Centrifugal Pump DIN

Shaft Sealing                                                       

Shaft sealing (Stuffing box and single mechanical seal)

Code 041: Self-sealed, uncooled packing rings

Code 052: Uncooled packing rings, external sealing liquid

Code B27: Unbalanced bellows mechanical seal, seal face materials WC/Carbon, elastomer EPDM

Code AF3: Balanced mechanical seal, seal face materials SiC/Carbon, elastomer EPDM

Code BJ3: Unbalanced bellows mechanical seal, seal face materials SiC/Carbon, elastomer EPDM

Code C23: Unbalanced bellows mechanical seal, seal face materials SiC/Carbon, elastomer EPDM

Code AFS: Balanced mechanical seal, seal face materials SiC/ SiC, elastomer FPM (Viton)

Code BJS: Unbalanced bellows mechanical seal, seal face materials SiC/ SiC, elastomer FPM (Viton)

Code C2S: Unbalanced bellows mechanical seal, seal face materials SiC/ SiC, elastomer FPM (Viton)

Code AFK: Balanced mechanical seal, seal face materials SiC/carbon, elastomer FPM (Viton) double PTFE (Teflon) wrapped

Code BJJ: Unbalanced bellows mechanical seal, seal face materials SiC/Carbon, elastomer FPM (Viton)

Code C2J: Unbalanced bellows mechanical seal, seal face materials SiC/Carbon, elastomer FPM (Viton)

Codes AX3, AXS, AXK: are equivalent to AF3, AFS, AFK plus quench

Codes AY3, AYS, AYK: are equivalent to AF3, AFS, AFK plus heating

Codes A93, A9S, A9K: are equivalent to AF3, AFS, AFK plus external flushing

As an option,Code 051 (as 052, but with inlet and outlet) and other sealing execution can be supplied on request. *)

Water quality according to VdTÜV 1466; additional requirement:O2 (oxygene) less than 0,02 mg/l.

¹⁾ From 200250 to 300-500

²⁾ 150-500

³⁾ 200-250

⁴⁾ From 80-400 to 300-500 except 150-500

Shaft sealing (double mechanical seal):

Code M1S: Double mechanical seal in tandem arrangement, seal face materials SiC / SiC, elastomer FPM (Viton). Type GNZ.

Code N1S: Double mechanical seal in tandem arrangement, seal face materials SiC / SiC, elastomer FPM (Viton). Type M7N.

Code NFS: Double mechanical seal in back to back arrangement, seal face materials SiC / SiC, elastomer FPM (Viton). Type M7N.

Flanges                                                       

Flanges:

Material design 4B: Complies with DIN 2543 PN 16 Material design 0B, 0C, 0E, 1B: DIN 2533 PN 16 / 2532 PN 103) Flanges drilled according to ANSI 150 can be supplied.

Bearings:

Bearing brackets 25, 35 and 45: Two ball bearings, lifetime greased (2Z), design code B, or oil lubrication, design code C. Bearing brackets 55 and 65: One double row angular contact bearing on pump side, plus one ball bearing on drive side, grease lubricated S or oil lubricated T.

Applications                                                       

Volute casing pumps of the ZLN range (meeting DIN 24255 / EN 733 and ISO 9908) are used when clear or turbid liquids free from solid particles are to be pumped. Application areas for pumps in this range include:

Automobile, mechanical and general engineering industries

Food and beverage industry

Pharmaceutical industry

Paint industry

Plastic and rubber industry

Iron and non-ferrous metal industry

Paper and pulp industry

Textile industry

Building and construction industry

Heating and air conditioning

Drainage

Water supply

Irrigation

A range of materials is available to meet the specific needs of customers. For applications not covered by this pump range we offer the ISOchem range.

Design and Construction                                                       

DESIGN

Horizontal, single-stage volute casing pumps with connections and main dimensions to DIN 24255 / EN 733, plus 19 additional sizes. The design of the pump allows the complete drive unit to be withdrawn from the casing without disturbing the attached pipe work. If a spacer type coupling is used, it is also unnecessary to disconnect the motor.

The range covers 50 sizes with only 5 different bearing brackets.

CONSTRUCTION

Casing pressure:

Material 4B: max 16 bar from - 40 °C to +120 °C max 14 bar from 120ºC up to +170 °C

Material 0B, 0C, 0E, 1B: max 16/101)/142) bar from - 20 °C to +120 °C max 14/94)/82) bar from 120 ºC up to +170 °C

Max casing pressure= inlet pressure + delivery head at zero flow

Please note: The relevant technical regulations and safety rules must be observed.

Flanges location: Axial suction flange, discharge flange radially upwards.

Features and Benefits                                                       

En Standards                                                       

General comments:

For horizontal volute pumps in CLOSE COUPLED construction with STANDARD motor for nominal performances and flange connections as per EN 733 refer to our series ZLK.

For INLINE pumps with the same drive unit, consisting of bearing bracket with bearing, stub shaft and mechanical seal, casing cover, impeller and impeller nut, refer to our series ZLI (supplied also with magnetic drive).

For equipping hot media systems a complete programme is available for a flow range between 1-1000 m³/h consisting of the range:

ZTN volute pumps to EN 733 design with base plate, t^max 350 °C PN 16. Heat transfer oil.

ZTK volute pumps to EN 733 close coupled design, t^max 350 °C PN 16. Heat transfer oil.

ZTI volute pumps to EN 733 as INLINE construction, t^max 3500 C PN 16. Heat transfer oil.

ZEN volute pumps to EN 22858, t^max 230 °C PN 40. Hot water design.

ZDN volute pumps to EN 22858, t^max 185 °C PN 25. Hot water design.

ZHN volute pumps to EN 733, t^max 180 °C PN 16. Hot water design.

ZLI volute pumps to EN 733 as INLINE construction, t^max 150 °C PN 25. Hot water design.