We are a professional manufacturer of pipe fittings, among which quick couplings and two-piece ball valves are one of our products. Let's first look at several potential problems with quick connect fittings.
What causes the leakage of quick connect accessories?
The most common cause of leaks is that the pipeline is not pushed fully and the O-ring is not properly sealed. One technique is to measure 3/4 inch and draw a line on the pipe entering the fitting. That line should disappear in the accessory.
Another reason you may experience a leak is that the pipe is not cut off properly. If the pipe is cut into a diagonal shape instead of a square cut, the O-ring may not always seal on the circumference of the pipe.
Another potential problem is a torn O-ring. If the pipe is not cut properly and has a sharp tip, then the sharp tip may damage the O-ring, causing it to fail to seal.
Too much side torque or side load may also cause parts to leak. If you try to bend the tube to connect to the water treatment system, the tube itself may stretch the O-ring into an oval shape, which can cause looseness on the seal and cause the fitting to leak.
Frequent disassembly and placement of the pipeline will gradually damage the pipeline. The metal teeth inside the locking chuck will bite into your pipe. Every time the pipe is removed from the fitting, a small part of the pipe may be scraped off. Over time, this frequent disassembly can severely scratch your pipeline, causing it to bypass the O-ring, allowing water to pass through. If you need an accessory that can be connected and disconnected repeatedly, you might want to consider a quick release accessory.
What temperature and pressure can the quick connector withstand?
The rated pressure of quick connect fittings depends on temperature and fitting size. The hotter the water, the lower the pressure on the accessories. This is related to the expansion and contraction of plastic. The larger the pipe, the stronger the pipe, and the greater the pressure the fitting can withstand. The pressure and temperature must be viewed simultaneously to determine the pressure limit.
Can you use quick connect fittings with gas and air?
Most of the quick-connect accessories are rated to handle liquid compressed air and gas. Some manufacturers rate accessories in specific ways. If they are manufactured to handle water transportation, they will only provide specifications and grades for such applications.
Quick connectors are rated for their chemical compatibility. If you are going to pass in a fluid containing certain chemicals, it is very important to check the materials used. If you pass chlorine-containing fluids into the system, make sure that the plastic fittings used can withstand the compound.
How do you know what size pipe is compatible with quick connect fittings?
It is very important to understand the size of tubing and fittings. There are two main types of sizing when dealing with plastic pipes, and they are very different. Smaller diameter joints measured by outer diameter (OD) are specially designed for LLDPE pipes or low linear density polyethylene. Larger fittings of one-half inch, three-quarter inch, one inch or larger are considered CTS or copper tube size fittings. CTS fittings are compatible with polyethylene pipes and PEX pipes. These accessories are manufactured in a very specific measurement category. Therefore, in applications that require 3/8 outer diameter connectors, 3/8 CTS connectors cannot be used.
Most fittings can also be used on copper pipes, but it is not the best pipe for use with OD and CTS fittings. If you want to use copper or stainless steel tubing, it is best to look for joints made specifically for these types of applications. John Guest is one of the manufacturers of accessories compatible with stainless steel. They call them super-sealed fittings.
Secondly, let's take a look at what the two piece of ball valve is and what does it do. The two-piece ball valve consists of two independent parts connected by bolts or threaded components. Usually, the one-piece type includes a main body and one end connection. Subsequently, another part fixes the valve trim into the valve and includes a second end connection. This type of assembly allows the port size of the two-piece ball valve to be equal to the connected pipe. In this case, they are called full vent valves. Since there is no pressure drop, the flow rate on the full vent valve will be higher. In addition, two-piece valves can withstand pressure from both sides, making them effective for bidirectional flow cutoff. Two-piece ball valves are also usually the most cost-effective full vent valves on the market.
If you are interested in the above products or want to know more, please contact us.