valve manufacturing process flow

Manufacturing process of valves

The manufacturing process of industrial valves is very complex and it also contains many variables. The raw materials that are used in the manufacturing are very critical to the final product. The tools that are used for processing are geometry, angle and shape of the valve.

How are valves manufactured?

To understand the manufacturing process of valves we should know different steps that are involved. This process consists of many dissolving metals, shaping materials, cleaning up and casting. The final product is processed and it is tested for quality as well as for pressure and temperature.

1.   Order and Design

To produce the industrial valves of high quality the industrial valve production is the process. The handcrafted components are involved in it. The time of the placing of order comes once a valve has been designed and approved by the customer. The order is placed by providence and the predetermined deposit is made after the customer’s improvement on the design.

2.   Inventory

The next step after the placing of the order is to start searching for raw materials. Different materials are needed as different parts of valves are needed to be manufactured. For the raw materials you can look at the inventory and if you didn’t find the material you have to obtain them from suppliers.

3.   Completing the checklist

The department after collecting the raw materials has to create the checklist to check all the essential things are available to start the production. Also the quality of the materials that are to be used in the making of products is checked by the quality assurance team.

4.   Production process

The Manufacturing of the stem, valve bodies and seat are involved in the production process of industrial valves. To produce these parts of valves the casting method is used. The forged method is used by some manufacturers. It involves sandblasting, machining, trimming, forging and surface treatment. A single piece can be used to make the valve bodies.

5.   Assembly

Following proper procedures is essential in the manufacturing process for valve assembly. The industrial valves major components should be cleaned and they should be assembled separately. After the production is completed all the parts need to be assembled to create a complete valve.

6.   Pressure test

After the assembly process the valves now have to go through the pressure test. The most important pressure test for valves is the hydrostatic pressure test. The test conduct is opening the valve and applying the pressure that is 50% higher than its working pressure. The sealing surface of the valve remains leak free and the pressure that is applied cannot drop below and it is rated as the working pressure.

7.   Quality and inspection control

The final and last step in industrial manufacturing is quality and inspection control. All the valves want to get inspected to make sure there is no error and leakage. Industrial valve manufacturers have to take quality assurance and inspection seriously. The inspector conducts the surface treatment inspection after sandblasting.


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