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gray water system

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S3VT Pro-Series Replacement Drain Master 3″ Valve
$269.70 SKU: 6009

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Outlet Hose Kits (2)
Pro-Series Smart Valves (38)
Premium Electric Valves (10)
Valve Accessories (12)
Sewer Hoses and Storage - Motorhomes (17)
Sewer Hoses and Storage - 5th Wheels (20)
Hose Replacement Parts (18)
360 Roof Vents (2)
Waterless P-Trap (3)
Holding Tank Treatments (10)
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Contact Info

Drain Master
400 Park Center Dr. Suite 6
Hollister, CA 95023

Toll Free: (877) RV STUFF
Phone: (877) 787-8833
Local: (831) 636-9775

7:30-4:30 Pacific M-F

Thank You (2)

About Drain Master

We specialize in premier, precision engineered RV Waste Management Products. Have a question related to dumping your tanks? We’ve got the answer!
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Watch how fast our Premium Electric Valves get the

Watch how fast our Premium Electric Valves get the job done ⚡️💧
A quick tap, instant response — open, close, and you’re on your way. No sticking. No struggling. No guessing.

When it comes to dumping your tanks, speed and reliability matter… and our Premium valves deliver every time.

Ready to upgrade your setup? 😉

#DrainMaster #PremiumValves #RVLife #RVUpgrades #WasteSystemMadeEasy

🦃 Happy Thanksgiving from your Drain Master family

🦃 Happy Thanksgiving from your Drain Master family! 🦃

Today we’re especially grateful for YOU: our amazing customers who trust us when dumping your tank!

May your plates be full and your time with loved ones be absolutely priceless.
Enjoy the feast, the football, and the naps; we’ve got the waste covered!

With gratitude,
The Drain Master Crew 💚

#HappyThanksgiving #DrainMaster #GratefulForYou #TrashTalkTurkey

Nothing makes us prouder than hearing how our syst

Nothing makes us prouder than hearing how our systems make life on the road simpler, faster, and stress-free.

“The system is so simple and works amazing… and the customer service is amazing!”

From smooth installs to quick-draining tanks and support that actually shows up — we’re here to make sure your RV waste system works exactly the way it should. 💚🚐

Read the full review👇
“We had a complete RV holding tank electric waste gate valves, 3 inch drain pipe from the holding tanks, the storage box and much more installed on our DRV Mobile Suites Houston. I Love my Drain Master system and am so glad we put our faith in the company and its three amazing employees! The system is so simple and works amazing and the gray tank drains so fast going from a 2 inch pipe to a 3 inch pipe. While we were there we purchased a supplemental part to screw into the standard RV sewer system to go along with our complete Drain Master System and extra hose. Once we got back to the RV park to dump for the first time I realized that the extra part we purchased did not fit correctly. I contacted Cheryl at Drain Master and without hesitation she said she would mail one out to us at no cost. She later said that she insured the fit was snug before she shipped it out. This was all within 24 hours of reporting the issue to her. This is just one example of why Drain Master is the only one to go to for sewer solutions in RV’s!! The customer service is amazing!!”

#DrainMaster #RVWasteSpecialists #RVPride #RVLife #CustomerReview

Meet the hose head that does it all. 👇 The Waste

Meet the hose head that does it all. 👇

The Waste Master’s secure, locking nozzle keeps your connection tight and mess-free, while the built-in on/off handle gives you total control during every dump. And that clear viewing section? It lets you see exactly when the job is done — no surprises, no second guesses. 🚐💪

The smarter, cleaner way to dump.

#rv #rvlife #rving #camping #campingtips #fulltimerver #motorhome #5thwheel #toyhauler #traveltrailer #rvwaste #drainmaster #wastemaster #camlock #dumpvalve #rvsewersmell #wastevalve #rvtips #rvlife #sewerhose #sewerhosestorage #rvliving #rvflippers #rvrenovators

Say goodbye to messy connections and leaky fitting

Say goodbye to messy connections and leaky fittings 👋

Our Waste Master hose is built for a cleaner, faster, and easier dumping experience every time. 💪 With an industrial-grade cam lock and smooth interior design, you get a secure, leak-free connection that makes waste management simple — and stress-free.

Once you switch, you’ll never go back. 🚐✨
#DrainMaster #WasteMaster #RVWasteSpecialists #RVPride #RVUpgrades

🚐💨 Introducing our new Bay to Bayonet Fitting! Th

🚐💨 Introducing our new Bay to Bayonet Fitting!

This smart little adapter gives Waste Master users the best of both worlds — the power of a professional-grade cam loc system *and* the option to go back to a standard bayonet connection whenever they want.

No more worrying about permanent RV modifications or compatibility — just peace of mind, flexibility, and a leak-proof setup every time. 🙌

🎥 Check out our latest video to see how it works in action!
#DrainMaster #WasteMaster #RVLife #RVCamping #RVSewerSystem #RVUpgrades

It’s our dirty little secret 🤫 Dump your tanks w

It’s our dirty little secret 🤫

Dump your tanks with the push of a button 💡 Our Pro-Series Electric Valve Switch lets you take control right from your RV—no more bending, pulling, or getting your hands dirty. Convenience meets reliability with every press!

#rv #rvlife #rving #camping #campingtips #fulltimerver #motorhome #5thwheel #toyhauler #traveltrailer #rvwaste #drainmaster #wastemaster #camlock #dumpvalve #rvsewersmell #wastevalve #rvtips #rvlife #sewerhose #sewerhosestorage #rvliving #rvflippers #rvrenovators

Another happy RVer making dumping simple, clean, a

Another happy RVer making dumping simple, clean, and stress-free 🙌 Our Waste Master® system delivers reliable performance and plenty of reach—no extra extensions needed. 💪

#WasteMaster #RVLife #DumpingMadeEasy #RVUpgrade #DrainMaster

Say goodbye to the hassle and mess 👋 Our Waste Mas

Say goodbye to the hassle and mess 👋 Our Waste Master® storage system keeps your hose secure, clean, and ready to go—making tank dumping faster, easier, and stress-free every time. 🚐💧

#RVLifeMadeEasy #WasteMaster #RVUpgrade #NoMessNoStress #rvlife #rvliving #rvcamping #RV

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