stainless steel manual Industrial Valves related quality control review

manual gate valves according to the specification of stainless steel parts and equipment should be accord with the requirement of test about quality control of pressure and temperature.

measuring and test equipment:

is used to check the material or other equipment, test and inspection equipment within the prescribed time interval according to the manufacturer's documentation and relevant industry standards of recognition on a regular basis, control, calibration and adjustment, to keep the accuracy according to the requirements of this specification.

equipment size measuring equipment shall be in accordance with the manufacturer's written specification for control and calibration, to keep the manufacturers specification requires precision.

stainless steel manual valve pressure measurement equipment:

1. Type and precision of test pressure measuring equipment should be a pressure gauge and pressure sensors, the accuracy at least shall be the nominal full scale & plusmn; 2. 0%.

2。 The size and range should be in the range of pressure gauge of the pressure - 25% Measuring pressure within 75% range.

you should use a standard pressure measurement device or dead weight tester, in 25%, 50% and 75% of the scale, to calibrate pressure measurement equipment on a regular basis. Calibration procedures:

the calibration interval should be according to the degree of repeatability and accuracy of using or use to determine, should be part of the manufacturer procedure.

stainless steel manual valve temperature measuring equipment:

when using temperature chart, temperature range should be able to indicate the temperature fluctuations.

the general requirements of quality control:

all the detailed rules for the quality control should be file, and should include the appropriate methods and acceptance criteria.

quality control rules:

nonconformity material manufacturer should have a control is not in conformity with the technical conditions and the manufacturer written specification of materials, parts and products of written procedures.

welding repair instructions:

all weld repairs must use the manufacturer process was written test methods and acceptance criteria.

specific quality control of products and parts:

1. Closed

closed bolt onto written specifications conform to the specifications and the manufacturer's requirements.

2。 Other parts

should be for other components, which can identify they should conform to the requirements of this specification and the manufacturer written specification.

3。 After assembly equipment

all assembled equipment requirements for the series number.

record requirements:

1. Welding procedure specification.

2。 Welding procedure qualification records.

3。 Welding qualification record.

4。 Stainless steel gate valve nondestructive testing personnel qualification record manually.

5。 Design documents.

Wow, this sounds like a bit of a cruel question, but it is a vitally important question to ask yourself if you are struggling with your resilient seal gate valve and you would like to stop the wedge valve problem.
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