2500Lb A182 F91 Forged Globe Valve

CAST VALVE SERIES

 GATE VALVE

 GLOBE VALVE

 CHECK VALVE

 BALL VALVE

 BUTTERFLY VALVE

FORGED VALVE SERIES

 FORGED GATE VALVE

 FORGED GLOBE VALVE

 FORGED CHECK VALVE

INDUSTRIAL STRAINER SERIES

 Y TYPE STRAINER

 BASKET STRAINER

 T TYPE STRAINER

 TEMPORARY STRAINER

 FORGED STRAINER

 STRAINER SCREEN & BASKET

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A182 F91 2500LB SW Globe Valve (WB) - API602, Class 2500, 1/2 inch to 2 inch

The A182 F91 2500LB SW Globe Valve is a forged alloy steel globe valve with a Welded Bonnet (WB) design, engineered for ultra-high-pressure and high-temperature service. Manufactured to API 602, it features Socket Weld (SW) ends and a rising stem OS&Y configuration. The F91 material (9Cr-1Mo-V-Nb) offers superior creep strength and oxidation resistance up to 650°C, making it ideal for ultra-supercritical boiler, main steam and high-temperature hydrocracking applications. Available in sizes 1/2 to 2 inch with Half Stellite or Full Stellite trim.

F91 2500Lb Forged Globe Valve Specifications

• Type of Valve: Globe Valve, Shut Off Valve, Straight

• Type of Valve Body: Forged Type, Forged Steel A182-F91 (9Cr-1Mo-V-Nb)

• Type of Bonnet: Welded Bonnet (WB)

• Type of Stem: Rising Stem, OS&Y

• Type of Bore: Full Port / Reduced Port

• Type of Drive: Manual, Handwheel

• Type of End Connection: Socket Weld (SW) per ANSI B16.11

• Size Range: 1/2 inch to 2 inch (DN15 to DN50)

• Pressure Rating: ANSI Class 2500Lb (2500#)

• Body Material: Alloy Steel, A182-F91

• Trim Material: Half Stellite, Full Stellite, Trim No.5, Trim No.8

• Design and Manufacture: API 602, BS 5352, ASME B16.34

• Test and Inspection: API 598

• Temperature Range: -29°C to 650°C (-20°F to 1200°F)

✓ A182 F91 (9Cr-1Mo-V-Nb) offers superior creep strength and oxidation resistance up to 650°C, ideal for ultra-supercritical boiler and main steam service

Chemical Composition Comparison of A182 F91, F22 and F11

Element (%)	F91 (9Cr-1Mo-V-Nb)	F22 (2.25Cr-1Mo)	F11 (1.25Cr-0.5Mo)
Carbon (C)	0.08 – 0.12	0.05 – 0.15	0.05 – 0.15
Chromium (Cr)	8.00 – 9.50	2.00 – 2.50	1.00 – 1.50
Molybdenum (Mo)	0.85 – 1.05	0.87 – 1.13	0.44 – 0.65
Vanadium (V)	0.18 – 0.25	—	—
Niobium (Nb)	0.06 – 0.10	—	—
Nitrogen (N)	0.030 – 0.070	—	—
Nickel (Ni)	0.40 max	—	—
Manganese (Mn)	0.30 – 0.60	0.30 – 0.60	0.30 – 0.60
Silicon (Si)	0.20 – 0.50	0.50 max	0.50 – 1.00

Reference: ASTM A182/A182M. F91 is a modified 9Cr-1Mo steel with controlled additions of vanadium, niobium and nitrogen for enhanced creep strength. F22 and F11 are conventional Cr-Mo grades.

Mechanical Properties Comparison of A182 F91, F22 and F11

Property	F91	F22 Cl.3	F11 Cl.3
Tensile Strength (min)	585 MPa	515 MPa	485 MPa
Yield Strength (min)	415 MPa	310 MPa	275 MPa
Elongation (min)	20%	18%	20%
Hardness (max)	248 HBW	235 HBW	207 HBW
Max Service Temp	650°C	595°C	450°C

Reference: ASTM A182/A182M. F91 achieves significantly higher yield strength and service temperature than F22 and F11.

