So for a valve repair to be cost effective it is essential that you don’t want to choose the wrong type of valve for the repair in the first place. A few simple checks before you order the required valve(s) will prevent the unnecessary time and money that could result from choosing the wrong item.
Match Material to the Medium
When selecting the right valve for a repair it is useful to consider the first the medium will be passing through, ie the fluid or gas. As a rule of thumb brass valves are suitable for use with potable water and low pressure steam applications. However it is also important to note that stainless steel is far better than other materials at withstanding the corrosion of aggressive chemicals and other media.
Check Pressure and Temperature Ratings
Check the Pressure and Temperature Rating of the Valve Stock
Every industrial valve is rated for maximum allowed pressure and temperature. These figures must be checked against the operating conditions of your system and the replacement parts chosen must be rated higher than the system’s operating conditions. This is especially important for valves that are to be used underground as damage to the valve during installation can increase the maximum allowed working pressure. In such cases, the chosen valve must be rated higher than the system’s normal operating pressure to allow for safe operation. A good starting point for checking the specifications of industrial valves and fittings is the British Standards.
Get the End Connections Right
Measuring the end connections on the repair valve, check the types of connections your replacement stock has, and make sure they are the same. There are many types of connections on the market, such as threaded, flanged, compression, and push-fit connections. If you are planning to change between different connection types, the risk of introducing new leak points increases dramatically.
Confirm Bore Size and Flow Rate
A repair using a valve stock that has a bore which is too small can cause problems with the flow of the medium even if the valve is perfectly sealed. It is therefore necessary to check the Cv or Kv flow coefficient of the proposed replacement as well as its bore diameter to check that it will not restrict the flow of the medium in the repair.
Look Into Spare Parts Availability
Choose a product that has easily available spare parts for seals and other components within the valve, otherwise you will just be transferring the same maintenance problems with the new repair. If you want Valve Stock, https://orseal.com/ is a good place to start.
Taking a few minutes to go through these checks before purchasing will no doubt save time and money in the long run.
