ASTM A182 F44, commonly known as 254SMO, is a high-molybdenum super austenitic stainless steel. The core advantages of ASTM A182 F44 are: extreme resistance to chloride corrosion and high strength, specifically designed for high-chlorine environments.

1. Core Advantages of Freeman Valve's ASTM A182 F44 Valves in Resisting Chloride Ion Corrosion

1.1 The core advantage of Freeman Valve's ASTM A182 F44 valves is their extreme corrosion resistance, mainly manifested in:

① High resistance to pitting and crevice corrosion (PREN≈42–44, far exceeding 24 for 316L and 36 for 904L), making them the preferred valve for high-chlorine environments such as seawater and brine;

② Excellent resistance to stress corrosion cracking (SCC), with SCC resistance far superior to ordinary austenitic and duplex steels in chlorine-containing and high-temperature water environments;

③ Strong acid and alkali resistance, resistant to sulfuric acid, phosphoric acid, acetic acid, formic acid, and alkaline solutions, with a wide applicable pH range.

1.2. Freeman Valve's ASTM A182 F44 valves possess excellent mechanical properties.

With a yield strength ≥300MPa and tensile strength ≥650MPa, these valves enable lightweight design.

2. Precautions for using ASTM A182 F44 valves

2.1 When the temperature is below -50℃, the toughness decreases, so these valves are not suitable for extremely cold and uninsulated conditions.

2.2 When the temperature is above 400℃, the strength decreases significantly, so prolonged use at excessively high temperatures should be avoided.

3. Key application areas for Freeman Valve's ASTM A182 F44 valves

3.1 The primary application scenario for Freeman Valve's ASTM A182 F44 valves is in the marine and seawater sectors. Examples include: seawater desalination (concentrated brine pipelines, etc.), ships and offshore platforms (ballast water systems, fire-fighting pipelines, subsea pipelines, wellheads, etc.), and coastal power plants (seawater cooling systems, condensers, circulating water pipelines, etc.).

3.2 Freeman Valve's ASTM A182 F44 valves are widely used in the chemical and pharmaceutical industries. Examples include: (chlor-alkali industry: brine refining, electrolytic cell accessories, chlorine treatment pipelines), pulp bleaching (chlorine dioxide, sodium hypochlorite media equipment, scrubbing towers), and fine chemicals (chlorine-containing intermediate reaction vessels, distillation towers).

3.3 Freeman Valve's ASTM A182 F44 valves are widely used in the oil and gas and energy industries. Examples include: oil and gas extraction (wellhead equipment for high-chlorine, high-salinity formation water, throttle valves, and gathering pipelines).

3.4 Freeman Valve's ASTM A182 F44 valves have been widely used in brine and salt water media (evaporators and crystallizers in salt lake chemical plants and salt production equipment) and high-temperature, high-chlorine water media (closed-loop circulating water in thermal power plants, hot springs, heat exchangers in geothermal equipment, etc.).

Design Standard of F44 Needle Valve (UNS S31254 Needle Valve):

Design Acc. to ASME B16.34 (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

Design Acc. to EN-12516-1/2 (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve)).

Test Standard of F44 Needle Valve (UNS S31254 Needle Valve):

Test Acc. to API 598 (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

Test Acc. to EN 12266-1/2 (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve)).

Surface Finishing of F44 Needle Valve (UNS S31254 Needle Valve):

All F44 Needle Valve (UNS S31254 Needle Valve) surface is finely machined to achieve the required roughness and conforms to standard MSS SP-110.

Size of F44 Needle Valve (UNS S31254 Needle Valve):

From DN1/4’’ to 48’’ (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

From DN8 to DN1200 (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve)).

Face to Face of F44 Needle Valve (UNS S31254 Needle Valve):

Face to Face Acc. to ASME B16.10 (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

Face to Face Acc. to EN 558-1 (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve)).

