Forged Globe Valve 800LBS (Npt & Sw Ends)

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 Globe Valve 800LBS (NPT, SW Ends) - API602, 1/2 inch to 2 inch

China Industrial Forged Globe Valve 800LBS (NPT, SW Ends) Supplier, Exporter, Manufacturer. The API 602 Class 800 forged steel globe valve is designed for high-pressure small-bore throttling and isolation with NPT (Threaded) and SW (Socket Weld) ends. OS&Y rising stem, bolted bonnet or welded bonnet construction. Plug disc and needle disc supplied. Full port, regular port and reduced port available. Class 800 is a forged valve-specific pressure rating defined in API 602, approximately between Class 600 and Class 900, with a design pressure of 138 bar (2,000 psi).

Sizes: 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, 2″ (DN15 to DN50). Body materials include carbon steel (A105, LF2), alloy steel (F5, F11, F22), stainless steel (F304, F316) and duplex steel (F51). Trim options include 1#, 5#, 8# and 12#. NACE MR 0175 on request.

Specifications for Forged Globe Valve 800LBS (NPT, SW Ends)

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

• Pressure Rating: ANSI Class 800Lb (800#) - forged valve-specific rating per API 602

• Constructions: OS&Y, Bolted Bonnet (B.B.), Welded Bonnet (W.B.)

• Bore Type: Full Port / Regular Port / Reduced Port

• Disc Type: Plug Disc, Needle Disc

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

• Threaded Ends: NPT, Screwed, BSP per ANSI B1.20.1

• Socket Weld Ends: Per ANSI B16.11

• Body Materials: A105, LF2, F5, F11, F22, F304, F316, F51 or Equivalent

• Trim Materials: No. 1#, 5#, 8#, 12# Trim, Stainless Steel (SS304, SS316)

• Sour Service: NACE MR 0175 on Request

• Inspection and Test: API 598

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

✓ Class 800 is approximately between Class 600 and Class 900, specifically defined for forged steel small-bore valves in API 602

Forged Globe Valve 800LBS Materials List

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

Reference: API 602, ASME B16.34. Trim options: 1# (13Cr), 5# (Half or Full Stellite), 8# (13Cr disc, STL seat), 12# (SS304/SS316). Contact us for confirmed material certificate.

Class 800 vs Adjacent Pressure Classes

Pressure Class	Design Pressure (bar)	Design Pressure (psi)	Typical Service
Class 600	102	1,480	High-pressure process, refinery and power plant
Class 800	138	2,000	General hydrocarbon, steam, water, instrument lines (this page)
Class 900	153	2,220	High-pressure steam, gas and oil transmission

Reference: API 602 and ASME B16.34. Class 800 is a forged valve-specific rating, approximately between Class 600 and Class 900.

Forged Globe Valve 800LBS (NPT, SW Ends) Dimensions

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

Reference: API 602 / ASME B16.10. Dimensions for NPT and SW ends. Face-to-face dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.

Forged Globe Valve 800LBS (NPT, SW Ends) Applications

• Instrumentation: Instrument root valves, sensing line isolation, steam trap isolation on small-bore high-pressure lines.

• Oil and Gas: Wellhead control panels, chemical injection lines, sampling systems requiring NPT or SW ends.

• Power Generation: Boiler drain, air vent, and sampling line isolation on small-bore high-pressure piping.

• Petrochemical: Hydrocarbon processing, reagent feed lines, catalyst injection.

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

• Hydraulic Systems: High-pressure hydraulic control panels and test stands.

FAQ - Forged Globe Valve 800LBS (NPT, SW Ends)

Q1: What is Class 800 and how does it compare to other classes?

A: Class 800 is a forged valve-specific pressure rating defined in API 602, approximately between Class 600 and Class 900, with a design pressure of 138 bar (2,000 psi). It is specifically used for forged steel small-bore valves and is not part of the standard ASME B16.34 cast valve class series.

Q2: What is the difference between NPT and SW ends?

A: NPT (Threaded) ends are screwed per ANSI B1.20.1, allowing easy installation and removal without welding, suitable for lower pressure or temporary installations. SW (Socket Weld) ends are welded into the piping system per ANSI B16.11, providing a permanent, leak-tight connection ideal for high-pressure small-bore applications. Both are available in Class 800.

Q3: What is the difference between full port, regular port and reduced port?

A: Full port (FB) has a bore equal to the nominal pipe size, minimizing pressure drop and allowing pigging. Regular port is a standard bore slightly smaller than full port. Reduced port (RB) has a smaller bore, resulting in a more compact and lighter valve at lower cost, with slightly higher pressure drop. All three are available for Class 800 forged globe valves.

Q4: What trim options are available for Class 800 globe valves?

A: Standard trim options include Trim 1# (13Cr disc and seat), Trim 5# (Half or Full Stellite), Trim 8# (13Cr disc, STL seat) and Trim 12# (SS304 or SS316). Trim selection depends on operating temperature, pressure and fluid erosiveness. For severe erosive service, Full Stellite (Trim 5#) is recommended.

Q5: What materials are available for Class 800 forged globe valves?

A: Standard body materials include carbon steel (A105, LF2), alloy steel (F5, F11, F22), stainless steel (F304, F316) and duplex stainless steel (F51). Material selection depends on operating temperature, pressure and fluid corrosiveness.

Q6: Is NACE MR 0175 available for Class 800 NPT/SW 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.