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4HLQ Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4HLQ

For the HPK-L pump type series. Single, unbalanced component seal, dynamic design. Used in combination with KSB's 4HL single mechanical seal.
Spare Parts

Main Applications

  • Hot water transport
  • Handling heat transfer fluids

Technical Data

Cartridge seal
Yes
Design
Dynamic
Balancing
Unbalanced mechanical seal
Sealing type
Single
Maximum allowable fluid temperature
100 °C

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Benefits

  • The mechanical seal is used with quench (unpressurised buffer fluid) for pumps handling hot water or thermal oils to prevent dry running or cracking of the thermal oil when in contact with atmospheric oxygen.
  • Combined with KSB's 4HL single mechanical seal this is an optimum sealing solution for demanding fluids.
  • The design facilitates installation with no need for assembly fixtures or adjusting dimension.

Technical Data

Maximum allowable axial movement
0.5 mm
Minimum allowable axial movement
-0.5 mm
Component type series
KSB Etanorm-RSY [A],
KSB HPK-L [B]
Cartridge seal
Yes
Maximum allowable dynamic pressure
16 bar
Design
Dynamic
Balancing
Unbalanced mechanical seal
Sealing type
Single
Mtrl metallic compon.mech.seal
1.4122,
1.4571
Mtrl mech.seal spring
1.4571
Mtrl Secondary seal inboard
FKM
Mtrl Mating ring inboard
A [CARBON, METAL-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
24 bar
Maximum allowable fluid temperature
100 °C
Minimum allowable fluid temperature
-15 °C

Sectional Drawings

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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.

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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.

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