volute casing
pumps type NCLb
with heating chamber on suction and pressure side, and heated
single mechanical seal N6b. |
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Volute casing
pumps type NML (EN 22858)
with hermetically sealed magnetic coupling.
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Self-priming
centrifugal pumps type HZSM
with side channel vent stage and hermetically sealed magnetic
coupling. |
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Volute casing
pumps - Hot oil design type NKLs
with single mechanical seal, and auxiliary stuffing box N6q. |
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Volute casing
pumps - Hot oil design type NMW
with hermetically sealed magnetic coupling. Centre-line mounted. |
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Single stage submersible pumps
type NCT
Shaft sealing thru gland packing. Design with mechanical seal,
open impeller and heating jacket available. |
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Inline-volute
casing pumps type KMV
with hermetically sealed magnetic coupling. Capacity up to 60
m3/h (300 USgpm), differential head up to 60 ml_C (300 ft). |
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Multistage submersible pumps
type HZV-PTB
with safety equipment for use in hazardous areas, also available
as standard design without PTB-accessories. |
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Volute casing
pumps type KMB
with hermetically sealed magnetic coupling. Capacity up to 60
m3/h (300 USgpm), differential head up to 60 mLC (300 ft). |
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Multistage self-priming side
channel pumps PN 40 type SCM
with hermetically sealed magnetic coupling,
gas-retaining stage and NPSH-impeller for handling liquified gas. |
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Performance
Range - Pump Series
Full
Size
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Materials
- Suitability
Available
materials
Pumps are manufactured of metallic materials only. Based on
the customer requirements, the following materials are available
as standard: (similar USA grades)
Pressurised
parts:
Ductile Iron grade GGG40.3 (ASTM A536 60-40-18),
Carbon Steel grades GS-C25 (ASTM A216-75 WCB), 1.7706 (High temp),
1.1138 (Low temp)
Alloyed Stainless Steel grades 1.4408 (ASTM A351 CF8M), 9.4306
(ASTM A276 304L+Si) 1.4581, 1.4539,
Duplex Stainless Steel 9.4462 (UNS S32550), Hastelloy C (ASTM
A494 CW-12MW)
Internal
parts:
Cast Iron grade GG25 (ASTM A126-73) and Ductile Iron grade GGG40.3
(ASTM A536 60-40-18)
Alloyed Stainless Steel grades 1.4408 (ASTM A351 CF8M), 1.4571,
1.4539
Duplex Stainless Steel 1.4462 / 9.4462 (UNS S32550), Hastelloy
C (ASTM A494 CW-12MW)
Operating
limits:
- Capacities and differential heads according to performance range.
- Temperature PT upto400°C(752°F).
- Operating pressures up to 70 bar.
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Magnetic
Coupling
The principle of a magnetic
coupling is shown in the drawing. The pumped liquid is hermetically
sealed from the atmosphere by the containment shell, that means
no shaft duct to the atmosphere. Power is transmitted to the hermetically
sealed liquid end by the outer drive magnets, passing motive force
through the containmenl shell to the internal drive magnets. The
inner magnet ring transmits the required torque directly to the
impeller.
The magnetic field flux connects the outer and inner magnets.
The coupling works synchronously without slip, the motor speed
is equal to the pump speed.
b = axial magnet length
Dp = rotor diameter
d = shell thickness
s = gap
The inner magnets are sealed from the pumped liquid by a protective
sleeve welded to the rotor. The magnetic couplings can be adjusted
to the required drive power by appropriate selection of rotor
diameter and magnet length. The maximum available nominal coupling
power is currently 160 kW / 2900 l/min. (max. 200 kW / 3500 l/min)
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