APPROVALS
UNI EN ISO 9001:2000, API 6D, API 6FA, PED, ATEX
ACTIVITY
Founded in 1920 as a mechanical industry, NEGRI FRATELLI was at first
devoted to a completely different kind of production, mainly equipment
for the furniture industry.
The present production of stainless and carbon steel ball valves with
the trademark "NFG" (Negri Fratelli Grignasco) started as early
as 1960.
In the cours of the years, NEGRI FRATELLI has acquired a considerable
experience in the most various fields (chemical and petrochemical industry,
hydraulics, industrial plants) and has then found its specialization particularly
in the gas distribution field and the district heating, with models and
accessories conceived expressly for such applications.
PRODUCTION RANGE
FULLY WELDED BALL VALVES FOR NATURAL GAS AND DISTRICT HEATING in Carbon
steel with ball in stainless steel or all stainless steel.
Fully Welded
Standard Ball Valves
- Ends: Butt Welding, Flanged, Threaded
(GAS/BSP or NPT) and Socket Welding
- Size: DN 10/300 (3/8" to 12") Full Bore - DN 15/400 (1/2"x3/8
to 16"x12") Reduced Bore
- Pressure: ASME 150-300, PN 10-16-25-40
also with
Stem Extension for BW type
Fully
Welded Fire Safe Ball Valves
- Ends: Butt Welding
- Pressure: ASME 150-300-600, PN 10/100
Fully Welded Special
Ball Valves
- Mixed Ends: Threaded/Socket
Welding, Butt
Welding/Flanged
- With Polyethylene
Ends
- With Built-In
Vents
- With Adjustable
Stem Extension
- Insulated
for District Heating
NDUSTRIAL BALL VALVES in carbon and stainless steel:
Enbloc
type
- Ends: GAS/BSP and NPT threaded or with Sliding Flanges
- Size: up to DN 150 (6") Full Bore - up to DN 200 (8"x6")
Reduced Bore
- Pressure: PN 10-16-25-40
Three-Pieces
type
- Ends: GAS/BSP and NPT Tthreaded, Butt Welding, Socket welding, Flanged
- Size: up to DN 200 (8") Full Bore - up to DN 250 (10"x8")
Reduced Bore
- Pressure: ASME 150-300, PN 10-16-25-40
Wafer
type
- Ends: flanges made of thermoplastic material (patented design: all the
parts in contact with the fluid are made of steel)
- Size: up to DN 100 (4") Full Bore
- Pressure: PN 10-16
FOUNDED
in 1960 for valves manufacture
WORKFORCE
20/30
CONTACT
Sales Manager: Mrs Alessandra Negri
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