347 Globe Valve, 347H Globe Valve
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Main Features
Valve Type
Size
Pressure Rating
Ends Connection
Material
Operation
Valve Positioner / Limit Switch Box (Pneumatic Actuator Operation Available Only)
Solenoid Valve (Pneumatic Actuator Operation Available Only)
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1. The stainless steel 347 ANSI globe valve produced by Freeman Valve has the following advantages:

 

1.1 Excellent high temperature resistance:

a. Niobium (Nb) is added as a stabilizer in the stainless steel 347 ANSI globe valve produced by Freeman Valve, which significantly improves the ability to resist sensitization (carbide precipitation) and is suitable for high temperature environments of 425-900℃ (such as welding or long-term heat exposure);

 

b. The stainless steel 347 ANSI globe valve produced by Freeman Valve is more resistant to high temperature creep and oxidation than 304/316;

 

1.2 Excellent welding performance:

The niobium element in the stainless steel 347 ANSI globe valve produced by Freeman Valve inhibits intergranular corrosion in the heat affected zone (HAZ) of welding, and is suitable for parts that is not heat treated after welding;

 

1.3 Good corrosion resistance:

a. The stainless steel 347 ANSI globe valve produced by Freeman Valve perform well in oxidizing acids (such as nitric acid), organic acids and weak bases, and has better resistance to intergranular corrosion than 304.

b. Freeman Valve's stainless steel 347 ANSI globe valve is better than 304 in resistance to chloride stress corrosion cracking, but slightly worse than 316.

 

1.4 Good mechanical properties:

Freeman Valve's stainless steel 347 ANSI globe valve has similar strength to stainless steel 304 at room temperature, but they can still maintain high strength at high temperatures.

 

2. The following issues should be noted when using stainless steel 347 ANSI globe valve:

Stainless steel 347 ANSI globe valve is not suitable for reducing environments: it has limited corrosion resistance in sulfur-containing or reducing acids (such as sulfuric acid) and need to be selected according to the medium.

 

3. 347H stainless steel is a high-carbon version of 347 (carbon content 0.04-0.10%), optimized for high-temperature strength while retaining the niobium (Nb) stabilization properties of 347. The stainless steel 347H ANSI globe valve produced by Freeman Valve has the following advantages:

 

3.1 Excellent high temperature performance

a. The stainless steel 347H ANSI globe valve produced by Freeman Valve has higher high temperature strength: Due to the increased carbon content, 347H has better creep resistance and lasting strength at high temperatures (above 500°C), and is suitable for long-term high temperature service environments (such as boilers and heat exchangers).

 

b. The stainless steel 347H ANSI globe valve produced by Freeman Valve has good anti-sensitization ability: Niobium (Nb) in the stainless steel 347H ANSI globe valve produced by Freeman Valve can reduce the precipitation of chromium carbide (Cr23C6) and reduce the risk of intergranular corrosion.

 

3.2 The stainless steel 347H ANSI globe valve produced by Freeman Valve has good weldability:

Similar to 347, the stainless steel 347H ANSI globe valve produced by Freeman Valve can maintain corrosion resistance without heat treatment after welding (but the heat input needs to be controlled to avoid heat affected zone problems).

 

3.3 Excellent corrosion resistance:

a. Freeman Valve's 347H stainless steel ANSI globe valve perform well in oxidizing media (such as nitric acid), better than 304H/321H.

 

b. Freeman Valve's 347H stainless steel ANSI globe valve has better resistance to chloride stress corrosion cracking (SCC) than 304H, but not as good as 316H.

 

4. The following issues should be noted when using 347H stainless steel ANSI globe valve:

4.1 The low-temperature toughness of 347H stainless steel ANSI globe valve is slightly lower. Due to the high carbon content, the low-temperature impact toughness may be slightly lower than that of low-carbon austenitic stainless steel (such as 304L).

 

4.2 Stainless steel 347H ANSI globe valve is not suitable for reducing environments. It has limited corrosion resistance in sulfur-containing or reducing acids (such as sulfuric acid), so materials should be selected with caution.

 

5. Classic application of stainless steel 347H in the chemical industry

Stainless steel 347H (UNS S34709) is widely used in high temperature, high pressure and highly corrosive environments in the chemical industry due to its excellent high temperature strength, anti-sensitization ability and corrosion resistance. The following is typical application scenarios:

 

5.1 Petrochemical industry, for example:

a. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in catalytic cracking units: the main advantages are resistance to high temperature (500-900℃) oil and gas corrosion, resistance to thermal fatigue and thermal shock (frequent start-up and shutdown conditions), and niobium stabilization to reduce the risk of post-welding sensitization;

 

b. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in ethylene cracking furnaces: the main advantages are resistance to high temperature (800-1100℃) hydrocarbon cracking environments, resistance to carburization and oxidation, and longer service life than 321H/304H;

 

c. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in hydro processing units: the main advantages are resistance to H₂S and high temperature hydrogen corrosion (better than 304H), and resistance to chloride stress corrosion cracking (SCC).

