Experience - Expertise - Quality
BJ manufactures a complete line of quality API 6A valves, and can provide the exact valves and actuators to meet the most demanding application requirements. BJ valves are available in an extensive range of designs, materials, sizes and pressure classes and are in full conformance with API and NACE specifications. All valves are designed in accordance with API 6A & 6D, where applicable with ASME VIII Div.1.
The BJ family of API valves provides positive shut-off of fluids and gases under extreme service conditions.
BJ uses only high-quality forged materials inspected & tested to International Standards and utilizes advanced manufacturing technology with special emphasis on safety, quality, and long service life of our products, to ensure that our clients receive the "best in class" products available from us at a competitive price and delivered on time.
The forging material can ensure the best rigidity and strength under maximum rated operation pressure without inherent flaw of cast. Other properties found in forging include greater impact resistance, resistance to fatigue cracking, particularly when cycling at either high or cryogenic temperature. Over designed wall thickness and adaptation of high strength tie bolts are convenient for valve maintenance and sufficient to bear the stress of pipe. The internal parts of valve are carefully designed and selected to ensure reliability under all kinds of work conditions.
Since a variety of materials are available, BJ valves can be used with various fluids and gases including petroleum based oils and extreme sour gas service.
BJ valve design is developed using the latest software based analysis tools. At the design stage, all projects are analysed using 3D solid modeling tools.
Benefits include reduction of development time and costs, improved product quality, and ability to solve field problems for customers. Product flexibility and accuracy is assured.
Finite Element Analysis (FEA) is a very important step of the development stage and ensures the best possible performance requirements. Valves operational problems, pressure/temperature related deformations and flow-related forces within a valve can be evaluated.
BJ uses the FEA for predicting failure due to unknown stresses by showing problem areas in a material and allowing designers to see all of the theoretical stresses within. This method of product design and testing is far superior to the manufacturing costs which would accrue if each sample was actually built and tested.
During any analysis project, it is the responsibility of the BJ Engineering department to verify that analysis results conform to the physics of the problem under study. Understanding the response of a structure or manufactured product allows effective design decisions to be made in developing structures and products that are functional, meet all engineering requirements, and can be manufactured and assembled.
Computational Fluid Dynamics (CFD) is used to simulate operating flow conditions. Evaluation of Valve CV coefficient and convective heat transfer coefficient takes place in the design stage. The following figure shows the heat simulation:
General main features of BJ Valves
The full round bore design allows the fluid to flow through the valve smoothly without causing turbulence and minimize pressure drop. The absence of surface cavity eliminates the accumulation of foreign matter and allows passage of tools through the valves.
Quality Product Specification Levels
Quality levels from PSL1 to PSL4 available.
Wide Range of Trim Options
Valve trims for any service, including H2S, CO2, high - low temperature and extremely corrosive environments.
Inspection and Testing
All valves are subjected to a routine basis of different non-destructive testing, like dye penetrate test on butt weld ends and on all hard faced and cladding areas.
Non-destructive tests are also carried out on the critical areas as defined by ASME B16.34. Optional examinations like:
Radiographic Magnetic participles Ultrasonic
Personnel performing NDT are trained and qualified.
All valve is subject to a pressure test in accordance with the standard API 6A & 6D.
The rated pressure for the applicable pressure class is in accordance with API 6A & 6D.
Marking and Identification
Each valve is identified on proper name plate and on valve body as required by API 6A & 6D, MSS-SP 25, ASME B16.34 Name plate carries all information on rating, size, valve body and trim material, customer tags. Body marking includes material designations and heat code and our trade mark.
Valves Offered by BJ
*Fire Safe test on a BJ valve.