Control Valve

Step 1: To Purchase Raw Materials
When our drawing, datasheet, and commercial offer get customers approved, we will send the Proforma Invoice to our customers and wait for them to sign back or release the contract for us. After the advance payment/deposit kicks into our account, we will start the procurement of raw materials for this case.

Step 2: Quality Control
All the raw materials are inspected by our quality control department before raw materials into the manufacturing process. If quality is passed, we will stamp a ‘PASSED’ label on the parts.

Step 3: Machining
Using the production process cards issued, the warehouse supervisor delivers the raw materials to the processing workshop. After processing is completed, quality inspectors will conduct another inspection and measure the dimensions.

Step 4: Process Inspect
After all the parts passed dimensionally and visually, the valve body, and the bonnet is transferred to the test bench for a hydrostatic test, in case there is zero leakage of the bonnet and body before assembly.

Step 5: Assembly Procedure
The qualified body and bonnet are transferred to the assembly area. In case of parts uniformity and interchangeability, the body and bonnet are drilled on the machine.

Step 6: Test & Inspect Industrial Valves
After the complete assembly, we are going to transfer the valve to the hydrostatic bench for the shell test, low-pressure test, and seat leakage test. Witness by QA colleague, in accordance with drawing to see if the result meets relevant standards. If qualified then transfer to the painting area.

Step 7: Painting or Finishing
Use a grinder or sander to make better surfaces and smooth finishing based on customers’ requirements. The painting color number should be the same as the customer requested. If for corrosion environments, the coating thickness must according to the relevant standard.

Step 8: The Third Party Inspect & Project Record
After the test & inspection, painting, and functional test, the customers informed the third party to arrange the witness and inspection. And our quality assurance department records project name, tag number, model, process quality checks, furnace number, and all the details into our system.

Step 9: Packing
Commonly we use ply-wooden cases to packaging industrial valves. The catalog, manual book, and maintenance guidelines will be along with the goods if the customer needed.

Step 10: Shipment
Before shipment, we will double-check the details with the customer. Once the customer confirms, the goods will be finally shipped and delivered to the freight forwarder.