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 Preassembled Primary & Battery Backup Sump Pump Combo System | 1/2 HP, Integrated Vertical Float Switch, 12 Volt Battery Back Up Capability, 5,100 Gallons Per Hour

Product ID: 81772324

Details

Brand
Wayne
Color
Black
Item Weight
44 pounds
Material
Polypropylene
Maximum Flow Rate
85 gpm
Maximum Lifting Height
20 feet

⚡0.5 HP powerful motor

💧5,100 GPH max flow rate

🔋10,000 gallons per battery charge

KD 341.00

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Description

💧 Stay dry, stay worry-free—your basement’s ultimate water warrior!

BATTERY BACKUP BRILLIANCE - Continues pumping up to 10,000 gallons on a single charge when power fails.
UNSTOPPABLE WATER DEFENSE - Pumps up to 5,100 gallons per hour to keep your basement dry, rain or shine.
EFFORTLESS 15 MINUTE SETUP - Preassembled combo system drops right in—no drilling, no hassle.
BUILT TO LAST A MILLION CYCLES - Tested for durability with a 3-year warranty—peace of mind guaranteed.
QUIET EFFICIENT PROUDLY USA MADE - Ultra-quiet operation with premium polypropylene build, assembled stateside.

The Wayne Preassembled Primary & Battery Backup Sump Pump Combo System features a robust 0.5 HP motor delivering up to 5,100 GPH, with a battery backup capable of pumping 10,000 gallons on a single charge. Designed for quick installation in 15 minutes without drilling, it fits standard 16” sump basins and is tested for 1 million cycles. Made from durable polypropylene and assembled in the USA, it offers ultra-quiet, reliable basement flood protection backed by a 3-year warranty.

Specifications

ASIN	B07H4S6X9N
Best Sellers Rank	#64,516 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #113 in Sump Pumps
Brand Name	Wayne
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (826)
EU Spare Part Availability Duration	3 years
Flow Rate	85 gpm
Global Trade Identification Number	00040066218506
Horsepower	0.5
Included Components	combination system
Item Dimensions L x W x H	13.5"L x 9"W x 15.5"H
Item Type Name	1/2 HP and 12-Volt Battery Back Up System
Item Weight	44 pounds
Manufacturer	Wayne
Manufacturer Part Number	50004-WYN1
Manufacturer Warranty Description	3 year manufacturer
Material Type	Polypropylene (PP)
Maximum Lifting Height	20 feet
Model Number	WSS30VN
Number of Items	1
Power Source	Corded Electric with Battery Backup
Product Style	Standard System with Back Up
Specific Uses For Product	basement flooding
UPC	040066218506
Unit Count	1 Count
Voltage	12 volts

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TrustScore 4.5 | 7,300+ reviews

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KD 341.00

Duties & taxes included

In stock

Sold byAmazon KUWAITDelivered 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 KUWAIT.

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TrustScore 4.5 | 7,300+ reviews

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