Pressure Rating of F44 Needle Valve (UNS S31254 Needle Valve):

ANSI Class 150 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

ANSI Class 300 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

ANSI Class 600 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

ANSI Class 800 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

ANSI Class 900 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

ANSI Class 1500 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

ANSI Class 2500 F44 Needle Valve (UNS S31254 Needle Valve) (ANSI Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 16 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 25 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 40 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 63 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 100 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 160 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 250 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 320 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve));

EN 1092 PN 400 F44 Needle Valve (UNS S31254 Needle Valve) (EN Standard F44 Needle Valve (UNS S31254 Needle Valve), DIN Standard F44 Needle Valve (UNS S31254 Needle Valve)).

Working Temperature of F44 Needle Valve (UNS S31254 Needle Valve):

Please refer to the "Temperature and Pressure Curve of F44 Needle Valve (UNS S31254 Needle Valve)" for temperature and pressure changes.

Ends Connection of F44 Needle Valve (UNS S31254 Needle Valve):

ANSI Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

ANSI Integral Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

ANSI Welded Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld (ASME B16.25) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld x ANSI Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

EN 1092 Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

EN 1092 Integral Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

EN 1092 Welded Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld (EN 12627) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld (ISO 1127) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld x EN 1092 Flange Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male NPT (ASME B1.20.1) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male BSPP (ISO 228-1) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male BSPT (ISO 7-1) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male NPT x Female NPT Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male BSPP x Female BSPP Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male BSPT x Female BSPT Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male NPT x Long Butt Weld (+100 mm) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male BSPP x Long Butt Weld (+100 mm) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Male BSPT x Long Butt Weld (+100 mm) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female NPT (ASME B1.20.1) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPP (ISO 228-1) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPT (ISO 7-1) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Socket Weld (ASME B16.11) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Socket Weld (EN 12760) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female NPT x Socket Weld Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPP x Socket Weld Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPT x Socket Weld Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld (ASME B16.25) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Butt Weld (EN 12627) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female NPT x Butt Weld Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPP x Butt Weld Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPT x Butt Weld Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female NPT x Long Butt Weld (+100 mm) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPP x Long Butt Weld (+100 mm) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Female BSPT x Long Butt Weld (+100 mm) Ends F44 Needle Valve (UNS S31254 Needle Valve);

Long Butt Weld (+100 mm Weld Stub) Ends F44 Needle Valve (UNS S31254 Needle Valve).

CE Marking of F44 Needle Valve (UNS S31254 Needle Valve):

CE Marking is Available to F44 Needle Valve (UNS S31254 Needle Valve) with a Diameter of DN32 or Larger.

Chemical Composition of F44 Needle Valve (UNS S31254 Needle Valve):

For the Chemical Composition of F44 Needle Valve (UNS S31254 Needle Valve), please refer to EN 10204 Type 3.1 certificate.

Mechanical Properties of F44 Needle Valve (UNS S31254 Needle Valve):

For the Mechanical Properties of F44 Needle Valve (UNS S31254 Needle Valve), please refer to EN 10204 Type 3.1 certificate.

Certificate of F44 Needle Valve (UNS S31254 Needle Valve):

All F44 Needle Valve (UNS S31254 Needle Valve) will be delivered with EN 10204 Type 3.1 Certificate.

Approvals of F44 Needle Valve (UNS S31254 Needle Valve):

MSS SP-110 Certified of F44 Needle Valve (UNS S31254 Needle Valve);

NACE MR 0175 Certified of F44 Needle Valve (UNS S31254 Needle Valve)

API 607 Fire Safe Certified of F44 Needle Valve (UNS S31254 Needle Valve);

ISO 9001 Certified of F44 Needle Valve (UNS S31254 Needle Valve);

PED Certified of F44 Needle Valve (UNS S31254 Needle Valve).

Available Upon Request of F44 Needle Valve (UNS S31254 Needle Valve):

NACE MR0175 is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

ATEX is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

TA-LUFT is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

SIL is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

Degreasing is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

Fire Safe is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

Stem Extension is available upon request of F44 Needle Valve (UNS S31254 Needle Valve);

Double Block and Bleed is available upon request of F44 Needle Valve (UNS S31254 Needle Valve).