Alloy steel F91 (EN 1.4903) valves are made of high-temperature, creep-resistant chromium-molybdenum forged steel containing approximately 9% chromium, 1% molybdenum, and vanadium. They can withstand extreme pressures and temperatures up to 600°C–650°C, making them ideal for high-temperature steam media, such as high-pressure, high-temperature steam piping systems, power plants, and long-haul fossil fuel boilers.

Design Standard of F91 Ball Valve:

Design Acc. to ASME B16.34 (ANSI Standard F91 Ball Valve);

Design Acc. to EN-12516-1/2 (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve).

Test Standard of F91 Ball Valve:

Test Acc. to API 598 (ANSI Standard F91 Ball Valve);

Test Acc. to EN 12266-1/2 (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve).

Surface Finishing of F91 Ball Valve:

All F91 Ball Valve surface is finely machined to achieve the required roughness and conforms to standard MSS SP-110.

Size of F91 Ball Valve:

From DN1/4’’ to 48’’ (ANSI Standard F91 Ball Valve);

From DN8 to DN1200 (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve).

Face to Face of F91 Ball Valve:

Face to Face Acc. to ASME B16.10 (ANSI Standard F91 Ball Valve);

Face to Face Acc. to EN 558-1 (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve).

Pressure Rating of F91 Ball Valve:

ANSI Class 150 F91 Ball Valve (ANSI Standard F91 Ball Valve);

ANSI Class 300 F91 Ball Valve (ANSI Standard F91 Ball Valve);

ANSI Class 600 F91 Ball Valve (ANSI Standard F91 Ball Valve);

ANSI Class 800 F91 Ball Valve (ANSI Standard F91 Ball Valve);

ANSI Class 900 F91 Ball Valve (ANSI Standard F91 Ball Valve);

ANSI Class 1500 F91 Ball Valve (ANSI Standard F91 Ball Valve);

ANSI Class 2500 F91 Ball Valve (ANSI Standard F91 Ball Valve);

EN 1092 PN 16 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 25 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 40 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 63 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 100 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 160 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 250 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 320 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve);

EN 1092 PN 400 F91 Ball Valve (EN Standard F91 Ball Valve, DIN Standard F91 Ball Valve).

Working Temperature of F91 Ball Valve:

Please refer to the "Temperature and Pressure Curve of F91 Ball Valve" for temperature and pressure changes.

Ends Connection of F91 Ball Valve:

ANSI Flange Ends F91 Ball Valve;

ANSI Integral Flange Ends F91 Ball Valve;

ANSI Welded Flange Ends F91 Ball Valve;

Butt Weld (ASME B16.25) Ends F91 Ball Valve;

Butt Weld x ANSI Flange Ends F91 Ball Valve;

EN 1092 Flange Ends F91 Ball Valve;

EN 1092 Integral Flange Ends F91 Ball Valve;

EN 1092 Welded Flange Ends F91 Ball Valve;

Butt Weld (EN 12627) Ends F91 Ball Valve;

Butt Weld (ISO 1127) Ends F91 Ball Valve;

Butt Weld x EN 1092 Flange Ends F91 Ball Valve;

Male NPT (ASME B1.20.1) Ends F91 Ball Valve;

Male BSPP (ISO 228-1) Ends F91 Ball Valve;

Male BSPT (ISO 7-1) Ends F91 Ball Valve;

Male NPT x Female NPT Ends F91 Ball Valve;

Male BSPP x Female BSPP Ends F91 Ball Valve;

Male BSPT x Female BSPT Ends F91 Ball Valve;

Male NPT x Long Butt Weld (+100 mm) Ends F91 Ball Valve;

Male BSPP x Long Butt Weld (+100 mm) Ends F91 Ball Valve;

Male BSPT x Long Butt Weld (+100 mm) Ends F91 Ball Valve;

Female NPT (ASME B1.20.1) Ends F91 Ball Valve;

Female BSPP (ISO 228-1) Ends F91 Ball Valve;

Female BSPT (ISO 7-1) Ends F91 Ball Valve;

Socket Weld (ASME B16.11) Ends F91 Ball Valve;

Socket Weld (EN 12760) Ends F91 Ball Valve;

Female NPT x Socket Weld Ends F91 Ball Valve;

Female BSPP x Socket Weld Ends F91 Ball Valve;

Female BSPT x Socket Weld Ends F91 Ball Valve;

Butt Weld (ASME B16.25) Ends F91 Ball Valve;

Butt Weld (EN 12627) Ends F91 Ball Valve;

Female NPT x Butt Weld Ends F91 Ball Valve;

Female BSPP x Butt Weld Ends F91 Ball Valve;

Female BSPT x Butt Weld Ends F91 Ball Valve;

Female NPT x Long Butt Weld (+100 mm) Ends F91 Ball Valve;

Female BSPP x Long Butt Weld (+100 mm) Ends F91 Ball Valve;

Female BSPT x Long Butt Weld (+100 mm) Ends F91 Ball Valve;

Long Butt Weld (+100 mm Weld Stub) Ends F91 Ball Valve.

CE Marking of F91 Ball Valve:

CE Marking is Available to F91 Ball Valve with a Diameter of DN32 or Larger.

Chemical Composition of F91 Ball Valve:

For the Chemical Composition of F91 Ball Valve, please refer to EN 10204 Type 3.1 certificate.

Mechanical Properties of F91 Ball Valve:

For the Mechanical Properties of F91 Ball Valve, please refer to EN 10204 Type 3.1 certificate.

Certificate of F91 Ball Valve:

All F91 Ball Valve will be delivered with EN 10204 Type 3.1 Certificate.

Approvals of F91 Ball Valve:

MSS SP-110 Certified of F91 Ball Valve;

NACE MR 0175 Certified of F91 Ball Valve

API 607 Fire Safe Certified of F91 Ball Valve;

ISO 9001 Certified of F91 Ball Valve;

PED Certified of F91 Ball Valve.

Available Upon Request of F91 Ball Valve:

NACE MR0175 is available upon request of F91 Ball Valve;

ATEX is available upon request of F91 Ball Valve;

TA-LUFT is available upon request of F91 Ball Valve;

SIL is available upon request of F91 Ball Valve;

Degreasing is available upon request of F91 Ball Valve;

Fire Safe is available upon request of F91 Ball Valve;

Stem Extension is available upon request of F91 Ball Valve;

Double Block and Bleed is available upon request of F91 Ball Valve.