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

Environmentally friendly features

Efficient pump hydraulics and use of IE3 motors for considerable energy savings
Efficient design of cast iron components for lowest possible weight
Sustainable and carbon-neutral production and processes in our European factories

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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