On December 10th 2017, C Tech Science & Technology Co., Ltd has finished the Metal Seated Ball Valve final manufactory and test, it will be shipped for the China Nonferrous Metal Mining Group which is located in Zambia. C Tech Science & Technology Co., Ltd has very rich experience and technology to produce the metal seated floating ball valve which was used for the Ore Pulp Medium. C Tech company has its own technical strengthens focus on stem and seat design, Ball and Seat Coating, Material Control, Machining, Assembly and Tolerance Control.

1. Valve Design and Manufactory Standards

ASME: American Society of Mechanical Engineers
ASME B31.11          Slurry Transportation Piping Systems
ASME B1.20.1        Pipe Threads, General Purpose (Inch)
ASME B16.10         Face-to-Face and End-to-End Dimensions of Valves
ASME B16.11          Forged Fittings, Socket-Welding and Thread
ASME B16.34         Vales – Flanged, Threaded, and Welding End
ASME B16.5           Pipe Flanges and Flanged Fittings
ASME V                  Nondestructive Examination
ASME VIII             Rules for Construction of Pressure Vessels
API: American Petroleum Institute
API 6D                    Specification for Pipeline and Piping Valves
API 1104                 Welding of Pipelines and Related Facilities
ISO 9001                Quality Management Systems-Requirements
NACE: National Association of Corrosion Engineer
MSS: Manufacturers Standardization Society of The Valve and Fittings
MSS SP-53    Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components. Magnetic Particle Examination Method
MSS SP-54    Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components. Radiographic Examination
MSS SP-55    Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components. Visual Method for Evaluation of Surface Irregularities
MSS SP-61    Pressure Testing of Valves
MSS SP-93    Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components. Liquid Penetrant Examination Method
MSS P-94     Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components. Ultrasonic Examination Method

2. Technic Parameters of the Ball Valve

2.1. All the ball valves are designed and manufactured to meet the long service life and easy maintain request.
2.2. Ball Valve Structure
≤DN50 Floating Ball Valve meet the Bidirectional Sealing
≥DN80 Trunnion Mounted Ball Valve meet the Bidirectional Sealing and Stem Bearing Protection request.
2.3. Main Material of the Ball Valve

Parts Material Request
Valve Body A105 Forged Steel, The runner surface was coated by HVOF Tungsten Carbide, make sure the coating thickness≥0.3mm, Hardness ≥HRC68.
Valve Ball 17-4PH forged steel, solution treatment, Ball surface coated by HVOF Tungsten Carbide and Refusion Treatment. The effective coating thickness ≥ 0.25mm, Hardness ≥HRC68.
Valve Seat 17-4PH forged steel, solution treatment, Seat surface coated by HVOF Tungsten Carbide. The effective coating thickness ≥ 0.25mm, Hardness ≥HRC68.
Valve Stem 17-4PH forged steel, solution treatment.
Seat Spring Inconel X-750 With Heat Treatment
Valve Actuator AUMA