Remanufacturing Process for Control Valves and Transmitters

Brian Craig

May 30, 2022

Remanufacturing refers to the rebuilding of an originally manufactured but non-functional or worn out product. This is done to restart the product functioning to at least the minimum required level. Remanufacturing is often done using recycled or reused parts which keeps the cost at minimum. Usually, remanufacturing decisions for particular products are made by business owners based on their functional and financial feasibility and demand as well some other factors such as the durability and lifespan of the materials used in the product. Various engineered instruments such as control valves and transmitters can be remanufactured. This post discusses at length about remanufactured transmitters and control valves.

Remanufacturing Process for Control Valves and Transmitters

The process of valve remanufacturing begins with disintegrating or disassembling of the valve. or transmitter. Here, the quality control and testing procedures you use hold a lot of importance. The second important aspect of this process is the selection of reused but good quality parts, and ensure they are not obsolete. For instance, in case of valves, you would require reused nuts, bearings, bolts, etc. It is important to ensure they are not stained, rusted, and so on. Clean them well before use. The manufacturing process must meet the required industrial standard and regulations. Also, the final product must look as good as new. Once all the parts are ready and clean, reassemble them correctly. Give a coat of polish or paint if required. Now that the valves are ready, it must be tested for design and functionality.

Testing of Remanufactured Control Valves and Transmitters

Testing of remanufactured transmitters and control valves is as important as that for new ones. This ensures quality and flaws if any can be fixed on time. Here are a few relevant pointers.

Hydrostatic tests are performed on remanufactured controlled valves to check their dimensions and structural stability. This is a high pressure water test to identify any cracks or holes in the pressure section of the valve.
Seat leakage test, which is as per ANSI standards, is performed to check if the valve closes tightly as required and hence does not allow any leakage or fluid seeping out.
The quality of metals and alloys used in the valve and their suitability for certain types of solvents, corrosive elements, acids, and so on is checked by doing the positive materials identification test. This is done using x-ray florescence on metals.
The wall thickness of the valve is determined through ultrasonic testing.
There are other tests such as actuator spring testing which checks the rotation angles and linear movements of the actuator which facilitates motion in the valve.

Benefits of Remanufacturing Products

As mentioned, remanufacturing involves the use of recycled parts to entirely rebuild a device such as a control valve or transmitter. Remanufactured control valves and transmitters not only help save on costs but also offer several other benefits. Here are some benefits of using remanufactured products such as valves and transmitters.

While it is obvious that remanufacturing saves almost more than 50% of the cost than that of the original product, it also contributes to reducing environmental footprint. You actually save on the resources and energy required to entirely make a new product as you already have recycled or reused parts.
The manufacturing time is also less than that required for new products as some parts may be ready in your inventory.
Any good remanufacturer would offer you a warranty of two to three years on a remanufactured product.
Remanufacturing leaves scope for customization to suit new or specific requirements and at affordable pricing.

If your industrial application or process requires intermittent or continuous temperature, flowrate, or pressure monitoring, you would require good quality transmitters as well as control valves. Fisher control valves are a good option. Ensure you source them from a reputed and reliable supplier who understands your requirements and offers you the right type of control valve or transmitter. Also, when opting for a remanufactured control valve or transmitter, ensure the manufacturer does not use obsolete and faulty parts. The Transmitter Shop (TTS) is a distributor of superior quality remanufactured transmitters and control valves originally sourced from reputed brands such as Fisher Vee-Ball and so on. The company specializes in remanufacturing, reconditioning, and calibration of devices.