Basementsaver Backup Sump Pump Selection Tool - RESULT

Tim Harnois
Master Plumber & Owner of +Aquamedic

Are You confused? If You need help selecting the best backup sump pump for Your specific basement, just follow the process in the yellow box and feel free to call or e-mail me if you have any questions:

Backup Sump Pump Guide

Backup Sump Pump Selector
Size 1 Water Powered Sump Pump Models

Your optimum choice will be to install a Size 1 water powered sump pump. You have 4 models to choose from:

RECOMMENDATION 1 - You are ideally configured to install a Size 1 water powered backup sump pump. Your optimum choice is probably a Basementsaver WP1 Water Powered Backup Sump Pump (removes up to 900 gph).

Note 1 - WP-Series pumps are designed with intrinsic backflow prevention to protect Your city water supply. However, if Your water department stipulates 'approved' backflow prevention - see Recommendation 2 below.

Note 2 - WP-Series pumps are designed for application with normal city water supply (in the range 40 - 95 psi). If You suspect that You have abnormally high water pressure, exceeding 95 psi, see Recommendation 3 below.

RECOMMENDATION 2 - If Your city water department requires 'approved' backflow prevention, choose the Basementsaver WPA1 Water Powered Backup Sump Pump With 'Approved' AVB, which features similar performance to the WP1 unit, but includes an integrated 'approved' Atmospheric Vacuum Breaker (AVB) to ensure protection of your city water supply.

RECOMMENDATION 3 - If Your city water pressure exceeds 95 psi You cannot use a WP-Series or WPA-Series model. Instead, Your optimum choice is either:

The Effect Of City Water Pressure On Water Powered Sump Pump Performance

Normal City Water Pressure (40 - 95 psi):
For WP-Series Water Powered Backup Pumps and also WPA-Series Water Powered Backup Pumps, the volume of water removed from Your sump pit depends on the city water pressure that is supplied to the backup pump ejector unit. The higher your city water pressure, the higher the pumping rate that can be achieved (up to 95 psi - the recommended maximum operating pressure for WP-Series and WPA-Series pumps).

Pumping rates are presented below (in gallons per hour, gph), assuming a typical 10 ft lift to discharge (pumping rates decrease as lift to discharge increases, but the decrease is only minor up to about 15ft of lift):

Very High City Water Pressure (75 - 150 psi):
For city water pressures exceeding 95 psi we have designed the HP-Series Water Powered Backup Sump Pumps and HPA-Series Water Powered Backup Sump Pumps with 'Approved' AVB Backflow Preventer. When operating at city water pressure in the range 95 - 150 psi, the volume of water removed from your sump pit by these high pressure water powered sump pumps is essentially constant (equaling or exceeding the maximum performance of an equivalent WP-Series pump).

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Advanced Water Powered Sump Pump Rated For City Water Pressures 40 - 95 psi