Reduction of space required and installation costs due to twin-head pump design
Main/standby mode or peak-load operation (by means of external auxiliary device)
High standard of corrosion protection thanks to cataphoretic coating
Series design: motor with one-piece shaft
Version N: standard motor B5 or V1 with stainless steel plug shaft

Design

Glanded twin-head pump in in-line design with flange connection

Application

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

Typekey

Example	DPL 40/160‐4/2
DPL	In-line twin-head pump
40	Nominal diameter DN of the pipe connection
160	Nominal impeller diameter
4	Nominal motor power P2 in kW
2	Number of poles

Technical data

Permissible temperature range -20 °C to +120 °C
Mains connection 3~400 V, 50 Hz (others on request)
Protection class IP 55
Nominal diameter DN 32 to DN 100
Max. operating pressure 10 bar (special version: 16 bar)

Materials

Pump housing and lantern: EN-GJL-250
Impeller: PP fibreglass-reinforced /EN-GJL-200 (depending on pump type)
Shaft: 1.4021
Mechanical seal: AQ1EGG; other mechanical seals on request

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
Motor with one-piece shaft

Scope of delivery

Pump
Installation and operating instructions

Options

...-H5 variant with PN16 housing (at additional charge)
Other voltages and frequencies as well as ATEX approval on request

Accessories

Mounting brackets for installation on a base
PTC thermistor sensor, PTC resistor tripping relay
Special motors
Special mechanical seals
SC-HVAC, CC-HVAC control systems and switchgears
Blind flanges

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