4ESD Pump-specific cartridge mechanical seal

Pump-specific cartridge mechanical seal 4ESD

For the Etanorm-R pump type series. Double, balanced cartridge seal, stationary (inboard) and dynamic (outboard) design.

Main Applications

Drinking water
Service water
Hot water

Technical Data

Cartridge seal: Yes
Design: Stationary
Balancing: Balanced mechanical seal
Sealing type: Double
Maximum allowable fluid temperature: 140 °C

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Benefits

Inboard seal in stationary design, outboard seal in dynamic design. The double mechanical seal's cartridge can be operated with either unpressurised buffer fluid or pressurised barrier fluid.
The springs are located outside the fluid handled.
G 1/4" barrier fluid inlet, outlet and drain connections

Technical Data

Maximum allowable axial movement: 1.5 mm
Minimum allowable axial movement: -1.5 mm
Component type series: KSB Etanorm-R [B]
Cartridge seal: Yes
Maximum allowable dynamic pressure: 25 bar
Design: Stationary
Balancing: Balanced mechanical seal
Sealing type: Double
Mtrl metallic compon.mech.seal: 1.4571
Mtrl mech.seal spring: 1.4571
Mtrl Secondary seal outboard: FKM,
EPDM,
K/M1 [FFKM/FKM, DOUBLE PTFE WRAPPED (FDA)]
Mtrl Secondary seal inboard: FKM,
EPDM,
K/M1 [FFKM/FKM, DOUBLE PTFE WRAPPED (FDA)]
Mtrl Mating ring outboard: B [CARBON, RESIN-IMPREGNATED]
Mtrl Mating ring inboard: Q1 [SIC, DRUCKLOS GESINTERT]
Mtrl Primary ring outboard: 1.4122
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: 37.5 bar
Maximum allowable fluid temperature: 140 °C
Minimum allowable fluid temperature: -40 °C

Sectional Drawings

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