I don't think you need to worry about burst pressure too much here. The reason for the 4:1 ratio is to accommodate an occasional spike in pressure and give you lots of safety cushion, so to speak.
If you use SAE 100R2AT as I mentioned before, the 1/2" size is rated for working pressure up to 3,500 PSI. The minimum burst pressure is four times that, or 14,000 PSI. I seriously doubt your system is going to see pressure spikes that high.
Smaller sizes, like 1/4" and 3/8" are rated even higher.
Because SAE 100R2AT is very common, it is also extremely economical. We sell 1/2" ID for only $1.64 per foot ( $1.56 when you order online at www.DiscountHydraulicHose.com ). Fittings and assembly are slightly more.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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