K-valves, burst disks and asphyxiation dive-sex

A cut-away view of a SCUBA tank 3000psi K-valve 

The photo: A cut-away view of a SCUBA tank K-valve showing the burst disk assembly protruding from the right hand side of the illustration. In the Sherwood 5000 K-valve, which is what we are currently using, the specially designed burst-disc assembly evenly distributes escaping air, preventing (to some extent) the tank from spinning or tipping if the burst-disc vents. However, the diver is still surprised, jerked around and left gasping without air.

Dive porn training & location shoot: The porn actress “Juicy Breeder” is working for Taryn’s porn production group and they will be videoing location scenes in the cove for the next few days. Unlike most porn stars she’s a blond with a trim balletic figure and 32C+ cup breasts so she isn’t pneumatic at all even though she is silicone enhanced. Like me she has an extremely long vagina when aroused so can take exceptionally well endowed men w/o being injured  For contraception she has a stringless ParaGard IUD inserted since she frequently performs in fisting and menstrual sex videos. However, she had never had dive-sex and wants children later, so she was anxious to be fitted with a Reflexions (she took a 80mm) for flood insurance while performing in the dive-sex scenes.

Her male Co-star, “Long Tom” Spencer, is a delight to work with once we got him past being paranoid of unprotected sex with women in my circle after we all exchanged current negative full STI panels. He is amazingly well hung and knows how to use every inch to please a woman so sex scenes with him involve very little acting and a lot of gloriously pure lust and hormonal ecstasy on the part of his lovers.

The video story line: A young competitive diver is having an affair with her trainer and she is competing with a rival and more experienced diver for her trainer’s affection. The heroine’s tank is sabotaged and ruptures during a dive-sex encounter with her trainer just prior to an important competition including her diving and romantic rival. The sabotaged tank creates a situation which exposes our heroine to new levels of danger and sexual intensity with her trainer. The Director is even going to use scenes of me breast feeding (Juicy and my nipples and areolas look quite similar) as the heroine is having to deal with lactation as a side effect of coming off hormonal contraceptive s which is something that happened to me IRL.

Burst disk asphyxiation testing: Some time ago Jack and I had been testing commercially available chemical heat-packs of various sizes which during their chemical reaction develop and sustain temperatures of approximately 54°C, or 129.2°F. When properly positioned against a relatively full 3,000 psi tank we hadn’t been able to get one or even several large heat-packs to raise the temperature (and therefore the pressure) of the gas enough to cause the burst disk to rupture and vent the tank.

So we enlisted Jeff of Labia Labs to develop a hand size industrial strength chemical hot-pack that can boil a large pan of water in a minute or so. We have tried static tests and the burst disk vented the tank submerged in cool water in less than a minute on all five HP steel tanks we tried them on. But there are safety problems since the pack can ignite fires if placed in contact with combustible material and so is in an insulated shell except for the active surface that is placed directly against the tank and held in place by a waterproof adhesive or in the case of steel tanks a strong magnet.

Having a burst disk vent during a dive is a scary experience even when you are expecting it! With Jack as my partner we tried it with the industrial strength heat pack attached to the lower end of my tank on several short test dives the other day. I find we are safest if I hold myself away from him by holding on to the shoulder straps of his tank harness with my elbows against my chest and forearms straight so we were a foot or so apart to keep our masks from colliding when I’m shoved into him and we start to tumble. Even when expecting the tank to vent it’s frightening and the roar of the escaping air is deafening and the tumbling disorienting and getting jerked around during an orgasm while the tank is venting and being unable to breathe or inflate a buoyancy compensator is immensely erotic, which complicates the process of pulling off my mask, grabbing Jacks buddy reg and starting to breathe off it because I don’t want to lose the incredibly strong vaginal contractions of an asphyxiation orgasm. 

Heading for the surface might not be a good option until the tank finishes venting as it may be safer to stay strapped to it rather than to unfasten the harness and have it smash in to you while still venting. Assuming of course that your partner has a buddy reg and you can get to it. That’s what Jack and I have been doing. When the tank begins to vent I hold myself away from him with one hand while pulling off my FFM and use the buddy reg on Jack’s octopus. Then after the tank has vented unfasten the harness and send the vented tank to the surface with a lift bag. I’m fortunate that I’m wearing a hood that deflects some of the roar of 80 cu. Ft. of high pressure air escaping and the bubble clous rushing to the surface. Jack and Tom say the noise doesn’t bother them. But I know if they are exposed to much of that it will affect their hearing.  Even with the hearing concern that test arrangement has worked well so far and we have kept our divemaster busy replacing burst disks and refilling tanks.

