I am still using one that's 32 years old. The material and design are time tested. The golf pumping stations used pressure regulators that were very similar in design and functioned in the same way. Most likely, you even have them in your house where your water line comes into your residence. Because the supply line is very high pressure, to bring it into the household, unregulated, would blow everything that's connected to it. Clayton Valve Company is the most common producer of these valves. They are used to control the flow of many chemical and petroleum products in the manufacturing plants.
