Grease separators

Grease separators serve to separate grease from commercial wastewater.

Regulatory framework

Grease separators are covered by harmonised standard EN 1825-1 and 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'.

Systems not covered by the harmonised standard 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.

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. Approvals for which the period of validity has not yet expired are listed below. They can be used on a voluntary basis to prove fulfilment of the regulatory requirements.

Principles, guidance, recommendations

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

The following approval principles are currently available:

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

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

Stand: Juni 2018

Application forms

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.

Application for a national technical approval and/or construction technique permit (3 pages)

Version: January 2018; Application form

Application for amendment / supplementation / renewal of a national technical approval and/or construction technique permit (4 pages)

Version: January 2018; Application form

Guideline: How to provide drawings for national technical approvals and general construction technique permits (5 pages)

Version: July 2017

  • abZ/aBG
  • Z = new decision | E = supplement | Ä = amendment | V = renewal | G = valid until
    Subject concerned Applicant Decision no. Validity
    from / to
    Fettabscheider aus Edelstahl für bewegliche Spüleinrichtungen Typ WNG-1


    Benzstraße 13

    45891 Gelsenkirchen

    Z-54.6-224 Z: 20.12.2018
    G: 18.12.2023
    Fettabscheider aus Edelstahl für bewegliche Spüleinrichtungen WNG


    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

    36457 Stadtlengsfeld

    Z-54.6-546 Z: 06.12.2018
    G: 06.12.2023
    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

Stefan Hartstock
Head of Section (acting) – Wastewater Treatment Plants

Phone +49 30 78730-280
Email shr(at)dibt(.)de

Legal reference documents