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4CP Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4CP

For the MegaCPK/CPKN pump type series. Single balanced cartridge seal in stationary design. The large springs are located outside the fluid handled and thus protected from contamination.
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Main Applications

  • Chemical industry
  • Petrochemical industry

Technical Data

Cartridge seal
Yes
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
150 °C

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Benefits

  • Stationary, robust seal design
  • The large springs with high axial mobility are located outside the fluid handled and thus protected from contamination.
  • The mechanical seal cover is centred on the pump cover and confines the gasket.

Technical Data

Maximum allowable axial movement
1.5 mm
Minimum allowable axial movement
-1.5 mm
Component type series
KSB CPKN [A],
KSB MegaCPK [B]
Cartridge seal
Yes
Maximum allowable dynamic pressure
25 bar
Design
Stationary
Balancing
Balanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
X2CRNIMOCUWN25-7-4,
X6CRNIMOTI17-12-2,
X2CRNIMON22-5-3
Mtrl mech.seal spring
X6CRNIMOTI17-12-2,
NIMO16CR16TI
Mtrl Secondary seal inboard
FLUORINATED RUBBER,
ETHYLENE-PROPYLENE-DIENE-RUBBER,
K/M1 [FFKM/FKM, DOUBLE PTFE WRAPPED (FDA)]
Mtrl Mating ring inboard
B [CARBON, RESIN-IMPREGNATED],
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Primary ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
20 m/s
Spring design
Multiple springs
Maximum allowable static pressure
37.5 bar
Maximum allowable fluid temperature
150 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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Documents

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