Forged Globe Valve 900LBS - 2500LBS (RJ Bonnet)

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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RJ Bonnet Forged Globe Valve 900LBS – 2500LBS (SW, NPT Ends) - API602, 1/2 inch to 2 inch

China Industrial RJ Bonnet (Ring Joint Bolted Bonnet) Forged Globe Valve 900LBS – 2500LBS Supplier, Exporter, Manufacturer. The API 602 RJ bonnet forged steel globe valve is designed for high-pressure and ultra-high-pressure small-bore throttling and isolation with Socket Weld (SW) and Threaded (NPT) ends. RJ bonnet uses a metal ring joint gasket for metal-to-metal sealing, providing superior leak-tightness and easy access for trim maintenance compared to PSB. OS&Y rising stem, handwheel operated. Plug disc and needle disc supplied. Full bore (FB) and regular bore (RB) available.

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). Various trim options available. NACE MR 0175 on request.

Specifications for RJ Bonnet Forged Globe Valve 900LBS – 1500LBS – 2500LBS

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

• Pressure Ratings: ANSI Class 900LBS, 1500LBS and 2500LBS (900# – 2500#)

• Constructions: OS&Y, RJ Bolted Bonnet (Ring Joint Bolted Bonnet)

• Bonnet Seal: Metal ring joint gasket — metal-to-metal sealing for high-pressure and high-temperature service

• Bore Type: Full Bore (FB) / Regular Bore (RB)

• Disc Type: Plug Disc, Needle Disc

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

• Threaded Ends: NPT, Screwed 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: 13Cr, Stellite, Stainless Steel (SS304, SS316) and various trim options

• Sour Service: NACE MR 0175 on Request

• Inspection and Test: API 598

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

✓ RJ bonnet uses metal ring joint gasket for metal-to-metal sealing, combining high-pressure leak-tightness with easy trim maintenance access

RJ vs PSB vs BB Bonnet Design Comparison

Feature	RJ (Ring Joint Bolted Bonnet)	PSB (Pressure Seal Bonnet)	BB (Bolted Bonnet)
Sealing Method	Metal ring joint gasket, metal-to-metal	Self-energizing by internal pressure	Compression by bolts and soft gasket
Sealing Performance	High, stable at high temperature	Tighter as line pressure increases	Standard, depends on bolt preload
Maintenance	Easy, bolts accessible	More complex, special tools	Easy, bolts accessible
Best Application	High-pressure, high-temperature, maintenance-prone	Ultra-high-pressure, critical leak-tightness	General high-pressure service

Reference: API 602, ASME B16.34. RJ bonnet combines high-pressure sealing performance with easy maintenance, ideal for high-temperature Class 900 to 2500 service. For ultra-high-pressure critical service, see the PSB page.

RJ Bonnet Forged Globe Valve Materials List

Material Type	Grade	Typical Application
Carbon Steel	A105, LF2	High-pressure steam, oil and gas, water injection
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: 13Cr, Stellite, SS304, SS316. Contact us for confirmed material certificate.

Class 900, 1500 and 2500 RJ vs Adjacent Pressure Classes

Pressure Class	Design Pressure (bar)	Design Pressure (psi)	Recommended Bonnet
Class 800	138	2,000	BB or WB
Class 900	153	2,220	RJ / PSB / BB
Class 1500	260	3,750	RJ / PSB / BB
Class 2500	430	6,250	RJ / PSB preferred

Reference: ASME B16.34. Design pressure values are for reference only and vary with material and temperature. RJ bonnet is preferred for high-temperature service; PSB is preferred for ultra-high-pressure critical sealing.

RJ Bonnet Forged Globe Valve 900LBS – 2500LBS (SW, NPT Ends) Dimensions

Reference: API 602 / ASME B16.10. RJ (Ring Joint Bolted Bonnet) design, SW and NPT ends. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.

RJ Bonnet Forged Globe Valve 900LBS – 2500LBS Applications

• High-Temperature Steam: Main steam isolation, steam injection and boiler blowdown on small-bore high-pressure lines requiring metal-to-metal sealing.

• Oil and Gas Wellhead: Wellhead control panels, gas injection and chemical injection lines at Class 900 to 2500.

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

• Petrochemical: Hydrocracking, hydrotreating and high-pressure reagent injection lines requiring frequent trim maintenance.

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

• Refinery: High-temperature hydrocracking and catalytic cracking unit isolation with metal ring joint sealing.

FAQ - RJ Bonnet Forged Globe Valve 900LBS – 2500LBS (SW, NPT Ends)

Q1: What is an RJ bonnet (Ring Joint Bolted Bonnet)?

A: RJ bonnet uses a metal ring joint gasket seated between the body and bonnet, creating a metal-to-metal seal when the bonnet bolts are tightened. Unlike PSB (which self-energizes by internal pressure), RJ relies on bolt preload. The metal gasket provides stable sealing at high temperatures, making RJ ideal for high-pressure high-temperature service requiring easy maintenance access.

Q2: When should I choose RJ over PSB or BB?

A: Choose RJ when you need high-temperature sealing stability, easy maintenance access, and moderate-to-high pressure service. Choose PSB when ultimate leak-tightness is critical and maintenance is infrequent. Choose BB for general high-pressure service with soft gaskets. RJ is a good balance between sealing performance and maintainability for Class 900 to 2500.

Q3: What is the difference between RJ gasket and RTJ flange facing?

A: RJ bonnet refers to the bonnet-to-body joint inside the valve using a ring joint gasket. RTJ flange facing refers to the end connection facing of the valve flanges. They both use ring joint (metal ring) sealing principle but apply to different joints. This pages valves use RJ bonnet with SW/NPT ends.

Q4: What end connections are available for RJ bonnet forged globe valves?

A: We offer Socket Weld (SW) per ANSI B16.11 and Threaded (NPT, Screwed) per ANSI B1.20.1. SW provides a permanent, full-penetration welded connection for high-pressure piping. NPT allows easy installation and removal. BW and flanged ends are also available on request.

Q5: What is the difference between Class 900, 1500 and 2500 RJ globe valves?

A: Class 900 has a design pressure of 153 bar (2,220 psi), Class 1500 reaches 260 bar (3,750 psi) and Class 2500 reaches 430 bar (6,250 psi). Class 2500 uses thicker walls, heavier trim and larger face-to-face dimensions than Class 900 and 1500. RJ bonnet design is applied across all three classes.

Q6: Is NACE MR 0175 available for RJ bonnet 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.