Product Information
Description
Waterway 640-4740V Universal Flat Grate, 12 x 12 inch Square, White
VGB anti-entrapment, drop-in replacement.
The Waterway 640-4740V Universal Flat Grate (SKU PST-WW6404740V, MPN 640-4740V) is a 12 x 12 inch square white anti-entrapment cover that drops straight into existing Waterway, Hayward, and Pentair 12 x 12 frames. It meets the Virginia Graeme Baker Pool and Spa Safety Act and ASME/ANSI A112.19.8 standards, so you can replace a cracked or expired grate without re-cutting the sump. Pair it with a Waterway frame or use it as a one-for-one swap on your existing floor or wall installation.
Why PST Customers Pick This
VGB Anti-Entrapment Rated
Certified to ASME/ANSI A112.19.8 and the Virginia Graeme Baker Pool and Spa Safety Act for single or multiple drain installs on commercial and residential pools.
Universal 12 x 12 Fit
Drops into existing Waterway, Hayward, and Pentair 12 x 12 frames so you can replace an expired or cracked cover without changing the sump or plumbing.
High Flow, Low Velocity
62.4 square inches of open area delivers 292 GPM on floor installations at 1.5 feet per second, well within safe suction limits for residential and commercial pools.
Floor or Wall Mount
Approved for floor and wall orientations, giving you flexibility for new builds, renovations, and direct cover-only replacements.
Stainless Hardware
Mounting screws are stainless steel so the cover stays anchored against pool chemistry and years of submersion.
Trusted Waterway Build
Made by Waterway Plastics, the OEM supplier behind a large share of US pool drains, so fit and tolerances match factory expectations.
Safety Notice
Pool drain covers are life safety devices. Any cracked, missing, or expired grate must be replaced before the pool is reopened. Installation should follow ASME/ANSI A112.19.8 and the Virginia Graeme Baker Act, and dual-drain configurations must remain hydraulically balanced per the pump and sump manufacturer's instructions.
Specifications
Frequently Asked Questions
Is the Waterway 640-4740V VGB compliant?
Yes. The 640-4740V meets ASME/ANSI A112.19.8 and the federal Virginia Graeme Baker Pool and Spa Safety Act, the standard required for residential and commercial pool drain covers in the United States.
What frames does the 640-4740V fit?
It drops into existing Waterway, Hayward, and Pentair 12 x 12 in square frames, so a cover-only swap is straightforward when the original frame is sound. If your frame is cracked or pitted, replace it at the same time with a matching Waterway 12 x 12 frame.
What is the difference between the 640-4740V and the 640-4720V or 640-4729-DKGV?
The 640-4740V is the grate only in white. The 640-4720V is the full white frame-and-grate assembly, and the 640-4729-DKGV is the dark gray frame-and-grate assembly. Buy the cover-only 640-4740V when you are replacing an expired grate over an existing, undamaged frame.
How much flow can a single 640-4740V handle?
On a floor installation, the cover is rated for 292 GPM at 1.5 ft/s with 62.4 sq in of open area. Always size the cover to your pump's actual flow and verify the rating against your sump manufacturer's published charts before commissioning.
Can I install this drain grate myself?
Cover-only swaps over an existing, undamaged frame are typically a homeowner task: drain to below the cover, remove the stainless screws, drop the new grate in, and reinstall the hardware. New construction, sump changes, or any dual-drain rework should be handled by a licensed pool professional to verify VGB hydraulic balance and pump sizing.
Order the 640-4740V From PST
Authorized Waterway dealer with same-business-day shipping on in-stock drain covers. PST Pool Supplies stocks matching 12 x 12 frames and dark gray, black, and white grate variants if you need to update both pieces.
Additional Info
| Category | Pool Drain Covers |
| SKU | PST-WW6404740V |
| MPN | 640-4740V |
| Manufacturer | Waterway Plastics |
| Weight | 1.75 lb |
Let customers speak for us
Easy to order - received the next day!
Beautiful!!
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Great product does exactly what was advertised to do.
I ordered the wrong part. Customer service was very helpful. I returned it and within the week my credit card was credited back. Excellent customer service policy.
There was a delay in shipping due to postal service. They sent another part right away.
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Exactly as advertised and super fast shipping and delivery
