Different valves have different functions in the oil and gas sector. Therefore, the manufacturers use different materials to make these valves. They pick the material depending on the role and applications of the valve. Here’s a summary of the most common materials used in manufacturing these valves.
Cast Steel
API 6A valve manufacturers use cast steel as one of the materials to make them. They make the valves by pouring molten steel into a mold and letting it solidify under controlled conditions. If the process is done right, the valves are strong. However, if the molten steel does not form evenly, it’s susceptible to holes and tears. Therefore it requires continuous monitoring and quality control.
Stainless steel
Stainless steel is a non-reactive metal and is good for making valves. Each gauge needs a specific mix of metals such as nickel, chromium, or molybdenum. Valves from this material are suitable for handling halide gasses and saline marine waters. In most cases, API 6A valve manufacturers substitute stainless steel with brass.
Forged steel
Making valves with these materials is done by shaping metals using extreme heat and mechanical equipment. Then, the steel is bent and shaped to form a valve using special tools.
The main benefit is that heat tends to harden the metal, making it stronger and longer-lasting. However, in this process, valves are made as a whole, making the connection of some elements hard and can cause leaks. In addition, these valves are more costly due to the extra work that must be done.
Valves work under harsh conditions, and selection of material is essential. So, before settling for a valve, know the function and determine the material to manufacture it. This will ensure you have a valve made of the right material for the intended purpose.
