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 108 reviews 
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
 
 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.
  
 
  
 
 
 
 Posted on Google  
  
 
 Adrian Van Eck 
 
 
 
  
Picked up some 3" big O pipe with fittings and explored the store. Amazing selection of great quality agricultural and landscape products. Both this and my previous experience with Kyle and other staff has been outstanding. It was almost an 80 minute drive for me but knowing I can get things there that I probably cannot find to many other places and the food staff I will come back as the need arises and will refer others when I can.
  
 
  
 
 
 
 Posted on Google  
  
 
 William Jones 
 
 
 
  
This is a well run business with polite, professional staff willing and able to answer any questions regarding piping, fittings landscape material... the list is long.  The inventory of various fittings, culvert and piping is extensive... nothing in the area like this business. Kyle is a keen manager who ensures everyone is treated well and gets what they need... he knows his product lines well.  George knows his pipe fittings and is able to draw from an extensive knowledgeable background to satisfy any configuration.
  
 
  
 
 
 
   
 
 
 

*Always check with your municipal requirements prior to purchase.