The most notable features of Inconel 718 are its exceptional high-temperature strength, superior corrosion resistance, and excellent weldability.

1. Key advantages of Inconel 718 valves manufactured by Freeman Valve:

1.1 Outstanding comprehensive mechanical properties of Inconel 718 valves manufactured by Freeman Valve:

After solution treatment and aging heat treatment, Inconel 718 valves exhibit outstanding comprehensive mechanical properties (-253℃～650℃), possessing excellent yield strength, creep resistance, endurance, and excellent resistance to thermomechanical fatigue and low-cycle fatigue.

1.2 Excellent cryogenic toughness of Inconel 718 valves manufactured by Freeman Valve:

Inconel 718 valves do not exhibit brittleness at 253℃ (liquid hydrogen temperature range), retaining good plasticity.

1.3 Freeman Valve's Inconel 718 valves possess excellent corrosion resistance and oxidation resistance:

Inconel 718 valves are resistant to corrosion from seawater, chloride ions, H₂S, CO₂, and acidic oil and gas media; furthermore, Inconel 718 resists stress corrosion cracking; and its oxidation resistance remains stable at medium temperatures.

1.4 Freeman Valve's Inconel 718 valves exhibit excellent weldability.

2. Precautions for using Inconel 718 valves:

2.1 Long-term use at temperatures above 700℃ is not recommended:

The strength and creep performance of Inconel 718 valves rapidly decline at temperatures above 700℃. Therefore, we recommend keeping the long-term stable operating temperature below 650℃.

2.2 Limited Resistance to Strong Oxidation and High-Temperature Sulfidation: Inconel 718 valves exhibit less resistance to sulfidation corrosion than some high-cobalt-nickel-based alloys in sulfur-containing gas environments above 700℃.

3. Key Application Areas of Inconel 718 Valves:

3.1 Freeman Valve's Inconel 718 valves are widely used in cryogenic pipelines, such as those for liquid oxygen and liquid hydrogen media.

3.2 Freeman Valve's Inconel 718 valves are widely used in the power generation sector, such as steam generator pipelines, high-temperature and high-pressure water corrosion resistant pipelines, and pressurized water reactor nuclear power plants (nuclear radiation irradiation).

3.3 Freeman Valve's Inconel 718 valves are widely used in the oil and deep-sea oil and gas sector (NACE MR0175 operating condition), such as downhole safety valves and subsea valves; suitable for high-temperature and high-pressure corrosive environments where H₂S, CO₂, and chloride ions coexist.

3.4 Freeman Valve's Inconel 718 valves are widely used in the petrochemical industry, such as in high-temperature and high-pressure reactors, hydrogenation units, and special high-temperature valves.

4. Selection Tips:

4.1 Recommended choice: Inconel 718 valves are suitable for heavy-duty components requiring welding and operating between -253°C and 650°C, while also considering strength and corrosion resistance.

4.2 Not recommended choice: Inconel 718 valves are not suitable for applications with continuous operating temperatures above 650°C, or for applications requiring only strong corrosion and low strength. Inconel 625 valves may be considered instead.

Design Standard of Inconel 718 Gate Valve:

Design Acc. to ASME B16.34 (ANSI Standard Inconel 718 Gate Valve);

Design Acc. to EN-12516-1/2 (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve).

Test Standard of Inconel 718 Gate Valve:

Test Acc. to API 598 (ANSI Standard Inconel 718 Gate Valve);

Test Acc. to EN 12266-1/2 (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve).

Surface Finishing of Inconel 718 Gate Valve:

All Inconel 718 Gate Valve surface is finely machined to achieve the required roughness and conforms to standard MSS SP-110.

Size of Inconel 718 Gate Valve:

From DN1/4’’ to 48’’ (ANSI Standard Inconel 718 Gate Valve);

From DN8 to DN1200 (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve).

Face to Face of Inconel 718 Gate Valve:

Face to Face Acc. to ASME B16.10 (ANSI Standard Inconel 718 Gate Valve);

Face to Face Acc. to EN 558-1 (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve).

Pressure Rating of Inconel 718 Gate Valve:

ANSI Class 150 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

ANSI Class 300 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

ANSI Class 600 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

ANSI Class 800 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

ANSI Class 900 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

ANSI Class 1500 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

ANSI Class 2500 Inconel 718 Gate Valve (ANSI Standard Inconel 718 Gate Valve);

EN 1092 PN 16 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 25 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 40 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 63 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 100 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 160 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 250 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 320 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve);

EN 1092 PN 400 Inconel 718 Gate Valve (EN Standard Inconel 718 Gate Valve, DIN Standard Inconel 718 Gate Valve).

Working Temperature of Inconel 718 Gate Valve:

Please refer to the "Temperature and Pressure Curve of Inconel 718 Gate Valve" for temperature and pressure changes.

