Blog
Does Dumping the Black Tank 1st & the Gray Second, Clean the Hose?
Every RVer knows that dumping the Black water, then the Gray water is to insure any residual Black water will be flushed down with the Gray water---but is this really true? After we answer this age old question, stay tuned for information on the best sewer hose we've...
Ever Get Sewer Gas Smell Inside your RV? Time for a P-Trap
If you have ever experienced that unmistakable smell inside your RV, you absolutely know it is not supposed to be there EVER! Why it came into the living space of your coach is in all probability for one or two reasons. If you have been travelling down the road when...
Creative Ways to Install Drain Master in the Proper Position
We have talked about valve positioning in the past and most manual valve failures can be contributed solely to the position the valve body is in, in relation to the pipe it is located in. Keeping the valve body over the piping, as opposed to beside or under the...
Prevent Plugged Holding Tanks with the Biffy Bidet!
We have been carrying a product called the Biffy for the past 4 years and it is an attachment that turns any toilet into a Bidet. A bidet is used for personal hygiene and extremely popular in Europe and more and more in high end homes in the US and Canada, as we...
Not Happy with Cable Pull Valves? Electric Valves- A Better Solution
The RV industry standard dump valve found on most RVs, especially 5th wheels is a manual cable pull style, knife gate valve. Most people have issues with them within the first 6 months, and the first indication is when they remove the sewer cap to install the sewer...
Dump Valve Size and Why we Don’t Make an 1.5″ Valve
Have you ever wondered why a lot of RVs use a small 1.5" valve on the gray water tanks? We spent considerable time asking RV manufacturers that question a number of years ago while in the process of designing a true 12vdc electric dump valve. (Prior to this all other...
3 Ways to Prevent a Plugged Black Water Holding Tank
As anyone who has experienced a plugged tank will attest, it is not fun and can be extremely difficult to clear without making a big mess! To prevent you from ever having to experience this unfortunate situation (or other black holding tank issues) you will need to...
Terminals on the back of the HD Switch—Do NOT Touch!
Every so often we have a customer call, like Mr. Kelly who had bought a new 5th wheel, that came with our Drain Master valve system, as a standard feature with the Drain Master switch. He discovered that the factory had either mislabeled the switches or connected the...
HepvO Waterless P-Trap, How big is it?
Frequently folks call and ask us how big the HepvO waterless P-trap is. HepvO complete kit The HepvO can be installed both vertically or horizontally. If you are not familiar, The HepVo Waterless Valve replaces the old P Trap with a short tube and internal...
How Does that LED light in the switch work on the Drain Master?
How does that red LED light on my Drain Master switch work? We are asked this by customers about 5 times a week. So we thought it might be a good idea to explain how in detail here. In simple terms if the light is on, the valve is open (to some degree.) If it is...

