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Zoeller 30-0021 - 2" x 2" Slip-On Full Flow Sewage & Sump PVC Check Valve

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Zoeller Sump Pumps and Accessories
Model: 30-0021
(Based on expert analysis, manufacturer ratings and customer reviews)
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5
13 Reviews
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  • Features
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  • 1
    Q&A 
  • 13
    Reviews
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  • Accessories
PVC Sewage Check Valve
Prevents back flow of water and sewer gas

Extra Wide Flapper Hinge
Prevents hinge stress and extends the life of the valve

Full Flow Design
Rated at 25 PSI pressure (57 ft. of head) 130 F max

2" x 2" Slip-On Design & Includes Clamps
Flexible neoprene union
Slips over ABS, PVC, steel or copper pipe

Versatile Design
Allows for vertical or horizontal installation


Pump
Discharge Port Size
2 Inch
Overview
Weight
2 Pounds
Product Length
10.25 Inches
Product Width
3.75 Inches
Product Height
3.75 Inches
UPC
053514027049
Model
30-0021
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  1 Question
Q: Is there a check valve that can be mounted horizontally and not leak back.. I,have a,battery backup,pump with a horizontal pipe,with a check valve that leaks back slowly when the primary pump shuts off. I would like to resolve it.,if I change the check valve it doesn't leak,for a short time then begins to leak back. Maybe scale or debris keeps from sealing or gravity allows the flapper to open slightly. The water column is about 5 ft up before an elbow to the outside horizontal run to storm sewer.
Could it be the position of the check valve maybe needs to be rotated so the flapper is hanging down verticle?

by Patrick O from Michigan on December 01, 2014

A: To start off, each pump should have a check valve installed inline. The Zoeller 1-1/2" and 2" slip-on check valves can be mounted in a horizontal position. The pivot point of the flapper however, should be in the top position. It is also possible that there is some foreign debris or scale that is preventing the valve from closing completely, thus causing the leaking. How old is this check valve? They should be replaced every 5-7 years or whenever you replace your pump as they will also wear out over time.
If you have additional questions, please let me know.
by Jim, Product Expert
Zoeller 30-0021 Reviews & Ratings
Overall Rating
Features
5/5
Quality
5/5
Performance
5/5
Value
5/5
Overall
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5
Pros
Easy To Use (4)
I'd Buy It Again (3)
Durable (3)
Reliable (2)
Price (2)
Cons
Expensive (2)
Quality Control (1)
Durability (1)
Unreliable (1)
100% of respondents would recommend this product to a friend
13 Reviews  Sort by 
 
Randy F.
Peoria, AZ
Purchased from Sump Pumps Direct
Purchased 5/9/17
Total Reviews
2 Reviews
Most Helpful Positive Review
REVIEWED
MAY.
31
2017
5 out of 55 out of 55 out of 55 out of 55 out of 5
Good Valve
This appears to be a very well built and sturdy valve. Much better than the one I replaced. Very happy with it. Zoeller is high quality.
Pros: Durable, I'd Buy It Again, Price, High Quality
Randy Recommends This Zoeller Product
Randy's Experience With Sump Pumps Direct
Web Site
5/5

