Forged Carbon & Stainless Steel 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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Forged Carbon and Stainless Steel Globe Valve - API602, Class 800 to 1500, 1/2 inch to 2 inch

China Industrial Forged Carbon and Stainless Steel Globe Valve Supplier, Exporter, Manufacturer. The API 602 forged steel globe valve is available in both forged carbon steel (A105N, LF2) and stainless steel (F304, F316, F304L, F316L) body materials, covering the most common material selections for high-pressure small-bore throttling and isolation service. Metal seated, rising stem OS&Y, bolted bonnet or welded bonnet construction. Plug disc and needle disc supplied.

End Connections: Threaded (NPT, Screwed), Socket Weld (SW), Butt Weld (BW), Flanged (RF, RTJ). Handwheel operated or bare stem per ISO 5211.

Sizes: 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″ (DN15 to DN50).

Pressure Ratings: ANSI Class 150Lb, 300Lb, 600Lb, 800Lb, 900Lb, 1500Lb and 2500Lb. NACE MR 0175 on request.

Forged Carbon and Stainless Steel Globe Valve Specifications

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

• Constructions: OS&Y, Bolted Bonnet (B.B.), Welded Bonnet (W.B.) and Pressure Sealed Bonnet (PSB)

• Bore Type: Full Port / Reduced Port

• Disc Type: Plug Disc, Needle Disc

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

• Pressure Ratings: ANSI Class 150LB, 300LB, 600LB, 800LB, 900LB, 1500LB and 2500LB

• End Connections: Threaded (NPT, Screwed) per ANSI B1.20.1, Socket Weld (SW) per ANSI B16.11, Butt Weld (BW) per ANSI B16.25, Flanged (RF, RTJ) per ANSI B16.5

• Body Materials: A105N, LF2, F5, F11, F22, F304, F304L, F316, F316L, F51, F53 or Equivalent

• Trim Materials: 13Cr, STL, SS304, SS316, Hard Faced, Full Hard Faced

• Sour Service: NACE MR 0175 on Request

• Inspection and Test: API 598

• Temperature Range: -29°C to 425°C (-20°F to 800°F)

✓ Carbon steel and stainless steel options cover the most common high-pressure small-bore throttling and isolation service conditions

Carbon Steel vs Stainless Steel Globe Valve Material Comparison

Feature	Carbon Steel (A105N / LF2)	Stainless Steel (F304 / F316)
Standard	ASTM A105 / A350	ASTM A182
Corrosion Resistance	Standard, not for corrosive media	Excellent, for corrosive and oxidizing media
Temperature Range	-29°C to 425°C (LF2: -46°C)	-196°C to 425°C (304L/316L)
Cost	Lower	Higher
Best Application	Steam, water, oil, gas, non-corrosive service	Chemical, offshore, corrosive and cryogenic service

Reference: API 602, ASME B16.34. Material selection depends on operating temperature, pressure and fluid corrosiveness. Contact us for confirmed material certificate.

Forged Carbon and Stainless Steel Globe Valve Materials List

Material Type	Grade	Typical Application
Carbon Steel	A105, A105N, LF2	General hydrocarbon, steam, water, oil and gas
Alloy Steel	F5, F11, F22	High-temperature steam, power plants, refinery
Stainless Steel	F304, F304L, F316, F316L	Corrosive media, chemical processing, offshore
Duplex Stainless Steel	F51, F53	High-chloride, seawater, sour service

Reference: API 602, BS 5352, ASME B16.34. Trim options: 13Cr (1#), 13Cr disc and STL seat (8#), Half or Full Stellite (5#), SS304, SS316. Contact us for confirmed material certificate.

Pressure Class Comparison

Pressure Class	Design Pressure (bar)	Design Pressure (psi)	Typical Service
Class 800	138	2,000	General hydrocarbon, steam, water, instrument lines
Class 900	153	2,220	High-pressure steam, gas and oil transmission
Class 1500	260	3,750	High-pressure steam, gas injection, wellhead equipment
Class 2500	430	6,250	High-pressure steam generators, natural gas compressor lines

Reference: ASME B16.34. Class 800 is a forged valve-specific rating (approximately between Class 600 and 900). Class 150, 300 and 600 available on request for low to medium pressure service.

Forged Carbon and Stainless Steel Globe Valve Dimensions (SW and NPT Ends)

NPS (inch)	DN (mm)	L (mm) - Class 800	L (mm) - Class 1500
1/2″	15	79	92
3/4″	20	92	111
1″	25	111	120
1-1/4″	32	120	152
1-1/2″	40	152	172
2″	50	172	200

Reference: API 602 / ASME B16.10. Dimensions for SW and NPT ends. Contact us for confirmed drawing and quotation.

Forged Carbon and Stainless Steel Globe Valve Applications

• Oil and Gas Industry: Wellhead equipment, manifold and flowline throttling and isolation.

• Power Generation: High-pressure steam throttling, boiler drains, turbine bypass lines.

• Petrochemical: Hydrocarbon processing, catalytic cracking, reformer units.

• Chemical Processing: Corrosive fluid throttling and isolation (stainless steel body).

• Instrumentation: Instrument root valves, steam trap isolation, sensing line isolation.

• Water Treatment: High-pressure pump isolation, desalination, boiler feed water.

FAQ - Forged Carbon and Stainless Steel Globe Valve

Q1: What is the difference between carbon steel and stainless steel forged globe valves?

A: Carbon steel (A105N, LF2) globe valves are suitable for non-corrosive service such as steam, water, oil and gas, at a lower cost. Stainless steel (F304, F316) globe valves offer excellent corrosion resistance for chemical, offshore and cryogenic service, but at a higher cost. Material selection depends on fluid corrosiveness, operating temperature and budget.

Q2: What trim options are available?

A: Standard trim options include Trim 1# (13Cr disc, 13Cr seat), Trim 8# (13Cr disc, STL seat), Trim 5# (Half Stellite or Full Stellite), and SS304 or SS316 trim. Trim selection depends on operating temperature, pressure and fluid erosiveness. For severe erosive service, Full Stellite (Trim 5#) is recommended.

Q3: What is the difference between plug disc and needle disc?

A: Plug disc is the standard design for general throttling service, offering good flow control and sealing. Needle disc has a longer, tapered plug for precise flow regulation in small-bore instrumentation and sampling lines. Both are available for forged steel globe valves.

Q4: What end connections are available?

A: We offer Threaded (NPT, Screwed) per ANSI B1.20.1, Socket Weld (SW) per ANSI B16.11, Butt Weld (BW) per ANSI B16.25, and Flanged (RF, RTJ) per ANSI B16.5. The choice depends on piping specification, pressure class and installation requirements.

Q5: What is the difference between bolted bonnet, welded bonnet and pressure seal bonnet?

A: Bolted bonnet (B.B.) allows easy access for maintenance and trim replacement. Welded bonnet (W.B.) provides a more compact design and is preferred for high-pressure applications. Pressure seal bonnet (PSB) uses internal pressure to self-energize the seal, providing superior leak-tightness for Class 900 to 2500 service.

Q6: Is NACE MR 0175 available for carbon and stainless steel globe valves?

A: Yes, NACE MR 0175 compliance is available on request for sour oil and gas applications. This includes material selection, hardness control and testing to ensure resistance to sulfide stress cracking. Please specify NACE MR 0175 in your inquiry.