I thought I would never have to buy one again as it was I/R, ARO by at least one American company and QA even if it is made in Korea. It worked fine for a while (about a year) and then started leaking every time the pressure in the tank dropped below the set value. Rare use. Sometimes it can be stopped by increasing/decreasing the pressure. Other times (almost always now) you have to remove the bowl, filter and plunger assembly to loosen the rubber plunger which has to float with the pressure differential. This "puck" has just been swollen with oil and moisture and is stuck in the "cage" in which it is supposed to ride. I ordered an I/R repair kit that fits my controller model and the parts don't fit. Now that's junk and I'll try the Chinese brand. I can get 2 for the same price, so if it's a one-off item for a year, so be it.
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