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.

Main Applications

Non-API 682 applications in the chemical and petrochemical industries

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

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

Maximum allowable axial movement: 1 mm
Minimum allowable axial movement: -1 mm
Component type series: KSB RPH [B]
Cartridge seal: Yes
Maximum allowable dynamic pressure: 40 bar
Design: Stationary
Balancing: Balanced mechanical seal
Sealing type: Single
Mtrl metallic compon.mech.seal: X6CRNIMOTI17-12-2
Mtrl mech.seal spring: NIMO16CR16TI
Mtrl Secondary seal inboard: ETHYLENE-PROPYLENE-DIENE-RUBBER
Mtrl Mating ring inboard: B [CARBON, RESIN-IMPREGNATED]
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: 60 bar
Maximum allowable fluid temperature: 150 °C
Minimum allowable fluid temperature: -40 °C

Sectional Drawings

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