Construction products detail

Grease separators

Grease separators serve to separate grease from commercial wastewater.

Regulatory framework

Grease separators that are covered by harmonised standard EN 1825-1 must bear the CE marking.

Concerning the use of grease separators, please note the provisions of the federal states following MVV TB, Section B 4.2 'Technical requirements for installation, operation and maintenance of systems using construction products for wastewater treatment'.

For grease separators in accordance with EN 1825-1:2004, national technical approvals were granted until October 2016. As a result of the implementation of the judgement of the European Court of Justice of 16 October 2014 in case C-100/13, national technical approvals are no longer granted for these products if they bear the CE marking on the basis of the Construction Products Regulation (Regulation (EU) No 305/2011). The products may not be marked with the national conformity mark (further guidance is linked below (German)).

Grease separators that are not covered by the harmonised standard, such as grease separators for mobile rinsing systems, may fall under the Ordinance on the determination of the suitability of construction products and construction techniques under water law by means of verifications in accordance with the Building Codes of the federal states (WasBauPVO). 

Cf. WasBauPVO, Section 1(1)(c) 'Grease separators'.

DIBt grants national technical approvals (abZ) in combination with general construction technique permits (aBG) for the latter. The abZ/aBG serve to verify the suitability of the systems both from a construction and water legislation point of view.

The following approval principles are currently available:

Requirements for grease separators for mobile rinsing systems (Anforderungen an Fettabscheider für bewegliche Spüleinrichtungen)

The approval principles covering this work area are not published, but are made available to the applicants during the procedure.

pdf-Datei Hinweise zu CE-gekennzeichneten Abscheideranlagen für Fette nach DIN EN 1825-1:2004/AC:2006-05 (2 pages ) Stand: Juni 2018

National procedure

A national technical approval (abZ) and/or oder general construction technique permit (aBG) is granted upon application (see Model Building Code (MBO), Sections 16a(2) and18(2) and (4)). This also applies to amendments and supplements to, or renewals of existing approvals and/or construction technique permits.

No formal requirements apply. The following information is needed: name and address of the applicant, description of the product and/or construction technique and its field of use or application, type of decision required (new decision, amendment or supplement to, or renewal of, an existing decision).

Please feel free to use the template below.


new decision
valid until
Subject concerned Applicant Decision no. Validity
from / to
Fettabscheider aus Edelstahl für bewegliche Spüleinrichtungen WNG WALPOL GmbH Benzstraße 13 45891 Gelsenkirchen Z-54.6-340 Z: 30.08.2021
G: 01.07.2026
Fettabscheider für bewegliche Spüleinrichtungen LipuMobil-P/LipuMobil-S ACO Passavant GmbH Im Gewerbepark 11c 36466 Dermbach Z-54.6-546 Z: 27.11.2023
G: 07.12.2028
Fettabscheider für bewegliche Spüleinrichtungen AQUA-LIPOSTAR mobil TOPATEC Wasser- und Abwassertechnik GmbH Uhlandstraße 10 72654 Neckartenzlingen Z-54.6-547 Z: 27.08.2019
G: 27.08.2024