Even though it would be more photogenic with our long hair floating loose we are wearing hoods with sound absorbing ear protectors and the women have our hair in a bun or French twist under them so when the tank bursts our hair doesn’t get caught in the valves and hoses while the ruptured burst disk is venting and rotating the tank. The hoods also reduce to some extent the roar of the escaping air right next to the woman’s head and less then two feet from her partner. I’m not sure what the director will want to do for the production videos rather then just the test and training we have been doing, but I hope at least Juicy wears a hood to protect her hearing.

Women and erotic asphyxiation: I usually think of erotic asphyxiation as a guy thing involving hanging or suffocation with a plastic bag over the head. However, what we are attempting to do for a scene in the video is have me (and later the actress whose tank vents) having an orgasm when the tank vents and there is no gas coming through her reg driving her to a hyper-orgasm with unbelievably strong vaginal contractions. Her orgasm with no air at the very time when at maximum exertion and oxygen is needed most, being a form of erotic asphyxiation. Her partner’s buddy reg is just out of her reach and her vaginal contractions are their strongest while she can’t get air.  It’s a very delicate balance between unbelievably exquisite sex and brain damage and there are no stunt doubles, the actors do all the stunts themselves. So we need Juicy and Tom to get their timing down precisely.  

Today Jack and I have demonstrated to Juicy and Tom how a venting tank gyrates wildly when the burst disk ruptures on my tank while Jack is thrusting inside me. Then while I switch tanks Jack worked to bring Juicy to orgasm and to get her somewhat accustomed to the burst disk rupturing on her own tank so her being nearly asphyxiated and being saved by her instructor during their white hot dive-sex encounter looks realistic when worked into her training regimen for a competitive SCUBA race while fending off a rival’s attempts for sexual encounters with her trainer/lover.

During Jack’s time penetrating Juicy and rupturing her burst disk I work with Long Tom getting him used to the effort required to thrust into a woman during dive-sex while I relax and let him have his way with me enjoying the bone melting orgasms from the talented penis of a hard and rising porn star before we got to the part where he pressed the start button on the heat-pack attached to my tank and he held on while ejaculating in me as the burst disk ruptured and we tumbled in the roar and cloud of venting bubbles while I groped for the buddy reg on his octopus.

Hoods and penis gags for AST

Polymorphe latex hood showing AST facial features

The Photo: From the Polymorphe catalog showing the A-01 mask facial features – rounded eyes, mouth and nostril openings - required for AST students. This design (w/o the optional hair cone) was modified for St Lucy’s to extend the skirt several inches across the shoulders, back and chest to minimize the likelihood of the neck pulling out of a catsuit during a struggle. It is made of Double Thick (0.040″) latex to increase the compression when fully zipped closed. St Lucy’s has used Polymorphe latex gear for more than five years and we love the high quality and great customer service they provide. I especially like the high quality seams and zippers that don’t pull apart and are easy to open and close regardless of how tight the garment is.

Hoods and AST at St Lucy’s: For reasons of anonymity and safety St Lucy’s students are required to wear hoods during all interaction with their partner/trainers. I’m partial to high quality (Polymorphe) back zip latex hoods for both surface and dive use, but fabric hoods are permitted for surface encounters if they are sufficiently opaque. However, I feel that any student wearing a fabric hood doesn’t have the commitment to BDSM that a St Lucy’s girl should demonstrate if she expects to successfully complete the AST course. That’s because part of a students training is to learn to tolerate the heat that can be generated inside a latex hood during sexual intercourse. I feel it’s an exercise in concentration, to be able to experience the scent of sweat dampened latex as she broils in rubber while her trainer is thrusting into the depths of her tight flat belly and still enjoy an orgasm. Of course dehydration can be a huge problem because of fluid loss through perspiration so staying well hydrated is essential or the rubberist can die of heat stroke.

