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4HDS Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4HDS

For the HDA/HDB pump type series. Single balanced cartridge seal, dynamic design. The seal is available with a quench connection as standard.
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Main Applications

  • Feed water in power stations
  • Handling condensate in power stations

Technical Data

Cartridge seal
Yes
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
90 °C

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Benefits

  • For all applications of these pumps KSB has a perfectly matching mechanical seal on offer.
  • The 4HDS cartridge seal is available with a quench connection as standard.
  • High temperatures are accommodated by the 4HDSC seal with cooled mating ring. A variant with pumping ring for Plan 23 is also available.

Technical Data

Maximum allowable axial movement
3.5 mm
Minimum allowable axial movement
-3.5 mm
Component type series
KSB HDA [A],
KSB HDB [A]
Cartridge seal
Yes
Maximum allowable dynamic pressure
30 bar
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
X6CRNIMOTI17-12-2
Mtrl mech.seal spring
X6CRNIMOTI17-12-2
Mtrl Secondary seal inboard
FLUORINATED RUBBER,
ETHYLENE-PROPYLENE-DIENE-RUBBER,
PERFLUORO-RUBBER
Mtrl Mating ring inboard
Q1 [SIC, DRUCKLOS GESINTERT],
U2 [TUNGSTEN CARBIDE, NI-BINDER],
Q2 [SIC-C-SI, COMPOSITE]
Mtrl Primary ring inboard
A [CARBON, METAL-IMPREGNATED]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
20 m/s
Spring design
Multiple springs
Maximum allowable static pressure
40 bar
Maximum allowable fluid temperature
90 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

Download

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