QUALITY CONTROL
Quality Control
Deye’s Test Procedure to As per TPI to Secures the valve quality
-Casting checking. The QC team would check casting item by item from appearance, wall thickness, quantity, size and original material report from foundry according to international standards to avoid the unqualified ones.
-Machining checking. During this period, QC team will check machining accuracy, face to face dimension, flange drilling to find potential problems as early as possible.
-Assembly checking. After assembly, QC will do an overall test to the valve. Visual checking includes cleanness of inner chamber, bright and clean appearance, and clear marking on the body. Dimension checking contains face to face dimension, the critical dimension of connection end. Pressure testing includes hydrostatic testing of sealing and body and air test to the sealing.
--Dimension Checking: QC will test the flange drilling strictly as per ANSI B 16.5 Or other standard requirement. Face to face dimension is strictly as per ANSI B 16.10 or other standard required.
Height of the valves and hand wheel dimensions as per technical drawings agreed on the contract.
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-Hydrauic Test and air Test.QCwill test the seal leakage,back seat an Shell strictlyas as per API598 or EN1226 orother standard agreed on the contract.Procedure
is standard and rest result is reported.
-Painting&Packing.The painting color and sprayingeffect willbe checked.QCwill make sure packingis per contract Request.The clean valve is placed orderly in
strong wooden box with clear shipping mark byfilling enough soft material to avoid collision.
-Reports.Ate Testing,you willget a detailed report from the casting pieces cecking to the finished products before shipments.Hydraulic Test and air test details
with photos and video will showto customers for confirmation before shipment.
Years of valve exporting experiences and continuous improvements,DEYE Quality Control System will continue to work hard and become perfect.
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Valve spare parts Testing is crucial for ensuring safety, performance, and reliability by verifying that they function correctly and meet specifications before installation. This proactive maintenance prevents catastrophic failures, ensures accurate flow control, maintains system efficiency, and avoids costly downtime from issues like leaks or malfunctions. It also helps meet regulatory compliance requirements.
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Valve non-destructive testing (NDT) uses techniques like ultrasonic, radiographic, magnetic particle, and liquid penetrant testing to find internal flaws and surface defects without damaging the valve. This process is essential for ensuring safety, reliability, and quality during manufacturing and maintenance, allowing for early detection of problems like cracks, corrosion, or casting defects. NDT helps prevent costly downtime and potential system failures by verifying the structural integrity of valves for critical applications.
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