header bg

AFL

  • Choose your valve size
  • Choose your valve type
  • Manuals
  • Technical Bulletins

Step 1: Calculate Rainfall

1.Use rainfall intensity chart to find rainfall amount in inches per hour (in./hr.) for the site, then calculate to determine feet per hour (ft./hr.)
Rainfall ___________ in./hr. divided by 12 in. = ___________ ft./hr.
2.Measure stormwater drainage area to be protected by oil stop valve , then determine square footage as follows:
Length ___________ ft. x Width ___________ ft. = ___________ sq. ft.
3.Multiply the rainfall (ft./hr.) in step 1. by the area (sq.ft.) in step 2 determine the oil stop valve flow rate in cubic feet per hour (cu.ft./hr.):
___________ ft./hr x ___________ sq.ft. = ___________ cu.ft./hr.
4.Multiply flow rate (cu.ft./hr.) from step 3 by 0.1247 to convert flow rate to U.S. gallon per minute (gpm):
___________ cu.ft./hr. x 0.1247 = ___________ gpm.

Step 2: Choose Valve Size

VALVE SIZE(MAX) FLOW RATE
4" DIAMETER160 GPM
4" DIAMETER160 GPM
6" DIAMETER360 GPM
8" DIAMETER600 GPM
10" DIAMETER900 GPM
12" DIAMETER1400 GPM

WARNING: EXCEEDING THESE FLOW RATES MAY CAUSE PREMATURE CLOSING.

Can't find what you're looking for?

If you're having trouble locating something specific on our website, please

PVC

PVC models are the most economical way to prevent bulk hydrocarbon spills.
Corrosion resistant PVC construction is an ideal choice for warm climates.

Stainless Steel Not Extended

Used in lieu of PVC units in colder climates, which may eliminate the necessity
for an electric freeze protection package.

Stainless Steel Extended

The best option if fire is possible. By extending the pipe thru the sump wall, there
is no connection inside the sump to burn and fail.

    OSV-4Downloadpdf

    OSV-4SVDownloadpdf

    OSV-4SSDownloadpdf

    OSV-4SSSVDownloadpdf

    OSV-4SSTDownloadpdf

    OSV-4SSTSVDownloadpdf

    OSV-6Downloadpdf

    OSV-6SVDownloadpdf

    OSV-6SSDownloadpdf

    OSV-6SSSVDownloadpdf

    OSV-6SSTDownloadpdf

    OSV-6SSTSVDownloadpdf

    OSV-8Downloadpdf

    OSV-8SSDownloadpdf

    OSV-8SSSVDownloadpdf

    OSV-8SSTDownloadpdf

    OSV-8SSTSVDownloadpdf

    OSV-10SSDownloadpdf

    OSV-10SSSVDownloadpdf

    OSV-10SSTDownloadpdf

    OSV-12SSDownloadpdf

    OSV-12SSSVDownloadpdf

    OSV-12SSTDownloadpdf

Show Buttons
Share On Facebook
Share On Twitter
Share On Google Plus
Share On Linkedin
Contact us
Hide Buttons
MENU