Shopping Cart
4RDQ Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4RDQ

For the RDLO pump type series. Double, balanced cartridge seal, dynamic design. Especially designed for applications with negative suction pressure.
Spare Parts
See all documents and downloads

Main Applications

  • Raw water
  • Pure water
  • Service water

Technical Data

Cartridge seal
Yes
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Double
Maximum allowable fluid temperature
130 °C

Your KSB contact: We’re here to support you

Do you need any assistance finding the right material number?
We’ll soon provide a list so you can directly place your purchase order.
Meanwhile please contact our support:

CONTACTUSKSBINDIA@ksb.com
Your KSB contact : We’re here to support you

Benefits

  • Double cartridge seal especially designed for applications with negative suction pressure
  • The primary ring is shrink-fitted into the metal primary ring carrier. This ensures even and stable contact.

Technical Data

Maximum allowable axial movement
2.5 mm
Minimum allowable axial movement
-2.5 mm
Component type series
KSB RDLO [A]
Cartridge seal
Yes
Maximum allowable dynamic pressure
16 bar
Design
Dynamic
Balancing
Balanced mechanical seal
Sealing type
Double
Mtrl metallic compon.mech.seal
1.4571
Mtrl mech.seal spring
2.4610
Mtrl Secondary seal outboard
FKM,
EPDM
Mtrl Secondary seal inboard
FKM,
EPDM
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
B [CARBON, RESIN-IMPREGNATED],
Q1 [SIC, DRUCKLOS GESINTERT]
Direction of rotation
Bi-directional
Maximum allowable sliding velocity
10 m/s
Spring design
Multiple springs
Maximum allowable static pressure
24 bar
Maximum allowable fluid temperature
130 °C
Minimum allowable fluid temperature
-15 °C

Sectional Drawings

Download

KSB - one of the world's leading manufacturers of industrial valves and pumps

Founded in 1871 in Frankenthal (Germany), KSB has been one of the leading suppliers of pumps and industrial valves for over 150 years. With more than 16.000 employees worldwide and its own sales and marketing, manufacturing facilities and service operations, KSB develops and produces custom-fit pumps for various applications.

As an experienced pump manufacturer, its product portfolio includes building and industrial technology, water transport, wastewater treatment and power plant processes. Thanks to innovative research and development, KSB can meet the most diverse requirements of customers. Benefit from many years of experience and technical expertise as a renowned pump manufacturer.

KSB pump manufacturers: the best solution for your plant
Industrial pumps and valves from KSB cover a wide range of applications and are highly energy-efficient. Products convince with the most innovative technology as well as with systems that have been tried and tested for many years - including the Etanorm water pump. Achieving more than 1.5 million sales worldwide, Etanorm is the most successful standard water pump. With KSB spare parts and services.

KSB ensures the operational reliability of its industrial pumps and valves. The KSB success formula for high-performance pumps lies in the technological strength in hydraulics, materials and automation.

Competent service right from the start
The numerous production facilities ensure that KSB as a pump manufacturer can guarantee customer proximity and first-class service. The experienced specialists are certified to ensure excellent quality and extensive experience. KSB Service takes care of the commissioning, inspection, servicing and maintenance of your pumps, valves and complete systems directly on site.  KSB also provide you with spare parts quickly. This means you get the best service directly from your pump manufacturer.

;