Forged Stainless Steel 3 Piece Flange Trunnion Ball Valves

JOEPAI Forged Stainless Steel 3 Piece Flange Trunnion Ball Valves consist of three components, facilitating disassembly and maintenance. Internal parts can be replaced without dismantling the entire pipeline, significantly reducing maintenance time and costs.The valve body is made of ASTM A182 F304 or F316L stainless steel, featuring high strength and good corrosion resistance. In industrial applications involving harsh conditions such as high pressure, high temperature, or corrosive media, forged stainless steel ball valves are often a more reliable choice than cast valves. Unlike most ball valves that use casting processes, forged valves significantly improve their structural strength and pressure resistance through a unique manufacturing method. Choose a forged ball valve for severe conditions where safety, reliability, and maximum strength are non-negotiable.

Product Features

• Forged Steel Material: The valve body, ball and stem are all made of high-quality forged stainless steel (F304, F316) , processed through precision forging to eliminate casting defects, ensuring high strength and good corrosion resistance.

• Full Port Design: The full port design optimizes the fluid flow path, reduces pressure loss, and improves flow control efficiency.

• Ball valves using a trunnion-mounted (fixed) ball design to ensure the ball remains stable during operation, reducing wear on sealing components..

• Flange Connection: Adopts RF (Raised Face) flange connection compliant with ASME B16.5 standards, ensuring reliable and tight installation.

• Reliable Sealing Performance: The valve seat uses PTFE ,PEEK or metal sealing materials to ensure zero-leakage sealing under high-pressure and high-temperature conditions.

• Fire-safe Design: Complies with API 607 fire safety standards, maintaining sealing performance even in extreme conditions like fires to ensure system safety.

• Anti-static and Blow-out Proof Stem Design: Equipped with anti-static devices and blow-out proof stems to enhance electrical safety and operational stability.

• Multiple Operation Modes: Optional manual operation or automated control such as pneumatic, electric, or hydraulic actuators to meet requirements of different application scenarios.

• Low Flow Resistance Design: The smooth internal flow passage reduces flow resistance, effectively lowering energy consumption and improving system efficiency.

Technical Specifications

• Nominal Diameter: 2"~36" (DN50 to DN900)

• Nominal Pressure: 600LB to 2500LB

• Working Temperature: -29℃ to 425℃

• Material: Forged Steel (A105,F304,F316)

• Sealing Materials: PTFE, RPTFE, PEEK, metal seals

• Flange Connection as per ASME B16.5 standard

• Operation Modes: Manual, Pneumatic, Electric, Hydraulic (optional)

• Design Standards: API 608, ASME B16.34

• Testing Standard: API 598

Application Fields

• Oil & Gas: Used in high-pressure oil/gas transmission pipelines, refineries, and natural gas processing facilities.

• Chemical Industry: Suitable for handling corrosive media like acids, alkalis, and salt solutions.

• Power Industry: Applied to cooling water systems and steam pipelines in power plants.

• Water Treatment & Municipal Water Supply: Ensures water quality safety and stable system operation.

• Offshore Engineering: Performs excellently in seawater environments, suitable for fluid control systems in offshore platforms and ships.

Main Parts Materials 

Body & End Piece: 

Forged Carbon Steel ASTM A 105;

Forged Stainless Steel ASTM A 182 F 304 / F 304L;

Forged Stainless Steel ASTM A 182 F 316 / F 316L;

Alloy Steel ASTM A 182 F 11 / F 22

Ball & Stem: 

ASTM A 182 F304 /  F316 (SS 304 / SS 316)

ASTM A 182 F304L /  F316L (SS 304L / SS 316L)

Ball Seat & Body Seal:

PTFE Virgin / 25% Glass Filled - GFT / Carbon Filled - CFT

PEEK / Delrin / Grafoil - Graphite Ring

Gland Packing:

PTFE Virgin / 25% Glass Filled - GFT / Carbon Filled - CFT

Grafoil - Graphite Ring

Stud & Nut:

ASTM A 193 GR. B7 / A 194 GR. 2H

S.S. 304 / S.S. 316

Main Dimensions

Class 600LB                                                                                                                                                                                                                                                                                                                                      Unit：mm   

Class 900LB                                                                                                                                                                                                                                                                                                                                     Unit：mm