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



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

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Expert Recommended Accessories Selected by Jim, our Expert
Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10


  • 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 4.3 PSI pressure (10 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
California residents see
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
For more information go to: www.p65Warnings.ca.gov


specs product image PID-5049
Discharge Port Size
2 Inch
2 Pounds
Product Length
10.25 Inches
Product Width
3.75 Inches
Product Height
3.75 Inches


Zoeller 30-0021 Reviews & Ratings

Product Q&A

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Product Questions Answered by Jim, the Water Pump Expert
How often do you recommend changing check valves on this model?
Gene K. 
from Illinois 
November 06, 2017
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?
Patrick O 
from Michigan 
December 01, 2014

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