UZTPA, LLC pays closest attention to the quality of its products

Strict quality control is implemented to ensure high standards at all production stages and areas: from incoming control of materials and components, including ultrasonic testing, inter-operational control of all manufacturing procedures to 100% testing of all manufactured valves at six test sites. Each valve is subject to acceptance testing with a log entry into the product certificate.

Basic approaches to quality control:

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Output control at partners’ enterprises

This type of quality control is carried out at the stage of ordering components and metal assortment. It includes the following steps:

  • audit of the partner enterprise by specialists of UZTPA LLC
  • verification of purchased components for compliance with design documentation
  • close work with the quality control department of the partner-enterprise to prevent defects and exclude the likelihood of delivery of low-quality parts to the UZTPA plant
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Incoming control at the UZTPA, LLC

This type of control is carried out at the stage of delivery of components and metal assortment to the UZTPA plant and includes:

  • visual measurement control for compliance with the requirements of design documentation
  • verification of certificates and permits of the supplier of materials and components
  • selective sampling for the analysis of chemical composition and complex mechanical properties to confirm the characteristics of the finished product
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Internal control, inspection, and tests at the enterprise

Control, inspection and tests are carried out at every stage of the production cycle of products. They include:

  • inter-operational control for compliance with the technological procedures
  • visual and instrumental inspection of parts for compliance with design documentation
  • control and inspection at the stage of welding
  • testing of each unit of production at the certified test benches
  • checking the quality of the paint coating and finished products packaging
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Product testing and quality control at the enterprise

UZTPA LLC conducts a complete cycle of the industrial valve testing in accordance with the GOST 33257-2015 standard. Each valve at the plant is tested regardless of diameter

The tests are carried out in assembly with a standard control element: a lever, gearbox, or an electric actuator. On the top of that, testing of valves with stem extension is carried out in assembly, as well, since the UZTPA up-to-date test benches allow testing assembled shut-off valves with stem extension up to 3 meters high and a gearbox or electric actuator installed

Setting and adjustment of ball valves is carried out as per the UZTPA technology by the qualified specialists of the quality control department

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There are following types of tests performed at the Ugreshsky industrial valves plant:

  • hydraulic tests for strength and density of welded seams and joints operating under pressure, as well as for tightness in relation to the external environment in accordance with GOST 33257-2015 and pressure PN 1.5;
  • pneumatic valve tightness tests with a pressure PN 1.1 in accordance with GOST 33257-2015;
  • performance tests at differential pressure in accordance with GOST 33257-2015.

On the top of that our specialists use ultrasonic testing to carry out the non-destructive testing of welded seams and cast billets on the plant premises

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