The sealing details of the Hydraulic Cartridge Valve Cap and Valve seat, Hassan returned to AAK 6 months later

China [CN]

The competition of hydraulic cartridge valves in the Türkiye market is very fierce, and the order is lost when the price is high. Hassan is from Türkiye. It has been 3 years since he purchased hydraulic cartridge valves from AAK. Last September, he inquired about a hydraulic cartridge valve equivalent to HydraForce standard part RV10-20A. Because AAK's quotation was 12% higher, he placed the order elsewhere, but he returned 6 months later. No matter how fierce the price competition for hydraulic cartridge valves is, everything goes to zero without manufacturing quality.

Last September, Hassan’s Company launched a hydraulic crushing hammer that has requirements on the pressure resistance and leakage resistance of hydraulic cartridge valves. As he is a loyal customer of AAK, we provided the price of the hydraulic cartridge valve RV10-20A on the same day. 1 week later, Hassan proactively informed us that the price of AAK hydraulic cartridge valves was 12% higher than other hydraulic cartridge valve manufacturers in Ningbo China. Although AAK did not get the order, I really like customers who truthfully inform us of the progress.

6 months later, Hassan suddenly asked me if the price for the hydraulic cartridge valve RV10-20A I quoted last time was still valid. After communication, it was learned that the hydraulic cartridge valve produced by the other manufacturer leaked, causing abnormal operation of the hydraulic crushing hammer. Their engineers reported that there were signs of leakage at the connection between the hydraulic cartridge valve cover cap and the valve seat. The original manufacturer blamed the hydraulic crushing hammer for causing too much vibration, resulting in loose connections and leakage. I asked Hassan back, did the hydraulic cartridge valves previously supplied by AAK leak at the connection? This is a small detail issue, as long as it is handled properly, there will be no leakage. At the end of April, we delivered 200 pcs of RV10-20A hydraulic cartridge valves, which solved his urgent need.

Yesterday, Hassan sent an email with plans to repurchase 200 pcs of RV10-20A hydraulic cartridge valves. If small details are handled improperly, they will become major issues. The AAK hydraulic cartridge valves have never had the leakage issue at the connection between the valve cover cap and the valve seat caused because of the vibration. The key is that before assembly of each hydraulic cartridge valve, Loctite thread anaerobic adhesive is applied to the threaded connection and the valve seat is tightened. However, most hydraulic cartridge valve manufacturers omitted this process.

Thread anaerobic adhesive is a single component sealing adhesive. When the adhesive surface is isolated from air and catalyzed, it can quickly polymerize and cure at room temperature, achieving 100% sealing. This thread anaerobic adhesive has properties such as heat resistance, pressure resistance, low temperature resistance, impact resistance, shock absorption, and anti-corrosion. As long as it is not in ultra-high temperature medium, it is 100% no leakage.

AAK hydraulic cartridge valves, with small details, vibration resistance, and no leakage, you can also give it a try!

AAK HYDRAULIC VALVES (620) 2023-07-04

https://www.aakindustry.com/info-detail/hydraulic-cartridge-valve-manufacturers-aak620