Quote Originally Posted by jmvotto View Post
I believe this is MLA authorship , but I have done one and it's easy peasy.

https://forum.moomba.com/showthread....highlight=vent
Yep, thats it in a nutshell. Forgot I had posted that here.....March seems like forever ago!

Well that's cool to see you own work getting passed around the internet

This works great when a standard sac doesn't have enough fittings, such as if you wanted to do a dual-pump system or if the sac's ports just aren't in the best spot for your application once the sac is in an filled.

The Flow-Rite fittings come in both .75 and 1 inch 90* elbow and straight. Its an easy mod that can be done to any ballast sac, but there are a couple of tricks I have learned with the more I've done.

Adhesive: Rubber cement. Anything that's silicone based will stay pliable and can allow the fitting to slip under load.

Hole size: Round and I tend to find it requires about .125" dia larger then the dia of the threaded portion of the fitting for the flange to fit through.

Having the sac at room temp, or even warmed a little with a hair drier or heatgun on low. This helps to allow the sac to stretch so flange will slip through. I always test fit before applying the adhesive.

I like to inflate the sac while working on it. Some air will escape once the hole is cut, but it still make working easier then when done on a flat sac.

Use a small but sharp razor knife.

When you are ready to install the fitting, lay both the fitting and the flanged nut clamping surface up. Apply the cement to both. Slip the fitting into the hole. While holding it with one hand at the threads, drop the nut over the end of the fitting and start the threads a couple turns. Now move your hand to the end of the fitting and finish threading the nut down until it seats. Turn it hand tight then finish with a pair of slip-joint pliers and turn an additional 1/8 turn.

Top the sac off with air, cap the fitting with tape, then let it set to allow the cement to cure.

Let em know if any one has a specific question.