Service
5/5

Shipping
5/5
"Professional and polite employees who actually answer their phones. I will not go anywhere else for my future pump needs."
 more
Was this review helpful?
01
Thomas L.
Somers, IA
Purchased from Sump Pumps Direct
Purchased 4/27/17
Most Helpful Critical Review
REVIEWED
JUN.
09
2017
3 out of 53 out of 53 out of 53 out of 53 out of 5
I've Had Problems!
The check valve quit about 15 months after installation. Bad connection between the flip valve and it's rubber gasket.
Cost almost $100 to get replacement and installation. I fixed the original, so that I now have a replacement. Also purchased another check valve to have on hand. The original construction was weak and didn't last very long.
Cons: Unreliable, Durability, Expensive
Thomas Recommends This Zoeller Product
Was this review helpful?
00
Brian R.
Duncansville, PA
Purchased from Sump Pumps Direct
Purchased 1/29/13
Total Helpful Votes
10 Helpful Votes
REVIEWED
JUL.
01
2014
4 out of 54 out of 54 out of 54 out of 54 out of 5
Great Product But...
After installing everything and doing a test pump out. I quickly discovered the factory had left the bolts between the two halves loose, major leak. I tried to tighten them while assembled but it still leaked. I had to remove it from the assembly and then tighten them. It has worked like a champ ever since!
Pros: Easy To Use, Light Weight, Reliable, I'd Buy It Again
Cons: Expensive, Quality Control
Brian Recommends This Zoeller Product
Was this review helpful?
1022
Justin D.
Arroyo Seco, NM
Purchased from Sump Pumps Direct
Purchased 3/3/14
Total Reviews
2 Reviews
Total Helpful Votes
11 Helpful Votes
REVIEWED
MAR.
14
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Perfect Replacement Check Valve
I had a plastic, permanently attached to the in-and-out pipes, check valve. When I replaced my pump I also replaced the check valve. I chose the Zoeller 2"x2" Slip On since I bought the Zoeller pump. It was a great choice because it allowed me to adjust the height of the discharge tube without setting it in PVC cement. The rubber also allowed me to bend the discharge tube slightly so I could get it attached to the final drain. This check valve cost a little more than some of the... more
Pros: Easy To Use, Durable, Exceeded Expectations, I'd Buy It Again
Justin Recommends This Zoeller Product
Justin's Experience With Sump Pumps Direct
Web Site
5/5

Service
5/5

Shipping
5/5
"A great place to buy power equipment. For future needs I will check with PED first."
 more
Was this review helpful?
721
Mac
Rosemont, IL
Purchased from Sump Pumps Direct
Purchased 8/2/11
Total Reviews
3 Reviews
Total Helpful Votes
12 Helpful Votes
REVIEWED
AUG.
23
2011
5 out of 55 out of 55 out of 55 out of 55 out of 5
Sewage Backup
My HydroMatic had a float failure, since it was over ten years old. I decided to change it out for a Zoeller, based on my previous experience with zoeller. Zoeller has always performed outstanding and the technical support has been excellent for me.
Was this review helpful?
620
Doug
Lamar, NE
Purchased from Sump Pumps Direct
Purchased 1/17/11
Total Reviews
2 Reviews
REVIEWED
FEB.
07
2011
5 out of 55 out of 55 out of 55 out of 55 out of 5
Couldn't Ask For Better Service
The pump was exactly what we needed and what we got. It is working perfectly.

The ordering was easy and it arrived quickly. Couldn't ask for better service.
Was this review helpful?
620
Bradley L.
Hampton Beach, NH
Purchased from Sump Pumps Direct
Purchased 10/11/15
REVIEWED
NOV.
03
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Check Valve
Excellent unit...easy install...and allowed me to have some flex in my connections to align things better with pump / out flow pipe.
Bradley Recommends This Zoeller Product
Was this review helpful?
116
Rhonda P.
Oxford, GA
Purchased from Sump Pumps Direct
Purchased 9/15/15
REVIEWED
OCT.
08
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Check Valve At Even Better Price!!!
Purchased check valve from this company and it arrived before the stated date of arrival and was a lot better valve than the ones offered at the big box stores for that price.

I wish I had ordered all of the parts that I needed from here because the other company that I ordered another part from before ordering from here arrived a week late.

I also ordered a sewage pump from sump pump direct which was defected and they sent me a replacement at no charge in only one day. They are the... more
Rhonda Recommends This Zoeller Product
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116
Chet
Purchased from Sump Pumps Direct
Purchased 2/14/12
Total Reviews
2 Reviews
REVIEWED
MAR.
08
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Sewage Pump
Fast delivery. Excellent product. I wouldn't buy another brand of pump.
Was this review helpful?
419
Pete G.
Plainfield, IL
Purchased from Sump Pumps Direct
Purchased 5/31/13
Total Reviews
2 Reviews
REVIEWED
JUN.
21
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
2 Inch Check Valve
I needed an upgrade to my 1 1/2 inch check valve. This was an easy and reliable choice.
Pros: Durable, Easy To Use, Quiet, Reliable
Pete Recommends This Zoeller Product
Was this review helpful?
319
Mario
Purchased from Sump Pumps Direct
Purchased 1/17/13
Total Reviews
2 Reviews
REVIEWED
FEB.
07
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Check Valve
Works Great
Was this review helpful?
521
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