Basementsaver WPA1 & Basepump RB750-AVB Water Powered Backup Sump Pumps With Atmospheric Vacuum Breaker Backflow Prevention
Basementsaver WPA1 & Basepump RB750-AVB are Size 1 pumps designed to work in most residential basements with normal sump flow and normal (40-90psi) city water pressure. These ultra-reliable emergency water powered backup sump pumps remove up to 900gph and come with integrated Atmospheric Vacuum Breaker (AVB) backflow preventers.
Purchasing Basementsaver or Basepump?
Whichever brand of Size 1 pump you choose to purchase, you will receive exactly the same pump unit, components, accessories, technical support, and 5 year warranty. However, we are able to offer FREE US Mainland Shipping, and subsidized shipping to Canada, on all Basementsaver Branded Pump purchases.
DELIVERY TO ADDRESSES IN MAINLAND USA:
Basementsaver WPA1 Pump With AVB
Basepump RB750-AVB Pump With AVB
DELIVERY TO ADDRESSES IN CANADA:
Basementsaver WPA1 Pump With AVB
Basepump RB750-AVB Pump With AVB
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All Prices are quoted in US Dollars.
All Basementsaver and Basepump models utilize the same shipping service, but we are able to subsidize shipping costs on the Basementsaver models.
For Shipping Estimates To AK, HI, US Territories, & Other Countries: please e-mail firstname.lastname@example.org.
Basementsaver WPA1 & Basepump RB750-AVB Backup Pump Features
The Basementsaver WPA1 and the Basepump RB750-AVB are exactly identical pump units that represent the most advanced water powered sump pump technology currently available:
Water Powered Pumps use water flow from your city water supply to remove up to 900gph from your basement sump.
Ultra-Reliable Backup Pump Technology with no battery to maintain, and no moving components to wear out.
Automatic Operation pumping only when necessary to keep your basement dry.
Unlimited Run Time so long as you have 40psi or more city water pressure available.
Highly Efficient ceiling mounted pumps remove 2 gallons from your sump for every gallon of city water used.
Heavy-Duty Schedule 80 Polypropylene Construction is highly resistant to the corrosion, and repels the fouling, that usually degrades the performance of most pumps over time.
Simple DIY Installation with fully illustrated step-by-step pump installation instructions.
FREE Independent Water Alarm included with every Basementsaver WP1-EZ and Basepump RB750-EZ pump.
30 Day Money-Back Guarantee and 5 Year Limited Warranty on every WP1-EZ and RB750-EZ pump.
WPA1 / RB750-AVB Backup Pump Operation
When water in your basement sump rises above the normal control range provided by your primary sump pump, your backup pump automatically starts pumping until the sump water is reduced sufficiently to lower it’s float below the trigger level:
Excess rising water in your basement sump lifts the backup pump Float
The backup pump float activates a Hydraulic Valve on the pump unit that allows city water to run through the Ejector.
Each gallon of city water flow through the backup pump ejector creates sufficient suction to pull 2 gallons of water from your sump up the suction tube.
A Check Valve on the pump body prevents water from returning back down into your sump.
The 2 gallons of sump water mix with the 1 gallon of city water as they discharge together out of the backup pump ejector into the discharge pipe and out of your basement.
Basementsaver WPA1 & Basepump RB750-AVB Pump Model Comparison
The Basementsaver WPA1 and the Basepump RB750-AVB pump units are both assembled by Basepump, with identical components, on exactly the same production line, in Buffalo, NY.
Basementsaver WP1 / Basepump RB750 Standard Residential Backup Sump Pump Pumps Up To 900gph
AVB Models Include Atmospheric Vacuum Breaker Backflow Prevention Devices
The Basementsaver WPA1 / Basepump RB750-AVB is a WP1 / RB750 pump unit that comes with an integrated brass Atmospheric Vacuum Breaker (AVB), ASSE 1001 listed, CSA 64.1.1 certified, and IAPMO listed, mounted on the downstream side of the backup pump main control valve.
This model is required for installations in the following states:
The WP1 / RB750 is our Standard Residential water powered backup pump model, providing 900gph maximum pumping capacity through a 10ft lift at 90psi city water pressure. This Size 1 pump is designed for application in most residential basements that can provide a city water supply at a pressure in the range 40-90psi.
The integrated AVB requires that this backup pump model must be installed on a dedicated discharge line. It must not be used when the backup pump is required to share the same discharge pipe as the primary sump pump.
The WPA1 / RB750-AVB pump will operate in your basement if your outside standard hose spigot can supply water at a sufficient flow rate to fill a bucket to the 5 gallon level in 40 seconds or less (allow 25% longer for a frost-proof spigot).
Basementsaver WPA1 / Basepump RB750-AVB
What You Get In The Package & What Else You Need
Here’s What You Get In The Package:
Basementsaver WP1 / Basepump RB750 Water Powered Sump Pump Unit
Integrated Brass Atmospheric Vacuum Breaker (AVB) to provide “approved” backflow prevention for your city water supply
PVC check valve to prevent reverse flow down the suction pipe to your sump
Backup pump float, transfer tube, and filter screen
PVC fittings, mounting clamps, screws, and cable ties
1/2″ or 3/4″ Pipe & fittings to connect city water feed to the pump ejector
Ball or gate valve, union fitting, female adapter to connect to male threaded fitting on pump unit
10ft or more of 1″ diameter PVC pipe to form the Suction Pipe between the pump and your sump
PVC pipe cleaner, cement and PTFE pipe thread sealant tape
WPA1 / RB750-AVB Water Powered Backup Sump Pump Installation
The Basementsaver WPA1 and Basepump RB750-AVB both come with Fully-Illustrated, Step-By-Step, Installation Instructions and may be easily installed by any homeowner with moderate DIY capability and a few common tools.
The WP1 / RB750 backup pump Ejector unit installs on a rafter in your basement ceiling, above your sump pit, with a vertical suction tube running down from the pump body into your sump. A hydraulic float is attached to the suction tube inside your sump, above the level of the water surface that is normally maintained by your primary sump pump.
Water Power is provided by permanently connecting a pipe from your city water supply into the pump unit, and sump water is discharged into the discharge pipe exiting to the outside of your home.
You MUST provide the WPA1 / RB750-AVB unit with a dedicated discharge pipe.
You must NOT allow the WPA1 / RB750-AVB to share the discharge pipe for your primary sump pump, or water coming from the primary sump pump will leak into your basement via the AVB!
Alternative Backflow Prevention & Pumping Capacity Specifications
Alternative WP1-EZ / RB750-EZ models come with brass shut-off valves, Dual Check Valve (DCV) backflow preventers to meet most local plumbing department codes, and Easy-Fit push fittings to simplify connection of the pump unit to your water supply line.
Competitor Water Powered Backup Pump Performance Comparison
Min Sump Size3
McDonald Guardian 747H2O
Zoeller Homeguard 503
Published Pumping Rate data for 50psi motive pressure and 9-10ft lift to discharge.
Published Efficiency data for sump gallons removed per gallon of city water used at 50psi motive pressure and 9-10ft lift to discharge.
Minimum Sump Diameter Required for backup pump to function correctly.
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With Discount Pricing & FREE (US Mainland) or Subsidized (Canadian) Shipping
If You Ever Need Help Just e-mail Basementsaver Or Call 716.775.0206