





🔧 Upgrade your condensate system with the check valve pros trust!
The Little Giant CV-10 Check Valve is a precision-engineered replacement part for select Little Giant condensate pumps, designed to prevent water backflow and rapid pump cycling. Constructed from durable acetal, nitrile, and Buna-N materials, it fits 1/4-inch MNPT to 3/8-inch barbed vinyl tubing, operating reliably under pressures up to 290 bars. Its compact size and easy installation make it an essential upgrade for extending pump lifespan and ensuring efficient condensate removal.
































| ASIN | B000WR50VA |
| Assembled Diameter | 0.72 Inches |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #26,436 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Check Valves |
| Brand | Little Giant |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,015) |
| Cutting Diameter | 0.72 Inches |
| Date First Available | February 17, 2007 |
| Exterior Finish | painted |
| Global Trade Identification Number | 00010121990654 |
| Included Components | check valve |
| Inlet Connection Size | 0.25 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.317 ounces |
| Item model number | 599065 |
| Manufacturer | Franklin Electric Co., Inc. |
| Material | Acetal, Nitrile, Buna-N |
| Maximum Operating Pressure | 290 Bars |
| Measurement System | inch |
| Number of Handles | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.38 Inches |
| Outlet Connection Type | Barb |
| Part Number | 599065 |
| Pattern | not_applicable |
| Shape | circle |
| Size | 1/4-inch MNPT x 3/8-inch Barbed |
| Style | Modern |
| UPC | 010121990654 |
| Voltage | 110 Volts |
| Warranty Description | 1 Year Limited Manufacturer |
| Wattage | 200 watts |
2**C
Gets the job done
A little pricy for what it is, but it gets the job done. The check ball in my old valve had swollen with age and the pump had to work long and hard to push the condensate past the swollen ball. I thought about saving a few dollars by just removing the ball from the old valve and then installing an inline check valve in the discharge tube but, as they say, "time is money" and additionally, an inline check valve would also mean 2 more connections (potential leaks) in the discharge tube. This was definitely the better way to go.
R**G
Ricky
Good product
E**E
Solved my problem and saved money
Our pump was not working and was shutting off our AC. I was going to buy a new one. I’m taking it all apart I wanted to see why it wouldn’t pump. Took this check valve out and it pumped like crazy. Tried to blow through valve and nothing. Took it apart and the ball had started to disintegrate. Still figured I had to buy a pump but found this. Inexpensive fix and back in business.
M**L
Replaced a broken valve
Yes!! Our check valve broke off because of bad placement of pump and the drain tube was old and getting stiff. Thought I had to buy a whole new pump but this replaced the old one that broke with no issues. Our pump is a Wayne pump and they don’t make them anymore and are hard to find. This was an easy fix. Bought two just to have another one on hand.
J**R
Does two jobs, does both well
I only gave it four stars because everybody automatically assumes fives stars are fake? Anyway, I have zero complaints with this little guy. It keeps the water inside of it on both sides, and it keeps water from going backwards. I no longer have to go out and empty my dehumidifier twice a day, and that alone makes this thing worth the money.
R**B
Great site for Little Giant parts.
Perfect fit just as advertised.
D**K
Did the job
Fixed my pump.
S**R
Works perfectly!
Nice replacement part for the condensate pump. Great to be able to order the part, have it shipped to your door and at a great price. Works perfectly!
D**.
Versand könne etwas schneller sein (aber das lag vermutlich am Jahreswechsel und Feiertag) sonst alles top!
T**D
The central heating run off tank drain valve
M**B
The installation man suggested a new pump which cost is from $150 to 350. We just replaced the valve that fits several pumps and can use it without purchasing a new furnace water pump. I don’t understand, why a contractor would suggest a new pump instead of ordering the valve, which he could do himself and charge a double cost, which would be acceptable. The cost of the valve was only $10 and it was replaced with no problem !!!!!
F**H
Replacing a failed part on Little Giant condensate pump. Delivery from USA amazingly swift.
D**H
My husband wanted me to order this since the pricing was so good. He said it is exactly what he was looking for and would do the job.
Trustpilot
3 days ago
2 months ago