Sadly, apparently there was an instance of that last month when the partner of Jade Vixen died encased in rubber (or SCUBA gear) in the attic of their home in Philadelphia. For more about that see: http://articles.philly.com/2011-09-14/news/30154678_1_death-pain-s-m-fetish He was a long time rubber/asphyxia fetishist. It’s not just newbies to the kinky world who die while testing equipment or their own endurance or during an encounter.

In the heated training pools at St Lucy’s where thermal protection isn’t necessary Polymorphe chlorinated latex catsuits, hoods, gloves with weighted silicone pool-pointes and FFMs are worn by students and female instructors for ease of bottom bonding while training with gas-guards and rear entry relief zipper penetration. Once a student becomes comfortable with vanilla dive-sex then we add dive-sex while wearing an inflatable penis gag.

Latex hood and FFM seals: We have chosen the latex seal option for our FFM face seals so that worn sealed against a latex hood the mask’s cavity-rim seal develops very strong suction so that when underwater even w/o the spider tightened the seal vacuum will hold the mask on the diver. Latex seals are not as robust so don’t last as long as silicone ones, but since the school FFMs are only used in training/encounter pools where no grit can pit the surfaces the stronger seal makes them better for our training needs, especially for asphyxia training. On the surface even when the wearer is breathing through the ambient breathing valve and the spider has been loosened the mask sealed against a polished latex hood will cling to the hood until the seal vacuum is broken.

Sizing inflatable penis gags for FFMs: We have been fitting my AST students for inflatable penis gags for use while taking BDSM dive training. It’s more difficult than you might think since the length (as determined by the gag and the pressure in it) can block the wearer’s airway and suffocate her or trigger a gag reflex and cause her to drown in her own vomit. But it is a huge rush to have your gag inflated until it blocks the airway just as you reach orgasm! One of the first things a BDSM dive student must do is to find a decongestant that works well for her w/o any side effects like making her drowsy to ensure her nasal passages are wide open when her gag is inflated. Most of the escorts and students prefer Sudafed.

The gag is inflated by means of a LP-hose with an inflate/deflate valve connected to a modified accessory Port on the FFM so that the gag can be controlled by the diver, her instructor or Dom. That means that her SCUBA must be fitted with an octopus and her FFM must have a vacant accessory port available. The most difficult part of using an FFM mounted inflatable penis gag safely is learning to inflate and deflate the gag as the diver’s depth varies, especially during ascent where if the gag isn’t deflated sufficiently the diver can easily suffocate especially if she has been to considerable depth (below 30 feet - 2 ATA) for a prolonged length of time and needs time at a deco stop.

The scent of ‘ripe’ vaginas: An important part of AST is teaching the students how to change the scent of their vaginas to appeal to the tastes of different men. Things that will change the scent of a healthy vagina are: 1) to wear a cervical barrier, diaphragm or cap, continuously for more than 24 hours. The interaction of vaginal fluids with the device will cause a musky odor to develop. The odor may develop faster and stronger with a latex device than a silicone one because the surface of natural latex is porous. 2) Having a man ejaculate directly in the vagina w/o wearing a condom will change the scent of her vagina. 3) And, man’s diet will change the taste and scent of his semen. Meats and spicy foods and alcohol can make the taste/scent of semen unpleasant while eating sweet fruit such as pineapple can sweeten the taste/scent and semen after he eats asparagus can have a very unpleasant aroma. So a male partner’s diet can contribute to a range of vaginal odors. Of course if a woman’s vagina has a colored and unpleasant smelling discharge she probably has a vaginal infection that needs immediate attention.

The dangers of being bubble fucked

A SeaCure Custom regulator Mouthpiece

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Women as sex objects: Vegas is undoubtedly the worst, most effective, city in the U.S. as far as portraying women as objects of desire. Here the mindset hasn’t progressed from the 1950s when the modern gaming capitol began to be developed with mob money. Today of course we have all the latest technology to aid in the sexual objectification of women. It is only the strongest most devious, shrewd and determined women who make it to the top as far as money, privilege and status are concerned here in Vegas. It’s my kind of town! On the other hand, rough sex-play can be taken too far like when a woman is unexpectedly bubble fucked.

