Fernco Flap Valves

High Molecular Weight Polyethylene (HMWPE) Flap Valve Benefits:

• Superior impact and weather resistance, engineered for long-term outdoor exposure, debris strikes, and ice-loading conditions in cold climates.
• Enhanced abrasion and stress crack resistance supports long-term durability in cyclic loading and sediment-laden flows.
• Won’t rust, pit, or seize, ideal for corrosive outfall environments and submerged, tidal, and maritime installations.
• Broad chemical resistance to compounds commonly found in stormwater, wastewater, and combined sewer overflow (CSO) environments. With UV-stable material that helps resist sun-related degradation.
• Lightweight when compared to cast iron or stainless designs. supporting safer handling, easier installation, and reduced installed cost, while low scrap value helps reduce theft risk at accessible sites.

Exceeds the leakage rate and manufacturing requirements of BS 7775 and Class 5 of DIN 19569-4

Installation Steps:

1. Ensure the pipe has a straight, square end.
2. Clean the outside surface of the pipe so it’s smooth and free of dirt, scale, or debris—this helps the coupling seal properly.
3. Measure the coupling width and mark half of that measurement on both the Flap Valve spigot and the connecting pipe.
4. If using a bushing, slide the bushing onto the Flap Valve spigot until the edge of the bushing is flush with the marked line.
5. Slide the Fernco coupling over the bushing until the end faces are flush, then hand-tighten the end clamp. If no bushing is required, slide the coupling onto the spigot until the edge of the coupling is flush with the marked line, then hand-tighten the end clamp.
6. Butt the Flap Valve spigot up to the main pipe. The coupling should now align with the line previously marked on the pipe. Confirm the Flap Valve is oriented correctly (hinge mechanism at the 12 o’clock position), then hand-tighten the remaining end clamp.
7. Tighten all clamp bands to the recommended torque (see coupling label), tightening in sequence across the width of the coupling and starting with the center shear band.

Still searching for the correct drainage solution? View the rest of our pump and plumbing options here.

 
 
 
 
  EXCELLENT  
  
 Based on 110 reviews 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 Posted on Google  
  
 
 Katie A 
 
 
 
  
Last night we realized we were almost out of water. We quickly scrambled to get a delivery out in the morning. Around 11am my husband and were complaining about what a pain it is to not know until he actually checks our water levels with his stick and how close a call it was today.

I did a quick Google search for "Cistern water gauge" and their AI linked me to the PTLevel Wireless Tank Level Monitor on your website. I sent the link to him an he ordered it on the spot. (He said with a name like "Ontario Agra", it sounds like a business we should be doing more business with.)

Within 15 minutes he received an email about it being delivered this afternoon. By "delivered" we assumed they meant shipped out this afternoon... but we were wrong! (Little did we know that your location is a short drive from where we live.)

We ended up getting the item by 3:15pm when a very kind young man pulled into our driveway to hand deliver the Monitor. By 4pm we had it installed (perfect timing with our 100% full cistern) and as of 4:20pm I am writing the review.

On our farm and in our household, we order a lot of items online. We have never experienced this level of excellent customer service before and would not hesitate to order from again or recommend this business!
  
 
  
 
 
 
 Posted on Google  
  
 
 Chris Fletcher 
 
 
 
  
Kyle and the team are fantastic! They have everything you would ever need for plumbing and drainage. One stop shop!
  
 
  
 
 
 
 Posted on Google  
  
 
 Henry Bergen 
 
 
 
  
Great phone reception and easy to work with.
  
 
  
 
 
 
 Posted on Google  
  
 
 William Joyce 
 
 
 
  
Awesome staff who are very helpful!  Walked in with a tile drain problem and walked out with a solution!  I highly recommend these folks.
  
 
  
 
 
 
 Posted on Google  
  
 
 tracy Stiff 
 
 
 
  
Big shout out to George at the front counter!  He saved me 100s of dollars by patiently walking me through a plumbing problem I was having.  With his great tutelage I was able to complete my first plumbing fix.   Thanks George!!!
  
 
  
 
 
 
 Posted on Google  
  
 
 B Searles 
 
 
 
  
This place is amazing for your needs. I have bought drainage supplies from them and last week I needed some materials for a municipal water line. They didn't have it but they kindly directed to me another supplier that did. Without their help I would not have got the job done.
  
 
  
 
 
 
 Posted on Google  
  
 
 Benjamin Heemskerk 
 
 
 
  
Really friendly and knowledgeable staff.
  
 
  
 
 
 
 Posted on Google  
  
 
 Sean Nurse 
 
 
 
  
Love this place and I always enjoy the reception I get from the others and patrons.

This is the store  provides all of the special fittings for my irrigation setups. There's not a problem they can't fix for you in that respect but they are so much more.
  
 
  
 
 
 
 Posted on Google  
  
 
 Lorne Woods 
 
 
 
  
Can't say enough about these guys. Their service is excellent and their driver is the nicest guy you'll ever meet.
  
 
  
 
 
 
   
 
 
 

*Always check with your municipal requirements prior to purchase.