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Manufacturer Resources
Product Specs
- Base Material:
- PVC
- Base Size Diameter:
- 2in
- Connection Type:
- PVC
- Volume:
- 1.172
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Drainage Products
- Product Type:
- Drain
- Product Finish:
- Cast Iron Grate
- Product Material:
- PVC
- Product Weight:
- 10.55
OATEY 78022 – Frequently Asked Questions
1) What size pipe does the Oatey 78022 roof drain connect to?
The 78022 roof drain has a 2 inch PVC outlet, so it solvent-welds directly to 2 inch PVC drain pipe. The connection is PVC to PVC, meaning no gasket, no caulked joint, and no transition fitting when your leader is already PVC. If the building's storm leader is cast iron or ABS, you'll need the appropriate transition coupling to get to 2 inch PVC first.
2) Is the dome on the Oatey 78022 metal or plastic?
Metal. The body is PVC but the dome strainer is cast iron, which is the reason to pick this one over an all-plastic roof drain. Cast iron holds up to foot traffic from roofers and HVAC techs walking the roof, and it doesn't get brittle from UV exposure the way an unprotected plastic dome can.
3) Can I use the Oatey 78022 as an overflow or scupper drain?
It works for secondary drainage where a 2 inch outlet satisfies the code requirement, and it's a common choice for that role. Keep in mind an overflow outlet normally has to be set at a higher elevation than the primary drain and has to discharge separately, so the drain itself is only part of meeting that requirement. The 2 inch PVC outlet ties into a 2 inch PVC overflow leader with a solvent weld.
4) How much does the Oatey 78022 roof drain weigh?
About 10.55 lbs assembled, and nearly all of that is the cast iron dome rather than the PVC body. That matters for two reasons: it's a one-hand carry up a ladder, and the mass of the dome means it stays put in wind rather than needing to be strapped down.
5) Will the PVC body on this Oatey roof drain hold up on a hot roof?
The 78022 is a PVC-bodied drain, which is standard practice for roof drains on wood or lightweight decks and keeps the install cheap and glued rather than caulked. The exposed part taking the sun and the foot traffic is the cast iron dome, not the plastic. Where a job spec calls out an all cast iron drain body, this isn't the part to submit.
6) What is the Oatey part number for the 2 inch PVC roof drain with the cast iron dome?
Order it as Oatey 78022. That's the manufacturer part number for the 2 inch PVC-outlet roof drain fitted with the cast iron dome strainer, and it's the number to put on a purchase order or a submittal so you don't get shipped the plastic-dome version.
How fast can I get the OATEY 78022 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the OATEY 78022 come with a warranty?
Absolutely. The OATEY 78022 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the OATEY 78022?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the OATEY 78022 from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.