Air-water hybrid pump mod with larger reservoir

Since there is no dedicated MityVac - Wet and Dry Penis Vacuum Pump System subforum, it's best to nest it together with the Bathmate for mod.

Brother @squirt_inducer_man is modding his MityVac system and is going through the experimentation to accommodate the pump system with a larger fluid reservoir. Attached is a triple pressure protection, which is not needed. A quick pressure release for the reservoir is needed if you are not using 3.8 liters (1 gallon) or larger container since the pressure is around 5 to 13 inHg as you pump, or even higher. Good luck in removing that lid under crazy pressure. But, if you remove the hose draining into the reservoir, the air pressure will be released very quickly.

The system will be slowly perfected.

Part costs:
3 x one way valves: $10
1 x pressure relief valve: $2
3 x 3/8in nuts for the valves: $3
2 x 3/8 o-rings: $1
1 x heavy plastic bottle with good seal, about 1 gallon in size (can be free if you know where to look, or $10)
1/4 in (6 to 8mm) tubing: $5
* Make sure to add in shipping costs if you can find local sellers

Saving in sanity from need to replace or fix the hand pump: priceless

MoS Shop perfected system as MityVac accessories: invaluable

I love the work you are doing. As we perfect this we will implement into the system.

Brother @squirt_inducer_man just pulled the trigger to buy parts to retrofit quasi-MityVac accessory water trap. I'll do a ultra low budget man approach. All parts grabbed on AliExpress for around $20. Shipping is about $25 total. Need some extra nuts but total costs should not exceed $35. Water trap project is for all pumps, be Bathmate or cylinder-trigger like MityVac. Hope this mod will help all brothers with the wet pumps soon. Out of the bath and on the bed/sofa.

oldandlively said:

Brother @squirt_inducer_man just pulled the trigger to buy parts to retrofit quasi-MityVac accessory water trap. I'll do a ultra low budget man approach. All parts grabbed on AliExpress for around $20. Shipping is about $25 total. Need some extra nuts but total costs should not exceed $35. Water trap project is for all pumps, be Bathmate or cylinder-trigger like MityVac. Hope this mod will help all brothers with the wet pumps soon. Out of the bath and on the bed/sofa.

Click to expand...

Once my brothers figure this out we will add this to the store

It will take some time.
I need to determine what size is optimal for one session.

I don't think most men will buy an additional system that costs over 100 USD just to water pump.

The system needs to be less expensive and compact, in order for more to benefit from it's effectiveness.

I have so many ideas in my brain.
I will try them out and report back to @DLD.

squirt_inducer_man said:

It will take some time.
I need to determine what size is optimal for one session.

I don't think most men will buy an additional system that costs over 100 USD just to water pump.

The system needs to be less expensive and compact, in order for more to benefit from it's effectiveness.

I have so many ideas in my brain.
I will try them out and report back to @DLD.

Click to expand...

Looking forward to your feedback

My colleagues laughed at me for doing too many weird things in PE so they provide me a saving grace to pass along to the brothers.

2L bottle with 10 inHg for 30 minutes:

2L bottle with 15inHg for 24 hours but 25inHg for 5 hours:

If you need it right away, have fun getting a premade bottle. Me, still in search for more fun.

This will always be worth you and SIM effort

Still in pursuit of the proper container. So far, plexiglass and hard plastic (PBA free) food and drink containers take center stage in holding up 20inHg for more than 4 days without any problem. Mid level fluid containers are not recommended as anything beyond 7inHg will collapse it within a few minutes.

Good and bad:

Quick lid containers used for food storage 64oz size. This one is great for instaling valves of all kind due to the large flat lid surface. It can store gears for on the go if needed. However, it requires two large lid orings just to create some measurable seal. The large o-rings are cheap, but leak can form. A thicker lid o-ring will be awesome. I contacted the company to ask if they made 3 to 5mm thick o-rings. If they do, this is a perfect container. It goes up all the way to 30inHg. Do know that since it's plexiglass, care is truly needed. If the company comes back that ther is a very thick o-ring, this unit can be fitted with quick disconnector like what the MityVac has by using a tap drill. I'm crossing all my fingers and toes for good news. It will be a clean and perfect system.



Hard plastic drink container, 64oz size. This was the one that went BOOM! at 40psi, or into the 80inHg in positive pressure. Negative pressure at 20inHg for 4 days, no problem. However, because the installation surface is not flat like the, installation suffers with slight leakage. Using neoprene crush washers is not helping. Using either silicone or hot glue will fix this. This makes it unsightly as a result. So far, it's the best one right off line. Vey easy to drill, flexible and forgiving during installation, and very sturdy under vacuum pressure. On top of that, it's an extremely shatter resistant bottle. I lost count on how many time I dropped this thing running back and forth doing dry and wet testing.



Cheapy moderate plastic container. Not even worth discussing. The moment it hits 7inHg, the body imploded.

Further strengthen the seals using either silicone glue or hot glue. I use silicone glue and place a nice ring around it. Works super well to deal with warm and chemically laden municipal water supply. This allows more than enough time to work with before the silicone glue harden and cure. The neoprene washer with the silicone glue will go underneath the barb fitting.



Using the pliers to hold the 1/4in fitting to smash the neoprene washer and silicone glue into place. The silicone glue will take up to 30 minutes to cure before usage. Never over tighten. Just enough to squish the glue into place to seal everything.



Left side is hot glue to seal the top. Right side is silicone glue to seal the top. We'll see which one works better after 30 days of usages.



Using more sensitive pressure gauge to measure both negative (vacuum) and positive (air pump) pressures. Close to 24 hours later, maintaining at ~12inHg. No leak, no implosion, no structural compromise.

This set up is to put a gauge between the penis cylinder and the reservoir. This reservoir is a straight through reservoir, meaning the pressure between the cylinder and the reservoir is constantly monitored. I'll get another container and create a gauge monitoring only the pressure coming from the cylinder using a one way valve.

This set up works for all Bathmate models that use the hand pumps, including the MityVac, and come with silicone tubing with 1/4in (6mm) inner diameter (ID). No need to purchase anything else.

The new bottle will use a different mod approach to prevent air pressure loss while you empty the water. It's not needed, but it's just fun for me.