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4CPD Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4CPD

For the MegaCPK/CPKN pump type series. Double cartridge seal, double pressure balanced, stationary (inboard) and dynamic (outboard) design. The pumping ring of 4CPDF circulates the buffer/barrier fluid effectively.

Main Applications

  • Chemical industry
  • Petrochemical industry

Technical Data

Cartridge seal
Yes
Design
Stationary
Balancing
Cartridge seal
Sealing type
Double
Maximum allowable fluid temperature
200 °C

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Benefits

  • The double cartridge seal can be operated with either unpressurised buffer fluid or pressurised barrier fluid.
  • Assembly fixtures ensure optimum pre-loading of the cartridge seal.
  • 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
Cartridge seal
Sealing type
Double
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 outboard
B [CARBON, RESIN-IMPREGNATED],
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Mating ring inboard
A [CARBON, METAL-IMPREGNATED],
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Primary ring outboard
A [CARBON, METAL-IMPREGNATED],
B [CARBON, RESIN-IMPREGNATED]
Mtrl Primary ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
16 m/s
Spring design
Multiple springs
Maximum allowable static pressure
37.5 bar
Maximum allowable fluid temperature
200 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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