4RPQ Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4RPQ

For the RPH pump type series. Single balanced cartridge seal in stationary design.
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Main Applications

  • Non-API 682 applications in the chemical and petrochemical industries

Technical Data

Cartridge seal
Yes
Design Mechanical seal
Stationary
Mechanical seal type
Balanced mechanical seal
Sealing type Mechanical seal
Single
Max allowed fluid temp TSG
150 °C

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Benefits

  • The materials and design ensure a long service life. The mechanical seal features a quench connection for flushing out leakage on the atmospheric side.
  • Easy installation; the assembly fixtures provide optimal spring pre-loading and pre-centring for transport and installation.
  • A floating throttling ring provides additional safety.

Technical Data

Max allowable axial movem TSG
1 mm
Min allowable axial movem TSG
-1 mm
Component type series
KSB RPH [B]
Cartridge seal
Yes
Max allow.dynamic pressure TSG
40 bar
Design Mechanical seal
Stationary
Mechanical seal type
Balanced mechanical seal
Sealing type Mechanical seal
Single
Mtrl metallic compon.mech.seal
1.4571
Mtrl mech.seal spring
2.4610
Mtrl Secondary seal inboard
EPDM
Mtrl Mating ring inboard
B [CARBON, RESIN-IMPREGNATED]
Mtrl Primary ring inboard
Q1 [SIC, DRUCKLOS GESINTERT]
Dir of rotation Mech seal
Bi-directional
Max allow.sliding speed TSG
20 m/s
Spring design Mechanical seal
Multiple springs
Max allow.static pressure TSG
60 bar
Max allowed fluid temp TSG
150 °C
Min allowed fluid temp TSG
-40 °C

Sectional Drawings

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