stainless steel gate valve related quality control requirements

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 specification.

stainless steel gate valve pressure measurement:

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.

3。 Calibration procedure.

4。 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 gate Industrial Valves temperature measurement:

when using temperature chart, temperature range should be able to indicate 2 ℉ ( 1℃) Temperature fluctuations.

stainless steel gate valve for quality control of general requirements:

1. Quality control conditions.

2。 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.

3。 Weld repairs.

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 specification and the manufacturer written specification.

3。 After assembly equipment

after the general assembly equipment quality control requirements including according to the requirements of the pressure test.

all assembled equipment requirements for the series number.

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