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4KDC Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4KDC

For the KWP pump type series. Double cartridge seal in double balanced, stationary design.
Spare Parts
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Main Applications

  • Waste water containing stringy material and abrasive particles

Technical Data

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

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Benefits

  • This double cartridge seal includes the shaft protecting sleeve for the pump and can be fitted without adjusting dimension.
  • The pumping ring circulates the buffer/barrier fluid effectively. The circulation ensures optimum heat dissipation in the space between the two seals and thus increases the service life.
  • The double mechanical seal's cartridge can be operated with either unpressurised buffer fluid or pressurised barrier fluid. In the event of a sudden barrier fluid pressure failure, the double pressure balanced design ensures that 4KDC's seal faces will not open.

Technical Data

Maximum allowable axial movement
1.5 mm
Minimum allowable axial movement
-1.5 mm
Component type series
KSB KWP-NC [A]
Cartridge seal
Yes
Maximum allowable dynamic pressure
16 bar
Design
Stationary
Balancing
Balanced double mechanical sea
Sealing type
Double
Mtrl metallic compon.mech.seal
1.4571,
1.4539,
1.4462
Mtrl mech.seal spring
1.4571
Mtrl Secondary seal outboard
FKM,
EPDM,
FFKM
Mtrl Secondary seal inboard
FKM,
EPDM,
FFKM
Mtrl Mating ring outboard
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Mating ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Primary ring outboard
B [CARBON, RESIN-IMPREGNATED]
Mtrl Primary ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Direction of rotation
Clockwise rotation
Maximum allowable sliding velocity
20 m/s
Spring design
Multiple springs
Maximum allowable static pressure
24 bar
Maximum allowable fluid temperature
200 °C
Minimum allowable fluid temperature
-40 °C

Sectional Drawings

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