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Mars 21787 Check Valve Replacement Kit

SKU: 246460
   based on 2 Reviews
Save 54% · Retail: $14.00

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Nevada Warehouse
Ships in 3-4 Days
$6.46/ea 2
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Available to Ship in 2-3 weeks

About the Mars 21787


Product Details

Manufacturer: Mars
Product: Check Valve
Mpn # 21787
Weight 0.02 lbs.


Rated 5 out of 5 based on 2 reviews

 Rated 5 by nbc contracting nbc c.

Originally posted on Jan/2017

 Rated 5 by Mirinda P.
It was just what we needed easy to change out and fixed all of our problems
Originally posted on Apr/2017

Questions & Answers

Anonymous responded:

The duck bill goes up away from the pump, as to let water leave but not return.


Hi, there! Thank you for your question. The processing fee for orders worth less than $20.00 is $9.95. You can also contact our customer service representatives at 435-868-4020 or E-mail them at Thank you and we hope to see you here again at


Thank you for your interest in the Mars 21787 Check Valve Replacement Kit! The Mars 21780 is a condensate pump with a Quick Release check valve. Please refer to the manufacturer’s catalogue if you have more questions. For availability inquiries, or to better understand lead and ship times, please contact one of our knowledgeable customer service representatives @ 435-868-4020 between 8:00 AM to 7:00 PM MT or through e-mail @ You can also sign up for our Newsletter!


Hello! In response to your inquiry about the Mars 21787 Check Valve Replacement Kit, yes, this will fit the Mars 21786 lift pump. Please see the specification sheet under "Resources" for reference. If you're interested in purchasing the Mars 21787, simply click "Add to Cart" and enter the required information and you'll be all set. Please don't hesitate to contact us if you have any further question about this check valve. We thank you for choosing


Thank you for asking us at about the Mars 21787! Yes, this kit fits the Mars 21780 condensate pump. To begin the ordering process, please click the Add to Cart button, enter your zipcode and your billing information, and we will take care of the rest. Please refer to the specification sheet if you have more questions about the Mars 21787. Happy Shopping!

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