Forged Gate Valve 900LBS - 1500LBS (Sw & Npt Ends)

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Forged Gate Valve 900LBS – 1500LBS (SW and NPT Ends) - API602, 1/2 inch to 2 inch

China Industrial Forged Gate Valve 900LBS – 1500LBS Supplier, Exporter, Manufacturer. This page covers Class 900 and Class 1500 forged gate valves with Socket Weld (SW) and Threaded (NPT) ends, manufactured per API 602. Solid wedge, OS&Y rising stem, bolted bonnet or welded bonnet construction. The Class 900 design is ideal for high-pressure steam and oil and gas service, while the Class 1500 design is engineered for ultra-high-pressure critical applications. Sizes 1/2 inch to 2 inch (DN15 to DN50). Full bore and reduced bore available. Body materials include carbon steel (A105, LF2), alloy steel (F5, F11, F22), stainless steel (F304, F316), duplex steel (F51, F53). NACE MR 0175 available. Ideal for high-pressure steam injection, gas injection, wellhead control panels and small-bore high-pressure piping.

Specifications for Forged Gate Valve 900LBS – 1500LBS (SW, NPT Ends)

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

• Pressure Ratings: ANSI Class 900LB and Class 1500LB (900# – 1500#)

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

• Bore Type: Full Port (FB) / Reduced Port (RB)

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

• Socket Weld Ends: Per ANSI B16.11, permanent leak-tight connection for high-pressure small-bore piping

• Threaded Ends: NPT per ANSI B1.20.1, easy installation and removal without welding

• Body Materials: A105(N), LF2, F5, F11, F22, F304, F316, F51, F53 or Equivalent

• Trim Materials: 13Cr, STL, SS304, SS316, F6a, 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)

✓ Class 900 and 1500 cover the medium-to-high pressure range for forged SW/NPT gate valves, bridging general high-pressure and ultra-high-pressure service

Class 900 – 1500 Forged Gate Valve Material Comparison

Body Material	Grade	Temp. Range	Best For
Carbon Steel	A105, A105N, LF2	-29°C to 425°C	High-pressure steam, oil and gas, water injection
Alloy Steel	F5, F11, F22	Up to 593°C	High-temperature steam, power plant, refinery
Stainless Steel	F304, F304L, F316, F316L	-196°C to 425°C	Corrosive media, chemical, offshore
Duplex Stainless Steel	F51, F53	-50°C to 300°C	High-chloride, seawater, sour service

Reference: API 602, ASME B16.34. Temperature range varies with pressure class and trim material. Contact us for confirmed material certificate.

Class 900 and 1500 vs Adjacent Pressure Classes

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

Reference: ASME B16.34. Design pressure values are for reference only and vary with material and temperature.

Forged Gate Valve 900LBS – 1500LBS (SW and NPT Ends) Dimensions

NPS (inch)	DN (mm)	L (mm)
1/2″	15	111
3/4″	20	111
1″	25	120
1-1/4″	32	120
1-1/2″	40	140
2″	50	178

Reference: API 602. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.

Forged Gate Valve 900LBS – 1500LBS Applications

• High-Pressure Steam: Steam injection lines, boiler blowdown, turbine bypass and main steam isolation on small-bore high-pressure piping.

• Oil and Gas: Wellhead control panels, gas injection lines, chemical injection and sampling systems.

• Power Generation: Ultra-high-pressure steam service, boiler drain, air vent and sampling line isolation.

• Petrochemical: Hydrocracking, hydrotreating and high-pressure reagent injection lines.

• Chemical Processing: High-pressure reagent feed, catalyst injection and corrosive fluid isolation.

• Hydraulic Systems: High-pressure hydraulic control panels, test stands and oil and gas hydraulic power units.

FAQ - Forged Gate Valve 900LBS – 1500LBS (SW and NPT Ends)

Q1: What is the difference between Class 900 and Class 1500 forged gate valves?

A: Class 900 has a design pressure of 153 bar (2,220 psi), suitable for high-pressure steam, oil and gas transmission. Class 1500 has a design pressure of 260 bar (3,750 psi), designed for ultra-high-pressure steam, gas injection and wellhead equipment. Class 1500 uses thicker walls and heavier trim for more demanding service.

Q2: Why are Class 900 and 1500 combined on this page?

A: Class 900 and Class 1500 share the same SW and NPT end connection standards and similar body construction in API 602. Combining them on one page helps engineers compare the two pressure classes directly and select the right one for their application without switching pages.

Q3: When should I choose SW over NPT for Class 900 and 1500?

A: Choose Socket Weld (SW) for permanent, leak-tight high-pressure installations where welding is possible and no future disassembly is expected. Choose NPT (Threaded) for applications requiring easy installation and removal. For Class 1500, SW is generally preferred for critical high-pressure service.

Q4: What is the difference between full port and reduced port in Class 900 and 1500?

A: Full port (FB) has a bore equal to the nominal pipe size, minimizing pressure drop and allowing pigging. Reduced port (RB) has a smaller bore, resulting in a more compact and lighter valve at lower cost, with slightly higher pressure drop. Both are available for Class 900 and 1500 forged gate valves.

Q5: What materials are available for Class 900 and 1500 forged gate valves?

A: Standard body materials include carbon steel (A105, A105N, LF2), alloy steel (F5, F11, F22), stainless steel (F304, F304L, F316, F316L) and duplex stainless steel (F51, F53). Trim options include 13Cr, STL, SS304, SS316 and F6a. Material selection depends on operating temperature, pressure and fluid corrosiveness.

Q6: Is NACE MR 0175 available for Class 900 and 1500 SW/NPT gate 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.