One-piece ball valve, why can't it withstand high pressure? Why did it leak before being used a few times? The reason may be that you have chosen the simplified version or products from manufacturers who have not mastered the core technology.
The one-piece ball valve is widely used due to its compact structure, space saving, and no cavity inside the valve body (there will be no residual medium inside the valve body). However, have you ever encountered a situation where the valve starts leaking when the pressure is high, or where this one-piece valve starts leaking after only a few uses? What's the reason? Let's talk about the key elements of this valve structure below.
Firstly, the term 'one-piece' refers not only to the valve body being one-piece, but also to the valve seat and ball being one-piece. The key here is the one-piece valve seat and ball, The precise control molding technology ensures that the valve seat is formed on the valve ball, and also guarantees a good fit between the wrapped one-piece valve ball and seat component and the one-piece valve body. The perfect fit ensures both sealing and a comfortable hand feel. Some manufacturers do not have the ability to produce one-piece valve ball and seat components, and use rough machined split valve seats, which not only add leakage areas where the upper and lower valve seats are pressed together (note that the joint between the upper and lower valve seats is the least stressed in this structure and is particularly prone to leakage), but also cannot achieve precise valve seat manufacturing capabilities, which is the key to causing high-pressure leakage.. Hikelok can provide truly one-piece ball valves that is resistant to high pressure and has a long lifespan.
Secondly, the simplified version of the ball valve does not have packing, and the valve seat also serves as packing. However, due to its larger size than the valve seat (packing), it needs to seal the valve body, valve ball, and valve stem at the same time, which is prone to wear during use. Therefore, six disc springs are installed at the top to compensate for the wear during use. However, due to the need for compression to be transmitted through springs, rough processing cannot guarantee the sealing of the valve seat after transmission through springs. Therefore, these manufacturers have removed the springs or, for cost considerations, directly omitted the springs. How can we ensure the service life?
Choosing a truly one-piece ball valve is the key to ensuring no leakage under high pressure conditions and long-term use.
Hikelok, a professional manufacturer of instrument valves and fittings.
For more ordering details, please refer to the selection catalogs on Hikelok's official website. If you have any selection questions, please contact Hikelok's 24-hour online professional sales personnel.
Post time: Jan-03-2025