Ends Connection of Inconel 718 Gate Valve:

ANSI Flange Ends Inconel 718 Gate Valve;

ANSI Integral Flange Ends Inconel 718 Gate Valve;

ANSI Welded Flange Ends Inconel 718 Gate Valve;

Butt Weld (ASME B16.25) Ends Inconel 718 Gate Valve;

Butt Weld x ANSI Flange Ends Inconel 718 Gate Valve;

EN 1092 Flange Ends Inconel 718 Gate Valve;

EN 1092 Integral Flange Ends Inconel 718 Gate Valve;

EN 1092 Welded Flange Ends Inconel 718 Gate Valve;

Butt Weld (EN 12627) Ends Inconel 718 Gate Valve;

Butt Weld (ISO 1127) Ends Inconel 718 Gate Valve;

Butt Weld x EN 1092 Flange Ends Inconel 718 Gate Valve;

Male NPT (ASME B1.20.1) Ends Inconel 718 Gate Valve;

Male BSPP (ISO 228-1) Ends Inconel 718 Gate Valve;

Male BSPT (ISO 7-1) Ends Inconel 718 Gate Valve;

Male NPT x Female NPT Ends Inconel 718 Gate Valve;

Male BSPP x Female BSPP Ends Inconel 718 Gate Valve;

Male BSPT x Female BSPT Ends Inconel 718 Gate Valve;

Male NPT x Long Butt Weld (+100 mm) Ends Inconel 718 Gate Valve;

Male BSPP x Long Butt Weld (+100 mm) Ends Inconel 718 Gate Valve;

Male BSPT x Long Butt Weld (+100 mm) Ends Inconel 718 Gate Valve;

Female NPT (ASME B1.20.1) Ends Inconel 718 Gate Valve;

Female BSPP (ISO 228-1) Ends Inconel 718 Gate Valve;

Female BSPT (ISO 7-1) Ends Inconel 718 Gate Valve;

Socket Weld (ASME B16.11) Ends Inconel 718 Gate Valve;

Socket Weld (EN 12760) Ends Inconel 718 Gate Valve;

Female NPT x Socket Weld Ends Inconel 718 Gate Valve;

Female BSPP x Socket Weld Ends Inconel 718 Gate Valve;

Female BSPT x Socket Weld Ends Inconel 718 Gate Valve;

Butt Weld (ASME B16.25) Ends Inconel 718 Gate Valve;

Butt Weld (EN 12627) Ends Inconel 718 Gate Valve;

Female NPT x Butt Weld Ends Inconel 718 Gate Valve;

Female BSPP x Butt Weld Ends Inconel 718 Gate Valve;

Female BSPT x Butt Weld Ends Inconel 718 Gate Valve;

Female NPT x Long Butt Weld (+100 mm) Ends Inconel 718 Gate Valve;

Female BSPP x Long Butt Weld (+100 mm) Ends Inconel 718 Gate Valve;

Female BSPT x Long Butt Weld (+100 mm) Ends Inconel 718 Gate Valve;

Long Butt Weld (+100 mm Weld Stub) Ends Inconel 718 Gate Valve.

CE Marking of Inconel 718 Gate Valve:

CE Marking is Available to Inconel 718 Gate Valve with a Diameter of DN32 or Larger.

Chemical Composition of Inconel 718 Gate Valve:

For the Chemical Composition of Inconel 718 Gate Valve, please refer to EN 10204 Type 3.1 certificate.

Mechanical Properties of Inconel 718 Gate Valve:

For the Mechanical Properties of Inconel 718 Gate Valve, please refer to EN 10204 Type 3.1 certificate.

Certificate of Inconel 718 Gate Valve:

All Inconel 718 Gate Valve will be delivered with EN 10204 Type 3.1 Certificate.

Approvals of Inconel 718 Gate Valve:

MSS SP-110 Certified of Inconel 718 Gate Valve;

NACE MR 0175 Certified of Inconel 718 Gate Valve

API 607 Fire Safe Certified of Inconel 718 Gate Valve;

ISO 9001 Certified of Inconel 718 Gate Valve;

PED Certified of Inconel 718 Gate Valve.

Available Upon Request of Inconel 718 Gate Valve:

NACE MR0175 is available upon request of Inconel 718 Gate Valve;

ATEX is available upon request of Inconel 718 Gate Valve;

TA-LUFT is available upon request of Inconel 718 Gate Valve;

SIL is available upon request of Inconel 718 Gate Valve;

Degreasing is available upon request of Inconel 718 Gate Valve;

Fire Safe is available upon request of Inconel 718 Gate Valve;

Stem Extension is available upon request of Inconel 718 Gate Valve;

Double Block and Bleed is available upon request of Inconel 718 Gate Valve.