Newbie seeking advice: performance, pressure resistance, temperature resistance, etc. of card sleeve connection types
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I would appreciate some advice: in what situations is this type of connection suitable for use? What are the specific ranges for its voltage and temperature resistance?
GBT 3765-2008 Technical Requirements for Card-Type Pipe Fittings 【Note: Due to issues with the attachment function, the file cannot be uploaded; please search for it on Baidu.]
The pressure guiding tubes of measuring instruments can mostly be connected using bayonet fittings.
The pressure of the sleeve is determined by the sleeve itself, but there is a range within which it can be effective; if the sleeve is too thick, it cannot penetrate deep enough and thus cannot provide a proper seal. The main advantage of the cartridge is its ease of installation, the ability to reinstall it, and its low space requirements. Most small instrument pipelines can be used for this; normally, those with a diameter of 1/2 inch or less can handle a pressure of 6000 PSI, which is equivalent to 41.4 MPa. As for temperature, ranges from -54 to 540 degrees are feasible (stainless steel)
I have a detailed document titled \"American ASTM-F1387 Certificate\" – 18-20619-Hy-lok Final report-Oct2015 rev 2 (ASTM-F1387). It contains various test reports related to Korean HY-LOK coupling fittings; the requirements for these tests are extremely strict, and only 2 brands in the world are able to meet them (HY-LOK is one of them):victory:.
Could you provide this document as well?
Do you have any brand recommendations that can withstand 400°C and 20 bar pressure, as well as being able to go through more than 10 cycles of disassembly and reassembly?
Sure, please send me an email at meijiecheng@126.com
Foreign brands such as Swagelok, Parker, Hamlet, and Safelok are all acceptable; there are also many domestic brands, but they must be produced by the company itself, such as Fitok. Many domestic brands purchase their card sleeves from external suppliers. I previously tested 1-inch card sleeves supplied by a professional supplier in Zhejiang, as well as those from Yangzhou. The outer tubes of these card sleeves seemed to be of good quality, but problems arose during testing – the quality was very inconsistent; some card sleeves were able to hold in place while others could not. During one test, a card sleeve had to hold a weight of 50 kilograms, yet it still came loose, causing the testing tank to be damaged. The installation method is consistent in all cases: it should be carried out in accordance with Swagelok’s requirements for the use of compression fittings in high-pressure applications. First, tighten it by hand, then use a wrench to tighten it until the fitting can no longer rotate, and finally apply a mark by tightening it an additional 1 1/4 turns. Many card sleeves were removed, and the front and rear sleeves fell off the card sleeve directly.