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Manufacturer Resources
Product Specs
- Volume:
- 1.172
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Drainage Products
- Product Type:
- Drain
- Product Weight:
- 5.4
OATEY 78033 – Frequently Asked Questions
1) Does the Oatey 78033 roof drain take 3 inch or 4 inch pipe?
Both. The Oatey 78033 is built to accept either a 3 inch or a 4 inch outlet connection, so one drain covers two common roof leader sizes. The body is PVC, so it solvent welds to PVC drain piping of the size you run.
2) Does the Oatey 78033 come with a dome strainer, or do I order that separately?
The dome comes with it. The 78033 ships as a complete drain: PVC body, ABS dome strainer, and a dam collar. Nothing extra to buy for the strainer or the collar, you just need the solvent cement and the PVC leader pipe.
3) What is the dam collar on an Oatey roof drain for?
The dam collar rings the drain and holds a set depth of water on the roof, which is how a secondary or overflow drain is meant to behave. On a primary drain you leave it off; on the overflow you fit it so the drain only takes water once the primary has backed up. The 78033 is supplied with the collar, so it can be set up either way on the job.
4) Can I use a PVC roof drain like the Oatey 78033 instead of a cast iron drain?
On a residential or light commercial roof draining into plastic leader pipe, yes, and the PVC body joins directly to PVC piping with solvent cement rather than needing a caulked or no-hub connection. Cast iron is what you go to where the spec calls for a metal body, heavy foot traffic over the drain, or a hot-applied roofing system that would be tough on plastic. The 78033 has a PVC body with an ABS dome.
5) Is the Oatey 78033 roof drain light enough for one person to set on the roof?
Yes. It weighs 5.4 pounds, which is typical of a plastic-body drain and a fraction of what a cast iron roof drain of the same outlet size runs. One installer can carry and set it, and it puts far less load on the deck.
6) What is the Oatey part number for the PVC roof drain with the ABS dome?
Oatey 78033. That single part number covers the PVC roof drain with the ABS dome strainer and the dam collar, sized for a 3 inch or 4 inch outlet.
How fast can I get the OATEY 78033 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 78033 come with a warranty?
Absolutely. The OATEY 78033 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 78033?
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 78033 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.