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Quality

Quality

NFG

A history of quality

The history of the quality of Negri Fratelli starts in 1920 in a laboratory that in Grignasco, in via Cesare Battisti, produced screws for barrels and stools, joinery clamps and other related articles.

 

In the period between 1925 and 1947 the laboratory became a mechanical workshop and moved into a new plant.

The turning point in the activity took place in the years ’60s with the start of the production, at first of valve components as subcontractor, then of complete stainless and carbon steel ball valves with NFG trademark (Negri Fratelli Grignasco), in three pieces and enbloc models.

The years ’70s see the production of fully welded ball valves, initially designed for district heating, later also and above all for the natural gas distribution networks, and the years ’90s that of wafer ball valves in carbon steel and stainless steel, with flange in thermoplastic material.

STARTING FROM 1982 THE COMPANY OBTAINS COUNTLESS PATENTS AND CERTIFICATIONS

Achievement of the approval for the enbloc ball valves for natural gas service, issued by SSIGE – Société Suisse de l’Industrie du Gaz et des Eaux.

Application for the grant of a design patent, relevant to “Ball valves with auto-alignment” (axial centering plate for 2/3 pieces ball valve).

Grant of a design patent, related to “Ball valves with double joint for low pressure gas”.

Achievement of the Certification of Conformity to the standard DIN 3547-1, issued by the German body DVGW, Deutscher Verein des Gas- und Wasserfaches e.V., as for fully welded ball valves for natural gas distribution.

Achievement of the Approval as for the fully welded ball valves for natural gas distribution, issued by KGSC – Korean Gas Safety Corporation.

Grant of a design patent, related to “Valvola a sfera con struttura piatta discoidale, in materiale sintetico, con nucleo metallico incorporato”, in other words, Wafer ball valves, in carbon and stainless steel, with thermoplastic flange.

Achievement of the Approval for the production of fully welded ball valves for natural gas service, issued by ISPESL Istituto Superiore per la Prevenzione e la Sicurezza del Lavoro (Superior Body for the Prevention and Safety of the Working Environment).

Achievement of the Certification of Conformity of the Quality management system to the standard UNI EN ISO 9002:1994, issued by DNV – Det Norske Veritas.

Achievement of the Certification of Conformity of NFG ball valves to the European Directive 97/23/CE (PED), issued by DNV – Modulo Uno.

Achievement of the Certification of Conformity of the Quality management system to the standard UNI EN ISO 9001:2000, issued by DNV – Det Norske Veritas.

Achievement of the Firesafe Certificates of Conformity to the standards API 6FA, ISO/FDIS 10497 and API 607, issued by Bureau Veritas, for NFG floating ball valves.

Achievement of the Certification of Conformity of NFG ball valves to the standard API 6D, issued by API – American Petroleum Institute.

Achievement of the Certificate of maintenance of the technical documentation relevant to NFG ball valves, in conformity to the European Directive 94/9/CE (ATEX), issued by DNV – Modulo Uno.

Achievement of the Firesafe Certification of Conformity to the standards ISO/FDIS 10497 and API 607, issued by Lloyd’s Register, as for trunnion mounted ball valves.

Achievement of the Certification of Conformity to the standard UNI/DIN EN 13774 issued by DVGW – Deutscher Verein des Gas- und Wasserfaches.

THE STORY CONTINUES

Quality system certificate

ISO 9001

Negri Fratelli’s quality system has been certified by DNV – GL as being compliant to the ISO 9001:2015 standard

Product approvals and certificates

PED

NFG products’ compliance to the European Directive 2014/68/EU (Pressure Equipment Directive or PED) has been certified by DNV – GL.

ATEX

NFG ball valves’ compliance to the European Directive 2014/34/EU (ATEX) has been certified by DNV – GL Presafe.

API 6D

NFG ball valves’ compliance to the API 6D Standard has been certified by API – American Petroleum Institute.

EN 13774

NFG ball valves’ compliance to the UNI/DIN EN 13774 Standard has been certified by DVGW -Deutscher Verein des Gas und Wasserfaches.

FIRESAFE

NFG ball valves in the firesafe design have been tested according to the provisions contained in the API 6FA, ISO/FDIS 10497 and API 607 standards and have been certified by DNV-GL, Bureau Veritas and Lloyd’s Register.

OTHER PRODUCT CERTIFICATES

NFG ball valves have been certified and/or approved by several end-users and by national as well as international bodies.

OPERATING QUALIFICATIONS AND CERTIFICATES

WELDING

All welders and welding procedures used for the assembly of NFG fully welded ball valves have been qualified and certified by the Italian Welding Institute.

PND

All NFG inspectors for non-destructive testing have been certified by CICPND (“Italian Certification Centre for Non-Destructive Testing and Industrial Processes”) for the execution of VT (Visual Testing), UT (Ultrasonic Testing), MT (Magnetic Particle Testing), PT (Penetrant Testing).
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