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Manufacturer Resources
Product Specs
- Base Material:
- PVC
- Base Size Diameter:
- 4in
- 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 78044 – Frequently Asked Questions
1) What size pipe does the Oatey 78044 roof drain connect to?
The Oatey 78044 has a 4 inch PVC outlet, so it takes 4 inch PVC drain pipe solvent welded into the base. The base itself is PVC, so it mates with PVC DWV pipe, not cast iron or ABS.
2) Is the dome on the Oatey 78044 plastic or metal?
Metal. The 78044 ships with a cast iron dome strainer over a PVC body, which is the combination roofers usually want where the drain can take foot traffic or debris impact. The body and outlet stay PVC for solvent weld connection.
3) Does the Oatey 78044 roof drain come with a dam collar, or do I order that separately?
The dam collar is included with the 78044, along with the cast iron dome. The collar is what holds water back for controlled flow on a ballasted or overflow-managed roof, so you do not need to source it as a separate part.
4) Can I use a PVC roof drain instead of a cast iron one on a flat roof?
A PVC bodied drain like the Oatey 78044 is the normal choice when the roof leader is PVC DWV, since the 4 inch outlet solvent welds straight in with no transition coupling or lead work. Full cast iron drains are specified where the leader is cast iron or where the spec calls for metal throughout. The 78044 splits the difference: PVC body for the connection, cast iron dome where the abuse happens.
5) How heavy is a 4 inch Oatey PVC roof drain for getting it up on the roof?
About 10.55 pounds assembled, most of it in the cast iron dome. That is a one-man carry up a ladder, unlike a full cast iron drain body of the same size.
6) What is the Oatey part number for the 4 inch PVC roof drain with cast iron dome?
Oatey 78044. That single model number covers the 4 inch PVC drain complete with the cast iron dome strainer and dam collar, which is what you quote when a distributor asks for the exact MPN.
How fast can I get the OATEY 78044 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 78044 come with a warranty?
Absolutely. The OATEY 78044 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 78044?
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 78044 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.