Top 8 Things to Consider When Selecting Excess Flow Valves

When looking for excess flow valves, there are some very important things to look for. You want to make sure you know exactly what you’re getting before you place an order. Not all providers have what you need. Depending on the industry, you may need particular features. So, you want to consider the top 10 things to look for to help you figure out exactly what you need.

1. Flow valve type. You want to make sure you buy the correct type of excess flow valve. This means looking at how the flow is controlled inside the valve. Typical load and discharge operation valves use a wafer type valve.
2. Line/Flange Size You will need to look at the size of the body based on the flow required for the material being handled. Of course, the larger the body, line size, the more fluid can flow through the valve. 2 inches to 4 inches are common line sizes for charging operations.
3. Ability. For a given body size, flow rates may vary depending on the spring used.
4. Material. The valve material must also be considered. The material must be compatible with the fluid being handled. Corrosion or erosion of the body or working parts would possibly impede valve function or lead to possible valve body failure. Are the key parts of the valve made of stainless steel or other materials to ensure long life?
5. Quality. The quality of the valves can vary from one supplier to another. To ensure you’re getting the best possible quality, you want to buy from a reputable supplier, one that has a reputation for providing high-quality products to the best companies around the world.
6. The rating of pressure. Make sure the valve is rated for the pressure you will see in the piping system. High quality valves are hydrostatically tested to 750 PSI. Valve flange rating is also a consideration with common flange sizes of 150#, 300#, 400#.
7. Wait time. Find out how long it will take to get the excess flow valve you need in the required size and capacity. Some providers may meet your rapid response requirements!
8. flow stamp. Excess flow valves control flow in only one direction. Is the flow direction clearly stamped on the valve to prevent installation errors? A simple installation error would render the valve inoperative in the event of a critical line break, etc.