An increasing hazard: Being ‘bubble fucked’, where pressurized gas is intentionally injected in to a partner’s vagina, is becoming a problem. It had been a little known ‘exotic’ services offering by a few very experienced and confident up-market escorts and is very profitable although uncomfortable and still dangerous even if the woman has been trained in the technique is using special equipment and wearing the proper protection. The service is a particular favorite of misogynists and to be successful at seemingly enjoying it the escort has to be a masochist. Not that being bubble fucked can’t be exceptionally erotic with the right man and if you love extremely edgy sex. An orgasm under those circumstances has to be experienced to be believed! I think it’s the fact that if your protection is compromised during the experience you are dead or perhaps worse, a vegetable for the remainder of life that makes it so appealing to me, rather like a moth to a flame. Perhaps I do have a death wish.

Most sports shields ineffective: Being bubble fucked is a problem even if the woman knows it’s going to happen and protects herself with a sports shield. That’s because the surge of gas will briefly balloon the vagina breaking the seal on a diaphragm and dislodging a FemCap by pulling the walls of the vagina away from the sides of the brim so the cap loses vacuum and slips off the cervix. The only effective protection from serious side effects from being bubble fucked is to wear an Oves cap and there are many women who can’t be properly fitted with an Oves because of irregularities on their cervical walls. Even some women knowledgeable about the dangers of being bubble fucked and dating or hooking up with a clueless guy have been caught unprepared and have had to struggle to distract him by pulling out his reg or flooding his mask to prevent the possibility of being seriously injured. On the surface in the shallow end of a pool as a last resort it’s easier for a woman to avoid a determined man by removing her SCUBA gear and getting out of the pool. A side effect of the recent rash of injuries is that the request for Oves fittings has spiked as women into dive-sex rush to protect themselves with the only device known to be effective.

For typical escorts who offer dive-sex as a service being bubble fucked is an increasing problem and one they are having to learn to deal with. It’s impossible to tell for sure if the men are unaware of the danger to their partners, are just misogynistic or are actually trying to harm them. It’s gotten to the point that the women I know who are offering dive-sex and who can be fitted with Oves are ‘double bagging’, wearing the Oves cap beneath a diaphragm or FemCap. That’s because there have been at least two instances where the man intentionally pulled out his escorts sports shield before releasing compressed gas into her birth canal. In a few instances getting bubble fucked has spread to social dating between friends where there was no commercial transaction involved. Almost all women divers even though protected try to avoid being bubble fucked if at all possible because it’s basically rape with a foreign object, unless of course, you are into that sort of thing. This is yet another instance of the objectification of women. To add insult to possible injury in an unplanned encounter the woman’s own single hose regulator is pulled from her mouth and used to administer the gas and the wings of her mouthpiece can tear the soft flesh of the entrance to her vagina when the guy tries to shove it in before pressing the purge button.

Professional training: I occasionally train a few adventuresome very, very up-market professionals in the technique. I and they use an octopus on our SCUBA sets so we can have a second regulator (Taryn calls it a ‘pussy reg’) on a longer hose that can be brought from behind and between the legs. A pussy reg is fitted with a mouthpiece that has been custom molded to act something like the bill of a vaginal speculum and fit snugly into the vagina. Our clinic offers this fitting service to ensure the wings of the mouthpiece are fitted to the wearer’s anatomy so it will lock behind the wearers pubic bone and will hold the anterior rim of her diaphragm firmly against the anterior vaginal wall so that under pressure of the jetting gas it will not (should not) displace. An aftermarket moldable SeaCure mouthpiece [see the image accompanying this entry] is ideal for that. The SeaCure is moldable by placing it in very hot water to soften it and then molding to fit the woman’s pelvic anatomy though insertion can still be unpleasant regardless of how much dive-gel is used if the man isn’t experienced. Having the mouthpiece molded by an experienced fitter at the clinic also ensures there are no sharp edges or points on the wings that could tear or puncture the dome of the diaphragm and make her protection ineffective. Going into the pool with a modified reg on an octopus you have to be careful that it doesn’t drag on the paved surfaces and become roughened as you are depending on the smooth surfaces of the wings to prevent vaginal trauma.

St Lucy’s training: At St Lucy’s I have included the dangers of introducing compressed gas into the female reproductive tract (being bubble fucked) in my Contemporary Sexual Health course and we strongly recommend each of our students to see if they are a good candidate for an Oves fitting and if they are they should be fitted if there is any chance that they will be having dive-sex. Because of the availability of compressed gas for SCUBA bubble fucking has, so far as we know, been limited to instances when couples have been diving.