Material Selection Guide: F91 vs F22 vs F11

Material	Key Advantage	Typical Application
F91	Superior creep strength up to 650°C, oxidation resistance	Ultra-supercritical boiler, main steam, hot reheat
F22	Good hydrogen attack resistance, moderate creep strength	Hydroprocessing, hydrocracking, high-temp steam
F11	Cost-effective for moderate elevated temperature	Moderate high-temp steam, power plant piping

Reference: ASTM A182/A182M. F91 is the creep-strength-enhanced 9Cr grade for ultra-supercritical service. F22 and F11 are conventional Cr-Mo grades.

A182 F91 2500LB SW Globe Valve Applications

• Ultra-Supercritical Boiler: Main steam isolation, superheater and reheater outlet, boiler blowdown on ultra-high-pressure high-temperature lines.

• Power Generation: Ultra-supercritical and advanced ultra-supercritical boiler drain, air vent and sampling line isolation.

• Hydroprocessing: Hydrocracker and hydrotreater reactor isolation, hydrogen recycle compressor piping at elevated temperatures.

• High-Temperature Steam: Main steam and hot reheat steam isolation on small-bore high-pressure piping.

• Petrochemical: Reformer outlet piping, high-temperature hydrogen service and reagent injection lines.

• Oil and Gas: Wellhead control panels and gas injection lines at Class 2500.

FAQ - A182 F91 2500LB SW Globe Valve (WB)

Q1: What is A182 F91 and why is it used for ultra-high-temperature valves?

A: A182 F91 is a 9Cr-1Mo-V-Nb forged alloy steel specifically designed for ultra-high-temperature service up to 650°C (1200°F). The 9% chromium content provides excellent oxidation resistance, while vanadium and niobium enhance creep strength. F91 is the standard material for ultra-supercritical boiler and main steam applications where F22 lacks sufficient creep strength.

Q2: What is the difference between A182 F91 and A182 F22?

A: F22 (2.25Cr-1Mo) is suitable for high-temperature service up to 595°C, while F91 (9Cr-1Mo-V-Nb) offers superior creep strength and oxidation resistance up to 650°C. F91 requires stricter welding and heat treatment control (PWHT) but provides significantly higher allowable stress values at elevated temperatures. F91 is preferred for ultra-supercritical and advanced ultra-supercritical power plant applications.

Q3: What is the difference between Welded Bonnet (WB) and Bolted Bonnet (BB)?

A: Welded Bonnet (WB) provides a permanent, leak-tight seal by welding the bonnet to the body, making it more compact and suitable for ultra-high-pressure service. Bolted Bonnet (BB) allows easy access for trim maintenance but requires a gasket and bolts. WB is preferred for Class 2500 and critical high-temperature service where leak-tightness is paramount.

Q4: What trim options are available for F91 2500LB SW globe valves?

A: Standard trim options include Half Stellite (Trim No.5), Full Stellite (Trim No.5), and Trim No.8. For severe erosive service at ultra-high temperature, Full Stellite trim is recommended. The seat surface can be integral or hardfaced with Stellite 6 for extended service life.

Q5: What is the temperature range for A182 F91 globe valves?

A: The maximum service temperature for A182 F91 is 650°C (1200°F). The minimum temperature is typically -29°C (-20°F). For temperatures below -29°C, low-temperature materials such as A350 LF2 or stainless steel should be considered.

Q6: Is NACE MR 0175 available for A182 F91 globe valves?

A: Yes, NACE MR 0175 compliance is available on request for sour oil and gas applications. F91 with hardness controlled to 22 HRC maximum satisfies NACE MR 0175 requirements for alloy steel in sour service. This includes material selection, hardness control and testing to ensure resistance to sulfide stress cracking.