1 replacement option found

Existing pump - Circulation

Brand Older Wilo
Product name DL 125/250-11/4
Item no. 2089329
Overall length 620 mm
Mains connection 3x400 V
Pipe Connection DN 125 PN10/16

Replacement pump - Conventional Exchange sheet

Product name DL 125/250-11/4
Item no. 2120984
MEI ≥ 0,4
IE 3
Overall length 620 mm
Mains connection 3x400 V
Pipe Connection DN 125 PN16
Rated Current 22,2 A
Fluid temperature range -20 - +140 °C

Comment

Fits without any modification of piping.

Product information
DL 125/250-11/4

DL 125/250-11/4
Item no. : 2120984

Your advantages
  • Reduced life cycle costs through optimised efficiency
  • Can be used flexibly in air-conditioning and cooling systems, with application benefits due to direct draining of condensate via optimised lantern design (patented)
  • High standard of corrosion protection thanks to cataphoretic coating
  • Main/standby mode or peak-load operation (by means of external auxiliary device)
Construction
Glanded twin-head pump in in-line design with flange connection.

Application
Pumping of heating water (acc. to VDI 2035), cold water and water/glycol mixtures without abrasive substances in heating, cold water and cooling systems.

Scope of delivery
  • Pump
  • Installation and operating instructions
Technical data
  • Permissible temperature range -20 °C to +140 °C
  • Mains connection 3~400 V, 50 Hz (others on request)
  • Protection class IP 55
  • Nominal diameter DN 32 to DN 200
  • Max. operating pressure 16 bar
Materials
  • Pump housing and lantern: Standard: EN-GJL-250
  • Impeller: Standard: EN-GJL-200; special version: Bronze CuSn 10
  • Shaft: 1.4122
  • Mechanical seal: AQEGG; other mechanical seals on request
Description/construction
Single-stage, low-pressure twin-head pump in in-line design with: 
  • Switchover valve
  • Mechanical seal
  • Flange connection with pressure measuring connection R 1/8
  • Lantern
  • Coupling
  • IEC standard motor
Flange gasket DN 125 PN6/10
Item no.: 2529886
Flange gasket DN 125 PN6 / 10, Klingersil:
  • Thickness: 2 mm.
  • Inner diameter: 142 mm.
  • Outer diameter: 195 mm.
Difference pressure sensor 10 m
Item no.: 2136454

The differential pressure sensor kit enables dp-c and dp-v control of the frequency-controlled high-pressure centrifugal pumps.
The sensor measures the differential pressure between the suction ports and discharge ports to the pipes, and converts this into an electrical signal 4-20 mA, which is used by the frequency converter to regulate the pressure of the pump. The value of the output current is proportional to the differential pressure.
Difference pressure sensor 20 m
Item no.: 2136456

The differential pressure sensor kit enables dp-c and dp-v control of the frequency-controlled high-pressure centrifugal pumps.
The sensor measures the differential pressure between the suction ports and discharge ports to the pipes, and converts this into an electrical signal 4-20 mA, which is used by the frequency converter to regulate the pressure of the pump. The value of the output current is proportional to the differential pressure.
Difference pressure sensor 40 m
Item no.: 2136458

The differential pressure sensor kit enables dp-c and dp-v control of the frequency-controlled high-pressure centrifugal pumps.
The sensor measures the differential pressure between the suction ports and discharge ports to the pipes, and converts this into an electrical signal 4-20 mA, which is used by the frequency converter to regulate the pressure of the pump. The value of the output current is proportional to the differential pressure.
Difference pressure sensor 60 m
Item no.: 503184696

The differential pressure sensor kit enables dp-c and dp-v control of the frequency-controlled high-pressure centrifugal pumps.
The sensor measures the differential pressure between the suction ports and discharge ports to the pipes, and converts this into an electrical signal 4-20 mA, which is used by the frequency converter to regulate the pressure of the pump. The value of the output current is proportional to the differential pressure.
Difference pressure sensor 100 m
Item no.: 503184799

The differential pressure sensor kit enables dp-c and dp-v control of the frequency-controlled high-pressure centrifugal pumps.
The sensor measures the differential pressure between the suction ports and discharge ports to the pipes, and converts this into an electrical signal 4-20 mA, which is used by the frequency converter to regulate the pressure of the pump. The value of the output current is proportional to the differential pressure.
Frequency converter EFC-11 kW 3~
Item no.: 2550229