A 3-piece forged steel high-pressure ball valve refers to a high-strength ball valve with a three-piece body structure connected by bolts. Its closing element is a precisely machined ball, which is rotated around the valve body's centerline by the valve stem to achieve rapid shut-off, distribution, or flow switching of the medium.
3-piece forged steel ball valves are easy to operate, compact, reliably sealed, simple in structure, and easy to maintain. The sealing surface and the ball are always in a closed state, making them less susceptible to erosion by the medium. They are widely used in various industries.
The valve body is formed using a forging process, and the material can be stainless steel (such as F304, F316) or carbon steel (such as A105). Forged steel materials have characteristics such as dense structure, excellent mechanical properties, and strong impact resistance, making them particularly suitable for high-pressure and high-strength working conditions.
According to the needs of the pipeline system, various connection methods can be selected, such as threaded connection(NPT,BSP-P(G),BSPT(Rc)), butt welding(BW), socket weldin(SW)g, or flange connection, offering flexible installation and strong adaptability.
The design pressure can reach up to 1500LB, making it suitable for high-pressure transportation systems in fields such as petroleum, chemical industry, and natural gas.
1) Design and Manufacturing Standards: BS5351, MSS SP-118
2) Connection End Dimensions: ANSI B16.10, JB/T1715
Socket Weld End Dimensions: ANSI B16.11, JB/T1715
Threaded End Dimensions: ANSI B1.12.1, JB/T7306
Butt Weld End Dimensions: ANSI B16.25, JB/T12224
3) Testing and Inspection: API 598
4) Material Standards: ANSI/ASTM
| No. | Part Name | Carbon Steel | Stainless Steel | |||
| 1 | Body | A105 | F304 | F304L | F316 | F316L |
| 2 | Ball | SS304 | F304 | SS304L | SS316 | SS316L |
| 3 | Seat | PTFE、RPTFE | ||||
| 4 | Gasket | SS304/SS316 + Graphite | ||||
| 5 | Cap | A105 | F304 | F304L | F316 | F316L |
| 6 | Nut | A194-2H | A194-8 | A194-8M | ||
| 7 | Bolt | A193-B7 | A193-B8 | A193-B8M | ||
| 8 | Stem | SS304 | F304 | SS304L | SS316 | SS316L |
| 9 | Thrust Washer | PTFE、RPTFE | ||||
| 10 | O-ring | Viton | ||||
| 11 | Gland | SS304 | SS304 | SS304 | SS316 | SS316 |
| 12 | Bolt | 1035 | ||||
| 13 | Nut | Stainless Steel | ||||
| 14 | Handle | WCB、Stainless Steel | ||||
| 15 | Limited Plate | 1025 | ||||
| 16 | Prevent Fire Ring | SS304、SS316 | ||||
| 17 | Packing | Graphite | ||||
| 18 | Spring | SS304、SS316 | ||||
| DN mm | NPS(Inch) | L mm | D mm | H mm |
| 15 | 1/2” | 92 | 13 | 66 |
| 20 | 3/4” | 112 | 19 | 72 |
| 25 | 1” | 126 | 24 | 100 |
| 32 | 11/4” | 129 | 30 | 105 |
| 40 | 11/2” | 152 | 38 | 112 |
| 50 | 2” | 176 | 49 | 122 |
As a company specializing in the research, development, and manufacturing of stainless steel and carbon steel ball valves, Wenzhou Joepai Valve Co., Ltd. is located in the Binhai Industrial Park of Longwan District, Wenzhou, known as "China's Valve City." The company boasts a modern production base and a comprehensive quality control system. The company is equipped with:
Professional R&D center and CNC machining equipments
Advanced testing instruments (such as computer multi-element analysis instruments, Leeb hardness testers, and thickness gauges)
Pressure testing machines, life cycle testing machines, and other full-process testing platforms
Relying on rigorous processes and continuous innovation, Joepai Valve ensures that every 3PC forged steel high-pressure ball valve meets high-standard performance requirements, providing customers with safe, reliable, and durable valve solutions.
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