timfleegel said: I don't have one. What type of problems may I be having by not having one?
Tim,
If you have a VFD or EBV system, you don't need one. Pressure tanks are for regulating pressure and to keep the pump from cycling. My old system has two steel tanks that are partially filled with air, no bladder. Pressure tanks of any sort are dangerous as heck when you are talking about our types of pressures. I'd love to get away from mine.
But, like Steve said, all of our hydraulic pumps have them. I'm not sure of any other way around them for a hydraulic system.
As mentioned, make sure it is rated for our pressures. Your average well tank is really only designed to go up to 100psi. I'd look for a high pressure tank that can handle more than that. Also, it should be charged to 3 psi less than your operating pressure. This may require you to increase your pressure on your air compressor to reach this. Also, make sure the tank is secured and bolted to the floor or wall. All it takes is a bump for these things to become missiles.
Any good well or pump supplier can help find a high pressure tank. The fiberglass wound ones are great for this, but very expensive.