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Retest Of High Pressure Gas Cylinder

Valve

Implemented System

Information on the implementation of system for retesting of container valve built in diaphragm

Execution of retesting of container component parts that maintains airtightness with diaphragm (implemented on '12. 5. 25)
Although the container valve attached to the containers with contents volume of less than 125L was discarded in the past, container valves with built-in diaphragm can be reused after having passed the retesting.

Container component parts subjected to retesting

Container component parts for the maintenance of the air tightness through diaphragm made of KS D 3698 (cold rolled stainless steel plate and tape) STS 204 or other metals with equivalent or better corrosion resistance

※Article 3-3-3 of the integrated announcement of the standards for the safety management of pressurized gas as amendment on('12.2.13)
- Container valve built in diaphragm is used mostly for special applications including semiconductor industry, etc.

Structure of valve and diaphragm container valve for general industrial use

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Structure of valve and diaphragm container valve for general industrial use
For general industries For semiconductors
Valve O-ring Valve Diaphragm

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Standards for retesting of container component parts for pressurized gas [KGS AA316]

Equipment for each of the processes of retesting of container component parts

Standard process for retesting of container component parts

Current Status of Facilities Owned

Airtight operation function test




Vacuum operation performance test

Information On Product Testing

NKTECH Co., Ltd., an institution specializing in gas testing, executes not only retesting of the industrial pressurized container but also retesting of ultra-large container and air respirator container as well as retesting of valve for special gas container with built-in diaphragm. Having established ourselves as an institution specializing in testing of pressurized container and container valves, we shall ardently strive to remunerate the passionate support our clients have given us by assertively fulfilling the requirement of our clients.