Seeking advice on the methods for connecting pipes and valves in instrument air systems
Thread Content
Issues related to connecting the control valve to the air storage tank. I want to know that the owner provides a G1/2\" pipe for the air storage tank, and also requires that a check valve be installed before the tank. I would like to ask whether the connectors provided with domestically manufactured air storage tanks can be directly connected to the check valve, and how the check valve should be connected to the G1/2\" pipe. Additionally, a tee fitting is needed at the outlet of the air storage tank: one 1/2NPT(M) inlet and two 1/2\"NPT-φ10 outlets. Is such a fitting available? Please, those with experience, help provide a connection method.
First and foremost, it is important to determine the type of connection for the check valve. If it is also G1/2, and the male and female ends of its connection match those of the gas storage tank’s G1/2 interface, then there is no problem with the connection. Our check valves from British brands typically use G threads, while those from American brands usually use NPT threads. If it is NPT, a adapter can be used to make the connection possible. For three-way connectors, we haven’t seen this type in our current catalog of American brands. The three connections are either all sleeve types with a diameter of φ10, or all 1/2 NPT, or two sleeve types and one 1 NPT. If two NPT connections and one sleeve connection are needed, simply add an adapter to one of them!
G1/2\" pipes can be connected to check valves. If you find that the connector of the air storage tank you purchased cannot be connected to a 4-mm fitting, it’s no problem; if it’s a 6-mm fitting, then add a 6-mm to 4-mm adapter at the outlet. When installing the check valve, pay attention to the direction indicated on the valve body. Three-way connectors are available; you can go to a hardware store to take a look. I have previously worked on the design of equipment in this area; pressure gauges need to be installed on gas storage tanks, and it is essential to determine exactly what pressure the tank can withstand as well as what the inlet pressure is. Furthermore, in cases where the pressure is not very high, we use red copper tubes for welding. It works very well, and it’s easy to install and maintain.
Classmates upstairs, I have another question. The check valves that my company plans to use are from the UK, so they have G-thread, right? If we use connectors with a diameter of φ10 at all three connections, can they be secured using φ10 tubing? If the tank outlet has a G1/2 or 1/2 NPT thread, do we also need to install an adapter?
I’m not sure which brand you are using in the UK; we are the official Chinese distributor for HALE HAMILTON in the UK. In the UK, G-thread is generally used, and there’s no problem with that. We can also discuss the use of three φ10 ferrules for a tee connection; in that case, there’s no problem at all with connecting φ10 tubing. If the tank outlet is G1/2, then connecting it to a check valve with a G1/2 thread is no problem. If the tank outlet is NPT but the check valve has a G thread, then a adapter is required. This post was last edited by bingyu252 on 2009-4-10 15:25.]
This post was last edited by ftjn001 on 2009-6-24 21:02. Could the friend above provide a contact method? I have a question regarding a HALE HAMILTON pressure regulator.