The sight of a diversified range of needle valves, be it in size, shapes, the material used, and the uses for which each model is suited can be intimidating for some. Knowing the requirement, which can vary from individual to individual, and looking for products that can help in a specific regard, is a good way to narrow down the list of prospective needle valves.
Star those needle valves made of the material you prefer
The first point a buyer can note when weighing up the benefits of a needle valve is to assess its type. There are several kinds available in the market, from plain brass, nickel-plated brass, stainless steel, carbon steel to lead. Users would surely look for heavy-duty needle valves that withstand the most challenging conditions and combat high pressure. So, whichever material you deem fit, ensuring that the needle valve is rugged and can serve multiple purposes in most media (gas, oil, air, water, or steam) before the purchase can make it a cost-effective item.
Factors to consider before buying needle valves
Few needle valves might only be appropriate for LPG use, propane, or butane. Needle valves that are ready to use and require no additional assembly or fixing can be convenient for a layperson. Their working pressure can be anywhere from 600 PSI to 2175 PSI, and the temperature range can be between -40℃ to 230℃ or above. The connector in most models is usually of the NPT Female type, and the packaging can include one or two needle valves, with or without a Teflon tape or silicone O rings.
You may also chance upon types that support either unidirectional or bidirectional flow during your search for needle valves. Needle valves characterized by bidirectional flow may need occasional replacement of the O ring inside or sealing both ends with Teflon tape to prevent leaks. The primary purpose of needle valves is flow regulation, but with the use of a secondary regulator, a user can achieve stable flow for an extended duration. The needle valve, in this instance, could also open and close the gas.
Points to remember before executing your decision
Among brass or needle valves, with or without metal sealing, the ones with anti-corrosive properties would make them effective in settings that use liquid or gas, which may otherwise react with the metal. You might also come across products that explicitly state they would not work in media that may corrode brass. Some of the other features a buyer could analyze while checking the suitability of a needle valve include the sizes of the ports, the various mounting styles, and adjustment options that one can employ to make the product fit for use.
Categories Simillar to Needle Valves includes Control Valves, Diaphragm Valves and Float Valves