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Product Specs
- Volume:
- 1.172
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Drainage Products
- Product Type:
- Drain
- Product Weight:
- 5.4
OATEY 78034 – Frequently Asked Questions
1) Does the Oatey 78034 roof drain take 4 inch PVC pipe?
Yes. The 78034 is a 4 inch PVC roof drain, so it mates to 4 inch PVC drainage pipe. The body is PVC, which means a solvent weld connection rather than a caulked or threaded joint, so plan on PVC cement and a compatible 4 inch riser or leader line.
2) Does the Oatey 78034 come with the dome strainer, or is that ordered separately?
The dome comes with it. The 78034 ships as a PVC drain body with an ABS dome strainer and a dam collar, so you get the debris dome and the collar in the one part number. Only the connecting pipe and solvent cement are separate.
3) What is the dam collar on this roof drain for?
The dam collar sits around the drain and holds a shallow pool of water on the roof, which is how a controlled flow or secondary ponding detail is built on a flat roof. On the Oatey 78034 the collar is supplied with the drain, so if your drawing calls for a dammed primary or an overflow condition you do not need to source it separately. If the spec calls for free drainage with no ponding, leave the collar off.
4) Is this Oatey roof drain suitable for a flat commercial roof with a membrane?
Yes, that is the application for a domed PVC roof drain with a dam collar. The dome keeps leaves and gravel out of the 4 inch leader, and the drain is intended for low slope and flat roofs where water collects at the drain point rather than running off an edge. For a sloped shingle roof you want a gutter and downspout detail instead, not a roof drain.
5) Can I mix a PVC drain body with an ABS dome like the Oatey 78034 uses?
Yes, and that is how the 78034 is built: PVC body, ABS dome. The dome is a mechanical fit over the drain body, not a solvent welded joint, so the dissimilar plastics are not a problem. Solvent cement is only used at the 4 inch pipe connection on the PVC body, and that joint should be PVC to PVC.
6) What part number do I order for the Oatey 4 inch PVC roof drain with dome?
Order Oatey 78034. That single model number covers the 4 inch PVC roof drain complete with the ABS dome strainer and dam collar, so there is no separate dome or collar number to add to the purchase order.
7) How much does the Oatey 78034 roof drain weigh for shipping and rooftop handling?
5.4 pounds. That is light enough for one person to carry up a ladder with the dome and collar attached, which is part of why plastic bodied drains get used on re-roofs in place of cast iron.
How fast can I get the OATEY 78034 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 78034 come with a warranty?
Absolutely. The OATEY 78034 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 78034?
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 78034 from ZenSupply?
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and
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every order.
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