904L is an ultra-low carbon, high-alloy austenitic stainless steel. The core advantage of 904L ball valves is their exceptional corrosion resistance in harsh environments such as dilute sulfuric acid and chloride-containing media, and their ease of machining and welding.
① Freeman Valve's 904L ball valves have high molybdenum (Mo: 4~5%) and copper (Cu: 1~2%) content, significantly improving their resistance to reducing acids (such as sulfuric acid and phosphoric acid) and halides (such as chloride ions);
② Freeman Valve's 904L ball valves perform excellently in media such as dilute sulfuric acid, boiling phosphoric acid, and organic acids, exhibiting outstanding resistance to pitting and crevice corrosion.
Freeman Valve's 904L ball valves are suitable for environments containing chloride ions (such as seawater and chloride solutions), exhibiting superior resistance to stress corrosion cracking compared to conventional austenitic stainless steels.
Freeman Valve's 904L ball valves maintain stability at high temperatures and can withstand short-term environments up to approximately 400°C.
In strong oxidizing acids such as nitric acid, 904L ball valves actually have lower corrosion resistance than 304L or 316L valves with lower molybdenum content.
Improper welding or heat treatment of 904L ball valves can easily lead to carbide precipitation, requiring solution treatment (rapid cooling at 1100~1150°C) to restore performance.
For example: dilute sulfuric acid storage tanks, pipelines, heat exchangers (especially for sulfuric acid with a concentration ≤10%, exhibiting excellent corrosion resistance at temperatures ≤40℃).
For example: seawater cooling systems, salt chemical evaporators, chlorination reactor linings.
For example: acetic acid and formic acid production equipment, preventing localized corrosion.
For example: flue gas desulfurization (FGD) system components, acidic wastewater treatment equipment.
For example: crystallizers and condensers used in high-temperature acetic acid media.
For example: reaction vessels and pipelines for high-purity pharmaceuticals (resistant to cleaning agent corrosion).
① The pitting equivalent value (PREN≈33-35) of the 2205 ball valve is higher than that of the 904L ball valves (PREN≈32-34), and the nitrogen content further enhances its resistance to pitting corrosion in high-concentration, high-temperature chloride ion environments (such as high-chlorinated brine in deep well oil production and seawater above 60℃).
② The high nickel + copper content of the 904L ball valves results in a passivation film with significantly greater stability than that of the 2205 ball valves in reducing media containing chloride (such as dilute sulfuric acid + chloride ion mixtures), without exhibiting the phase imbalance problem common in duplex steels.
① Stress corrosion cracking under chloride ion conditions is a common failure mode for 2205 ball valves, but the high nickel content of 904L ball valves significantly reduces this susceptibility. 2205 ball valves also exhibit better SCC resistance than ordinary austenitic steels such as 316L ball valves, but under the same chloride ion concentration and stress conditions, their long-term stability is slightly lower than that of 904L ball valves.
① 904L ball valves require no heat treatment after welding and have good low-temperature toughness, making them suitable for polar and marine environments.
② 2205 ball valves require controlled heat input during welding to avoid excessive ferrite content, but their high strength (tensile strength ≥620MPa, more than 1.2 times that of 904L ball valves) makes them more suitable for high-pressure + high-chlorine composite operating conditions (such as high-pressure seawater pipelines).
Design Standard of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
Design Acc. to ASME B16.34 (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
Design Acc. to EN-12516-1/2 (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)).
Test Standard of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
Test Acc. to API 598 (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
Test Acc. to EN 12266-1/2 (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)).
Surface Finishing of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
All 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) surface is finely machined to achieve the required roughness and conforms to standard MSS SP-110.
Size of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
From DN1/4’’ to 48’’ (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
From DN8 to DN1200 (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)).
Face to Face of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
Face to Face Acc. to ASME B16.10 (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
Face to Face Acc. to EN 558-1 (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)).
Pressure Rating of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
ANSI Class 150 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
ANSI Class 300 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
ANSI Class 600 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
ANSI Class 800 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
ANSI Class 900 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
ANSI Class 1500 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
ANSI Class 2500 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (ANSI Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 16 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 25 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 40 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 63 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 100 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 160 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 250 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 320 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way));
EN 1092 PN 400 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) (EN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), DIN Standard 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)).
Working Temperature of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
Please refer to the "Temperature and Pressure Curve of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)" for temperature and pressure changes.
Ends Connection of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
ANSI Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
ANSI Integral Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
ANSI Welded Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld (ASME B16.25) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld x ANSI Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
EN 1092 Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
EN 1092 Integral Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
EN 1092 Welded Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld (EN 12627) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld (ISO 1127) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld x EN 1092 Flange Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male NPT (ASME B1.20.1) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male BSPP (ISO 228-1) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male BSPT (ISO 7-1) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male NPT x Female NPT Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male BSPP x Female BSPP Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male BSPT x Female BSPT Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male NPT x Long Butt Weld (+100 mm) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male BSPP x Long Butt Weld (+100 mm) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Male BSPT x Long Butt Weld (+100 mm) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female NPT (ASME B1.20.1) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPP (ISO 228-1) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPT (ISO 7-1) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Socket Weld (ASME B16.11) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Socket Weld (EN 12760) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female NPT x Socket Weld Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPP x Socket Weld Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPT x Socket Weld Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld (ASME B16.25) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Butt Weld (EN 12627) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female NPT x Butt Weld Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPP x Butt Weld Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPT x Butt Weld Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female NPT x Long Butt Weld (+100 mm) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPP x Long Butt Weld (+100 mm) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Female BSPT x Long Butt Weld (+100 mm) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Long Butt Weld (+100 mm Weld Stub) Ends 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way).
CE Marking of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
CE Marking is Available to 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) with a Diameter of DN32 or Larger.
Chemical Composition of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
For the Chemical Composition of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), please refer to EN 10204 Type 3.1 certificate.
Mechanical Properties of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
For the Mechanical Properties of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way), please refer to EN 10204 Type 3.1 certificate.
Certificate of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
All 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way) will be delivered with EN 10204 Type 3.1 Certificate.
Approvals of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
MSS SP-110 Certified of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
NACE MR 0175 Certified of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way)
API 607 Fire Safe Certified of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
ISO 9001 Certified of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
PED Certified of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way).
Available Upon Request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way):
NACE MR0175 is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
ATEX is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
TA-LUFT is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
SIL is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Degreasing is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Fire Safe is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Stem Extension is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way);
Double Block and Bleed is available upon request of 904L Ball Valve (Three Way, Four Way, Five Way, Multi Way).
Level Operation 
Series RT Pneumatic Actuator (A) 
Series RT Pneumatic Actuator (M) 
Series RT Pneumatic Actuator (S) 
Series QF Electric Actuator 
Series QU Electric Actuator 
APL 210N Limit Switch Box 
APL 410N Limit Switch Box 
Solenoid Valve 
Solenoid Valve (ATEX) 
Solenoid Valve (ATEX + H2)