Dallas Center IA 515-720-2463 | N P T is AGAINST the LAW
NPT is very poor for hydraulic systems - PERIOD.
#1- It leaks
#2- Hard to do a good job of putting it together.
#3- Along with assembly, it seems to require more space.
#4- Even harder to get the stuff apart.
My favorite is JIC, followed by SAE O-ring. There are others.
The only time I will use NPT is a NPT to JIC or NPT to SAE adapter.
Any NPT ends hydraulic hose that needs to come apart, goes to the storage area. Which means it will probably be thrown away.
JIC, SAE, etc assemble easy, using end wrenches, vs pipe wrenches for much NPT. Does not require tape or paste. About all female fittings are swivel.
JIC, SAE, etc will come apart very easy. Common end wrenches. No end wrench spreading on NPT hex fittings. No need for the big hard to use pipe wrenches when the end wrench fails.
Myself, if I get into something with NPT in it - I throw the stuff away. Not worth fooling with.
The reason so many farmers use NPT is hardware and farm stores carry it.
Do yourself a favor, go to your equipment dealer or a hydraulic supplier and get CORRECT hydraulic fittings.
For the OP's question: Black pipe is a lot better than galvanized. Strength and the flaking.
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galvanized fitting on hydraulic?
