All you want to know about JBL bags

Is the construction good enough to hold a 250lb person?

Just noticed that the threads on the nozzle are not synching with the bag threads. I may have to discard the bag. Bummer!

Is the construction good enough to hold a 250lb person?

Probably, but I would sit on it slowly--don't pounce on it.

The threaded piece came off my JBL and I will repair this by sticking on an automotive tyre tube replacement valve stem. It is also the same thread as the original JBL outlet. Mind you, I think that the hole through the nozzle is too small for my liking and the nozzle not long enough. regards, irrigator333

Remember, unless you sit so that your feet are in the air your whole body mass will not be on the JBL. I weigh 85.3 kg (188 lb in your money), but my "sitting mass" is 71.8 kg. The other component to be taken into account is the plan area of your derrière on the bag and I have no idea how you would measure that. As Susie says "mount your bag gently".

Enjoy!!!

Yeah, butt what a thrill feeling the nozzle going in and then as you carefully add your weight to the JBL feeling the water entering your bum. I like 'riding' my JBL and feeling the nozzle moving around inside me. 😃 regards, irrigator333

Check with klystra for the new JBL bags and nozzles.

Remember, unless you sit so that your feet are in the air your whole body mass will not be on the JBL. I weigh 85.3 kg (188 lb in your money), but my "sitting mass" is 71.8 kg. The other component to be taken into account is the plan area of your derrière on the bag and I have no idea how you would measure that. As Susie says "mount your bag gently".

Enjoy!!!

This is absolutely correct.

It is next to impossible (maybe impossible) to get the same pressure out of a JBL or as much water out of a JBL as you can from a bag without pushing yourself DOWN on the JBL from the ceiling!

A nice feature of the JBL is you are sitting on a warm bag while the warm water is flowing inside you. I like the JBL.

I bought my first JBL in the late 90's from Beth Tyler. It has since been worn out and will need to be replaced. I never had any problems with getting adequate pressure and getting fully filled with my feet on the floor. If you want the rush of high pressure then perhaps you will need to use a high hanging bag.

I had not thought about it before, but Susie has a good point. Even if you are 250 pounds and you dit on the bag with feet in the air, there are 250 pounds of pressure on the bag. Looking at pictures of a JBL since I don't own one, it looks like the interior surface area of the bag would be over 250 square inches. So the water pressure, when spread over the whole interior, is going to be less than one pound per square inch. That's not a lot of pressure. A closed or open top bag hung three feet or so above your rear is probably going to exert more pressure from its water column.

Those of you well versed in fluid dynamics please correct me if I'm wrong.

The JBL bag is considerably hyped, but I find it has at least two significant disadvantages:

(1) The connection between the nozzle and the bag is prone to leak, which makes a mess.

(2) You can never get the last litre or so of solution out of the bag by sitting on it.

I haven’t used mine for a long time.

For what it's worth, water exerts roughly .5 psig per foot of column height. Therefore, an enema bag hung 3' above the anus is exerting approximately 1.5 psig water pressure at the nozzle tip. To extend this, a submarine at 500 foot depth is experiencing approximately 250 lbs of water pressure on every square inch of it's exterior surface....hence 250 psig (pounds per suare inch - gauge). Water pressure is a function of column height, whereas volume is irrelevant. I use the terms "roughly" and "approximately" as there is a slight difference in the density of salt water (heavier) versus fresh water, but the .5 psig is still a good rule of thumb.

^^^^ .434 psi per foot of column height.

.434 PSIG per foot of column height seems reasonable. Submarines, I, and the Navy parted company almost 42 years ago now, and I was going from memory, and didn't feel like taking the time to research the "exact" figure.....which is why I prefaced my comments with the descriptors "roughly" and "approximately". Besides, I doubt that many butts would be able to discern the .198 PSIG delta-P (.066 x 3'). I'm not offended. 😃

My ultimate dream is to have my partner sitting on her bag across from me naked

She her expressions as she is filling and have her see mine as I am filling

And watching each other masturbating til orgasm would be awesome

Another way to remember is barametric pressure is 14.7 psi=34 feet of water

I have used JBL bags in the past. I got my from Beth Tyler. I loved it. Psychologically, the fact that my own body weight caused the water to flow, it was such a turn-on. I also loved the feeling of the rubber of the bag against my butt cheeks. I wish I still had mine, but that's another story. LOL

Does anyone have an idea about where one might get a new JBL bag now that Klystra appears to be out of business? Thanks.

I don't know but I'd like to have a source too. How difficult to build one? It appears from photos I've seen, it is made from sheet rubber glued together and bound together by a rubber tape, kind of like we used to make our own wet suits for diving. The valve mechanism and nozzle would have to be fabricated, not impossible. What about taking a large closed top bag and adding the valve/nozzle? I'm tempted to try.

the hoseman1

If you try let us know, please

Randy

There is another thread titled "Home made JBL Cascade Bag" in which I submitted this post:

"Yes, I made one about 25 years ago. I had seen JBL Cascades in E magazines and nobody was reproducing them at the time.

I cut a section out of a new inner tube, folded the ends over and glued them with rubber cement. But the trick was to make a way to get a nozzle fastened to it. Being a machinist, I had access to a lathe and made the round parts required out of black medical-grade delrin. This included the flange that was attached permanently on the top of the bag, and the nozzle that would plug into it. After the bag was filled, the nozzle would snap into the flange and had an O-ring on it to seal up snugly and not leak. Also, I new that back pressure could force contaminated water back into the bag, so I included a check valve inside the nozzle when I made it.

I had guessed about how large to make the bag, and it ended up holding a little over 3½ quarts. Close enough.

It's held up well. I still use it to this day."

Good luck if you try to make one.

Does aneone still sell a jbl style bag ?

I do. It's a different feeling

Does aneone still sell a jbl style bag ?

Klystra was the only source for these, and it has gone out of business. You might be able to use a sturdy closed-top enema bag in a similar way, by inserting the nozzle and then sitting on the bag instead of hanging it up.

I had a JBL which I purchased from Beth Tyler. I enjoyed it immensely. I'd like to find another one too.

JBL enema is very different experience, I like it so much!

I have a jbl bag and enjoy it. I have also sat on a two quart bag and that actually works well. Just be careful to keep out any kinks from the hose and have the stopper end pointed at the tub just in case. I have not had any trouble this way but it does feel kind of unsteady. I definitely recommend this to those who don't own a jbl bag and want to try a sit down enema. Let us know how it goes. You may also try to refill the bag and see how much you can take.

I purchased an original JBL bag at the Bottle House (a museum) in Death Valley in the early 1980s. God only knows how old it was. The Bottle House is located in an abandoned gold mining town dating back to the 1900 gold rush, so it could have been a qualified antique.

Sadly, it was stolen from my car in the late 1990s when I lived in San Francisco. Other play items were stolen that evening, and it was a tough night in the City.

Has anybody ever researched the origins of the JBL?

JBL stood for Joy, Beauty, and Love.

Dan