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4HGS Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4HGS

For the HG pump type series. Single balanced cartridge seal, dynamic design. The seal is available with a quench connection as standard.
Spare Parts
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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
100 °C

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Benefits

  • For all applications of these pumps KSB has a perfectly matching mechanical seal on offer.
  • The 4HGS cartridge seal is available with a quench connection as standard.
  • High temperatures are accommodated by the 4HGSC 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 HG [A]
Cartridge seal
Yes
Maximum allowable dynamic pressure
40 bar
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
1.4571
Mtrl mech.seal spring
1.4571
Mtrl Secondary seal inboard
FKM,
EPDM,
FFKM
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
23 m/s
Spring design
Multiple springs
Maximum allowable static pressure
50 bar
Maximum allowable fluid temperature
100 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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