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Poly-Mart Tank Outlet - Tank Overflow Kit - 4"

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Poly-Mart Tank Outlet - Tank Overflow Kit - 4\"Poly-Mart Tank Outlet - Tank Overflow Kit - 4\"
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3 days

$8.00 (32% Off)



This is the Poly-Mart Tank Outlet - Tank Overflow Kit - 4". This Flanged Overflow Kit is the Overflow Fitting installed on all Poly-Mart Rain Harvesting Tanks. There is a standard rule of thumb when plumbing your rain harvesting system. Rainwater has to be able to exit your tank (when it's at maximum capacity) just as fast as it can enter the tank. If you do not have an adequate sized overflow, your system could back-up and fail during a large rain storm. This Tank Overflow Kit comes with the Overflow Fitting, Hardware, Rubber Gasket and an Overflow Screen!

Poly-Mart Overflow Outlets are offered in 3" & 4" sizes. Mozzie Stoppa High Flow Flap Valves fit directly into these outlets to make your Rainwater Tank insect-proof. These Tank Overflow Outlets are ideal for a flat surface like the dome flats on all Poly-Mart Tanks.

The 4? Flanged Tank Overflow Outlet uses a "ripple geometry" comb that allows the speed of the overflowing rainwater to be maximized. The combed circumference "breaks" the water surface and generates a higher outflow which is ideal for high rainfall events.

Ships FREE with purchase of any Poly-Mart tank!!

Features and Benefits
  • Lead free PVC
  • Low maintenance
  • Flanged outlet has pre-molded holes for fixing
  • Quick and easy installation
  • Overflow Outlets can be fitted with Mozzie Stoppa Hi-Flow Flap Valves to insect proof the tank.
  • To Install Tank Outlets, cut a hole into the wall of the tank using a hole saw. Insert the elbow end of the fitting into the hole and simply screw onto the tank wall with the provided hardware.
  • *Poly-Mart 4" Tank Overflow Kit's requier a 4 1/2" hole saw for proper installation.

Poly-Mart Shipping Details:

On arrival, inspect the shipment immediately for obvious signs of damage. If any item is damaged to the point that you do not want the product, do NOT sign for the shipment and do NOT take possession of the product. The freight carrier will then be responsible for returning the product back to the factory, and we will arrange a rush replacement product to be sent back out. When you sign for a shipment you are signing that it is in good condition and you accept the shipment. This will relieve the freight carrier of any claims!

Should you determine that any items are missing, you MUST note the missing items on the delivery ticket and contact Customer Service to report any issues. You should open cartons and containers. If there is the slightest doubt that the merchandise is damaged (concealed or not) refuse the shipment and do not sign for delivery.

Missing or Defective Parts

We will gladly supply the missing parts at no charge to the customer within 10 days of purchase. After 10 days the customer will be responsible for the cost of the missing part and any related shipping cost. Please inspect all packages received with your order. Even if you do not plan to install the unit right away take a few minutes to confirm your order and ensure all parts are included and in good condition. Contact us within the 10 day period and report any missing parts. This will allow us to quickly correct your order prior to installation.

Product Returns

Product returns are not allowed for Poly-Mart products. Please be sure to carefully review all specifics regarding your product prior to submitting your order!


Because your custom order is built to your exact specifications, and a down payment is required to start the build process, ALL orders cannot be cancelled. The only exception being if the item has yet to enter production. Please carefully review all specifics regarding your product prior to submitting.

Poly-Mart Warranty Details:

Poly-Mart carries a 1-year warranty on all accessories and specifically excludes the cost of labor for installation and/or removal of personal property. We are also not liable for personal/property damages. Poly-Mart is not liable for accessory failure if damaged by the customer.

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