 

5.2 Fertilizer industry, for example:

a. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in nitric acid production equipment: the main advantage is excellent corrosion resistance in concentrated nitric acid (>65%), and can be used without heat treatment after welding;

 

b. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in urea synthesis equipment: the main advantage is resistance to high temperature and high-pressure ammonium carbamate corrosion, and more resistant to high temperature creep than 316L.

 

5.3 Chemical processing field, for example:

a. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in sulfuric acid equipment and phosphoric acid equipment: the main advantage is good performance in medium concentration oxidizing acid (note: not suitable for reducing sulfuric acid environment, high molybdenum stainless steel such as 904L must be selected);

b. Freeman Valve's stainless steel 347/347H ANSI globe valve has been widely used in acetic acid production equipment: the main advantage is resistance to high temperature acetic acid corrosion (especially when containing halogen impurities).

 

5.4 Other chemical applications, such as:

a. Coal chemical industry, such as coal gasification furnace, synthesis gas pipeline: the main advantages are resistance to high temperature sulfur corrosion and thermal fatigue;

b. Chlor-alkali industry, such as high temperature chlorine treatment equipment: the main advantage is resistance to chloride ion stress corrosion (better than 304H);

c. Polymer production, such as polymerization reactor, hot oil system pipeline: the main advantage is long-term high temperature stability.

 

6. The core value of 347H valve in the chemical industry lies in:

a. High temperature stability (long-term use above 500℃);

b. Welding reliability (non-sensitization after welding);

c. Resistance to nitric acid/oxidizing medium corrosion.

 

7. Typical recommended scenarios for 347H ANSI globe valve:

a. High-temperature components of catalytic cracking unit (FCCU);

b. Ethylene cracking furnace tubes;

c. Nitric acid production equipment;

d. High-temperature and high-pressure heat exchangers.

 

8. Scenarios where 347H ANSI globe valve is not recommended:

a. Reducing sulfuric acid environment

b. High-concentration chloride and low-temperature environment (super austenitic stainless steel such as 254SMO is preferred)

 

 


Design Standard of 347 Globe Valve (347H Globe Valve):

Design Acc. to ASME B16.34 (ANSI Standard 347 Globe Valve (347H Globe Valve));

Design Acc. to EN-12516-1/2 (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve)).

 

Test Standard of 347 Globe Valve (347H Globe Valve):

Test Acc. to API 598 (ANSI Standard 347 Globe Valve (347H Globe Valve));

Test Acc. to EN 12266-1/2 (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve)).

 

Surface Finishing of 347 Globe Valve (347H Globe Valve):

All 347 Globe Valve (347H Globe Valve) surface is finely machined to achieve the required roughness and conforms to standard MSS SP-110.

 

Size of 347 Globe Valve (347H Globe Valve):

From DN1/4’’ to 48’’ (ANSI Standard 347 Globe Valve (347H Globe Valve));

From DN8 to DN1200 (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve)).

 

Face to Face of 347 Globe Valve (347H Globe Valve):

Face to Face Acc. to ASME B16.10 (ANSI Standard 347 Globe Valve (347H Globe Valve));

Face to Face Acc. to EN 558-1 (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve)).

 

Pressure Rating of 347 Globe Valve (347H Globe Valve):

ANSI Class 150 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

ANSI Class 300 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

ANSI Class 600 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

ANSI Class 800 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

ANSI Class 900 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

ANSI Class 1500 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

ANSI Class 2500 347 Globe Valve (347H Globe Valve) (ANSI Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 16 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 25 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 40 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 63 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 100 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 160 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 250 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 320 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve));

EN 1092 PN 400 347 Globe Valve (347H Globe Valve) (EN Standard 347 Globe Valve (347H Globe Valve), DIN Standard 347 Globe Valve (347H Globe Valve)).

 

Working Temperature of 347 Globe Valve (347H Globe Valve):

Please refer to the "Temperature and Pressure Curve of 347 Globe Valve (347H Globe Valve)" for temperature and pressure changes.

