Is it ok to connect to the primary pumps PVC before the check valve, eliminating the need for 2 check valves?

No, you need a check valve for each pump. This happened to my sump pump installation: Over time, the flapper (acts like the valve) in the check valve deformed a little, detached from its hinge point(s), and ended up in the FRONT part of the body. This meant that when water was being pumped out of the sump, the water forced the flapper into the check valve opening... BLOCKING the flow! The check valve ended up working backwards, basically. With the water unable to flow, after enough time, the sump pump burned itself out. If two pumps are feeding through just one check valve, the same thing could happen to both pumps. Each pump needs its own check valve. It's OK for the discharge lines to merge afterwards. BTW: If you really depend of a reliable sump pump installation, spend the extra $30-$50 bucks and get a couple of industrial-strength check valves (regardless if you have a single or double-pump system). They will be "out of sight and out of mind" parts of your installation; you need to KNOW that they'll last!

What size pvc pipe goes into the single fitting at the top of the unit,and what method are you using to attach it? Thanks

I glued a three-foot section of 1-1/2" PVD pipe to the wye-fitting at the top of the pump assemble. At the top of the three-foot section I used an 1-1/2" Fernco rubber coupler with stainless steel clamps to connect it to the drain line. You're going to love this pump. It's the quietest pump I've ever heard.

Can anyone please recommend a battery to purchase for this unit?

I installed a VMAX 127 deep cell battery. It provides between 36-48 hours of pumping capacity. Cost ~$300. I recommend you don't go cheap on the battery.

does this pump come with a battery

The pump does not come with a battery.

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WAYNE 12 Volt Battery Backup Sump Pump Coated Steel ESP25n

Product ID: 81568418

Details

Brand
Wayne
Color
Black
Material
Cast Iron
Style
ESP25 battery
Product Dimensions
17"L x 10.5"W
Power Source
Battery

⚡12V battery-powered backup

💧2,700 GPH max flow rate

🛡️Epoxy-coated steel & cast iron durability

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Description

💧 Don’t let a blackout flood your basement—power through with Wayne’s unstoppable backup pump!

BUILT TO LAST - Epoxy-coated steel housing and cast iron base ensure corrosion resistance and long-term durability.
COMPACT EASY FIT - Designed to fit 14” diameter sump basins without drilling, making installation seamless and hassle-free.
RELIABLE POWER BACKUP - Stay dry when the grid goes down with a robust 12V battery-powered pump system.
SMART ALERTS PROTECTION - Integrated LED display and audible alarm keep you informed of battery or pump issues in real-time.
HIGH CAPACITY WATER REMOVAL - Pumps up to 2,700 gallons per hour, evacuating 10,000 gallons on a single charge—ultimate flood defense.

The WAYNE ESP25n is a heavy-duty 12V battery backup sump pump designed for indoor use, delivering up to 2,700 gallons per hour to protect basements during power outages. Featuring a corrosion-resistant epoxy-coated steel housing with a cast iron base, it fits standard 14” sump basins without modification. The system includes a protective battery case with LED and audible alarms for real-time monitoring (battery sold separately). Proudly assembled in the USA, it offers a 2-year warranty and quiet, efficient performance for peace of mind when it matters most.

Specifications

Asin	B07GJXRZ1V
Best Sellers Rank	#48,731 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #223 in Water Pumps, Parts & Accessories
Brand Name	Wayne
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (1,545) 4.5 out of 5 stars
Flow Rate	45 gpm
Global Trade Identification Number	00040066218483
Horsepower	0.5 hp
Included Components	Back up pump, battery box, reed float switch
Item Dimensions L X W X H	17"L x 10.5"W x 14"H
Item Highlight	2,700 GPH Submersible Reed Float Switch Automatic Water Removal Basement Flood Protection 2-Yr Warranty
Item Type Name	WAYNE ESP25 Upgraded 12-Volt Battery Backup System
Item Weight	13.5 pounds
Manufacturer	WAYNE
Manufacturer Part Number	58368-WYN1
Manufacturer Warranty Description	2 Year Limited
Material Type	Coated Steel, Thermoplastic
Maximum Lifting Height	15 feet
Model Number	ESP25n
Number Of Items	1
Number Of Packs	1
Power Source	Corded Electric & Battery Powered
Product Style	Back Up Only
Specific Uses For Product	Basement Water Removal, Flood Prevention, Rainy Season, Snow Melt, Indoor Use Only.
Unit Count	1 Count
Upc	040066218483
Voltage	12 volts_of_direct_current

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All products are sourced from US, UK, and UAE. Our prices include international shipping costs, customs duties, payment processing fees and logistics handling to ensure smooth delivery to India. We handle all customs clearance so you don't face any hidden charges later.

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₹ 56874

Duties & taxes included

In stock

Sold byAmazon IndiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to India.

Secure transaction

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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