Had a client send me a few pics from some carnage. 105 PSI caused this. Apparently it sprayed powders all over the room. Luckily it had nitro going through at that time. Glad im not him.
HFS 6"
Be safe out there
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i think the 4" ones are only rated to 100 psi. The 6" have to be under that. even though 105psi shouldnt be that much. Its certainly over the safe operating pressures of these 6" ones.
EDIT… I will tell you from the hardware and the look. These are the more expensive type of short sight glass. there are cheaper ones out there from other suppliers. these aint them
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How can you tell? The bolts?
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yes. bolts which look to be m8 bolts and hardware and the crack on the glass looks to be the thickest option glass.
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Shouldn’t 6 inch sights be kind of a no no? I mean 4’s are rated to 100psi, and you’re supposed to stay around 1/2 the max rating aren’t you?
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They dont even list a pressure rating on HFS. Could be a legal loop hole.
Yeah the bolts are about 12mm
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i dont have it listed either. maybe ill do that this week. Im not a big fan of the massive sights. We have abused some 4" and ran them almost double the rating for a while. I think the rating is more for safety as it is glass. im sure those rating are way off when we are talking extreme temp swings too
i will further add. Ive seen about 10x of these cracked sights over all the ones ive sold. WHen i say ive sold a shit ton of these. We are talking thousands as i cant keep these in stock ever. Id imagine if we look at the number of cracked ones over the ones ive sold. Its probably in the under 1% fail rate which could probably happen to any part given how we abuse the shit out of these.
i keep some spare glass on hand as these can also crack in the mail while shipping.
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My bizzybee site glasses are tested to 150psi. All of his are rated for that pressure. I know these aren’t bizzybee site glasses, but I’m using those as a reference, as he uses a far higher grade glass than hfs
But, putting media in a site glass is a huge nono. The media will want to go somewhere and the glass being the least resistance, vs steel, the glass loses. It’s not the same as pressure testing. This is force against the glass with the media pressing out. Think of water freezing in a closed chamber.
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Am I wrong in saying things should be run around 50% of max rating in general?
Edit: I know it’s not ‘wrong’, but what’s considered generally acceptable?
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You are probably correct.
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I ran Killaz 4" to 100psi @-70f for a metric fuckton of hours without any issues
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I honestly thought we were collectively over these things around the same time everyone decide brass was bad. Like 2015
But then bzb keeps using these fucking things and then every Chinese slave labor shops rips them off poorly.
If you want to see what’s going on inside of your tube just put a c1d1 camera in it like a boss or use the 4 port hole sight glasses that can actually be certified.
Or just look at when it starts and stops dumping in to your collection and use your imagination.
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I have ran @Killa12345 4" to 150psi plenty.
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I’m sure my crc has back heated my column to 150-175f a bunch too. My 150psiprv has sprayed on multiple occasions when I get lazyboi.
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Not direct replacements, but if you want to see whats happening inline with pressure ratings:
I rock the the sanitary triclamp 6260.
@GrayWolf also rocks(ed) a Ernst sight glass, I believe he was using a medium pressure as seen on their page 5 catalog.
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@anon16547145 C1D1 camera you say?
Any links?
My honey pot has been driving me nuts. I appreciate XD’s system, but their sight glasses on my system have too much of a angle to them, I can’t see the bottom of my honeypot.
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I cant believe people still use these. They habe always sketched me out.
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I use a hfs 6in to 100psi at times with no problems however like @Dred_pirate said using a 6in sightglass with powders in there will put more pressure on the glass than just vapor would
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Hi ya’ll! I used the Ernst high pressure sight glass, to meet the 350 psi minimum requirements for ASME Section VIII pressure piping. We used an SSH clamp for the same reason.
The tubular sight glasses are an accident waiting to happen, as glass is at its weakest under tension.
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105PSI wayyyyyy to high.
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