 

Ends Connection of 347 Globe Valve (347H Globe Valve):

ANSI Flange Ends 347 Globe Valve (347H Globe Valve);

ANSI Integral Flange Ends 347 Globe Valve (347H Globe Valve);

ANSI Welded Flange Ends 347 Globe Valve (347H Globe Valve);

Butt Weld (ASME B16.25) Ends 347 Globe Valve (347H Globe Valve);

Butt Weld x ANSI Flange Ends 347 Globe Valve (347H Globe Valve);

EN 1092 Flange Ends 347 Globe Valve (347H Globe Valve);

EN 1092 Integral Flange Ends 347 Globe Valve (347H Globe Valve);

EN 1092 Welded Flange Ends 347 Globe Valve (347H Globe Valve);

Butt Weld (EN 12627) Ends 347 Globe Valve (347H Globe Valve);

Butt Weld (ISO 1127) Ends 347 Globe Valve (347H Globe Valve);

Butt Weld x EN 1092 Flange Ends 347 Globe Valve (347H Globe Valve);

Male NPT (ASME B1.20.1) Ends 347 Globe Valve (347H Globe Valve);

Male BSPP (ISO 228-1) Ends 347 Globe Valve (347H Globe Valve);

Male BSPT (ISO 7-1) Ends 347 Globe Valve (347H Globe Valve);

Male NPT x Female NPT Ends 347 Globe Valve (347H Globe Valve);

Male BSPP x Female BSPP Ends 347 Globe Valve (347H Globe Valve);

Male BSPT x Female BSPT Ends 347 Globe Valve (347H Globe Valve);

Male NPT x Long Butt Weld (+100 mm) Ends 347 Globe Valve (347H Globe Valve);

Male BSPP x Long Butt Weld (+100 mm) Ends 347 Globe Valve (347H Globe Valve);

Male BSPT x Long Butt Weld (+100 mm) Ends 347 Globe Valve (347H Globe Valve);

Female NPT (ASME B1.20.1) Ends 347 Globe Valve (347H Globe Valve);

Female BSPP (ISO 228-1) Ends 347 Globe Valve (347H Globe Valve);

Female BSPT (ISO 7-1) Ends 347 Globe Valve (347H Globe Valve);

Socket Weld (ASME B16.11) Ends 347 Globe Valve (347H Globe Valve);

Socket Weld (EN 12760) Ends 347 Globe Valve (347H Globe Valve);

Female NPT x Socket Weld Ends 347 Globe Valve (347H Globe Valve);

Female BSPP x Socket Weld Ends 347 Globe Valve (347H Globe Valve);

Female BSPT x Socket Weld Ends 347 Globe Valve (347H Globe Valve);

Butt Weld (ASME B16.25) Ends 347 Globe Valve (347H Globe Valve);

Butt Weld (EN 12627) Ends 347 Globe Valve (347H Globe Valve);

Female NPT x Butt Weld Ends 347 Globe Valve (347H Globe Valve);

Female BSPP x Butt Weld Ends 347 Globe Valve (347H Globe Valve);

Female BSPT x Butt Weld Ends 347 Globe Valve (347H Globe Valve);

Female NPT x Long Butt Weld (+100 mm) Ends 347 Globe Valve (347H Globe Valve);

Female BSPP x Long Butt Weld (+100 mm) Ends 347 Globe Valve (347H Globe Valve);

Female BSPT x Long Butt Weld (+100 mm) Ends 347 Globe Valve (347H Globe Valve);

Long Butt Weld (+100 mm Weld Stub) Ends 347 Globe Valve (347H Globe Valve).

 

CE Marking of 347 Globe Valve (347H Globe Valve):

CE Marking is Available to 347 Globe Valve (347H Globe Valve) with a Diameter of DN32 or Larger.

 

Chemical Composition of 347 Globe Valve (347H Globe Valve):

For the Chemical Composition of 347 Globe Valve (347H Globe Valve), please refer to EN 10204 Type 3.1 certificate.

 

Mechanical Properties of 347 Globe Valve (347H Globe Valve):

For the Mechanical Properties of 347 Globe Valve (347H Globe Valve), please refer to EN 10204 Type 3.1 certificate.

 

Certificate of 347 Globe Valve (347H Globe Valve):

All 347 Globe Valve (347H Globe Valve) will be delivered with EN 10204 Type 3.1 Certificate.

 

Approvals of 347 Globe Valve (347H Globe Valve):

MSS SP-110 Certified of 347 Globe Valve (347H Globe Valve);

NACE MR 0175 Certified of 347 Globe Valve (347H Globe Valve)

API 607 Fire Safe Certified of 347 Globe Valve (347H Globe Valve);

ISO 9001 Certified of 347 Globe Valve (347H Globe Valve);

PED Certified of 347 Globe Valve (347H Globe Valve).

 

Available Upon Request of 347 Globe Valve (347H Globe Valve):

NACE MR0175 is available upon request of 347 Globe Valve (347H Globe Valve);

ATEX is available upon request of 347 Globe Valve (347H Globe Valve);

TA-LUFT is available upon request of 347 Globe Valve (347H Globe Valve);

SIL is available upon request of 347 Globe Valve (347H Globe Valve);

Degreasing is available upon request of 347 Globe Valve (347H Globe Valve);

Fire Safe is available upon request of 347 Globe Valve (347H Globe Valve);

Stem Extension is available upon request of 347 Globe Valve (347H Globe Valve);

Double Block and Bleed is available upon request of 347 Globe Valve (347H Globe Valve).

 


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