Posted by spencer13cat on January 26, 2008 at 20:12:54 from (71.149.143.236):
RodInNS said: (quoted from post at 12:38:22 11/23/07) I generally use two swivels unless the hose is very short or very easy to install. There are situations where two swivels are required as well...
I avoid JIC fittings if at all possible. Those have got to be the KING of leakers. I can't say that I've ever had a problem with pipe fittings leaking if the were installed properly. The JIC will leak and leak... and you keep tightening them, they still leak until you tighten them enough to strip the threads. Then you start over with a new adapter and another hose... I get rid of those things every chance I get.
Rod
Pipe thread fittings are the worst type of hydraulic connection period. I am a factory rep for Parker and have also sold Aeroquip in the past. I have close to 20 years in the industry. I am also Fluid Power Certified by the International Fluid Power Society.
I can understand your frustration with 37 degree JIC. But it is likely due to not completely understanding it. The most common cause of leaks with JIC is the cone on the male is scratched. Once that happens it is worthless. Any of the major manufacturers should have an assembly method for all types of fittings in their catalogs. JIC is flats from finger tight.
The best way to handle the original problem is to get a hose with a female JIC fitting and an adaptor with male NPT x male JIC. It is also much cheaper than the pipe swivel hose fitting by itself(Parker 113xx or Aeroquip 1PSxx. By the way the pipe swivel fitting is notorious for not being a long-term fix. the sealing mechanism is an o-ring inside the crimped male fitting.
O-ring face seal is better yet. It is almost idiot proof.
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