BillaVista
PrettyBoy
First, find out what style the ports are. With that info we can discuss options.
Off hand, I'd say:
- Use the correct fitting. i.e. if it's NPSM with a crush washer, then use that style fitting.
- Use a compatable fitting (there is a limited interchange / compatibility on some - we can discuss possibilities once I know what the port in the case is)
- Re-construct the port to match the fitting you want to use. Requires case dissasembly, but may be the best long-term solution - especially if it rids you of cursed NPT ports. Depends on your machining ability. If I had my way (time/$$/ability) I would machine every port to an ORB - if there was room.
- Make something else work as best as possible. This is risky. It bit Adrian. Still not convinced of why - there are several factors at play. If using a tepered male thread in any port, even if it's a matching tapered thread port, you have to be extremely careful with tightening as the threads are a mechanical jack. Most people way over-tighten NPT threads (and most have to because the threads are well used and, due to their design, get progressively more and more damaged every time you dissasemble and reassemble and what makes it worse is that it's the threads themselves that are the sealing surfaces - which is why I hate the fawkers in the first place!) Loctite make excellent sealing compunds of many types - probably a good bet. I would not use the cheap lumpy home-depot plumbing pipe dope.
Off hand, I'd say:
- Use the correct fitting. i.e. if it's NPSM with a crush washer, then use that style fitting.
- Use a compatable fitting (there is a limited interchange / compatibility on some - we can discuss possibilities once I know what the port in the case is)
- Re-construct the port to match the fitting you want to use. Requires case dissasembly, but may be the best long-term solution - especially if it rids you of cursed NPT ports. Depends on your machining ability. If I had my way (time/$$/ability) I would machine every port to an ORB - if there was room.
- Make something else work as best as possible. This is risky. It bit Adrian. Still not convinced of why - there are several factors at play. If using a tepered male thread in any port, even if it's a matching tapered thread port, you have to be extremely careful with tightening as the threads are a mechanical jack. Most people way over-tighten NPT threads (and most have to because the threads are well used and, due to their design, get progressively more and more damaged every time you dissasemble and reassemble and what makes it worse is that it's the threads themselves that are the sealing surfaces - which is why I hate the fawkers in the first place!) Loctite make excellent sealing compunds of many types - probably a good bet. I would not use the cheap lumpy home-depot plumbing pipe dope.