2025 EN Catalog-Interactive - Flipbook - Page 134
AUTOLIMITER® II
AUTOMATIC OVERFILL
PREVENTION VALVE
The Autolimiter® overfill prevention valve is a self contained
two-stage positive shut-off valve designed to prevent the
overfill of an underground storage tank (UST) during a gravity
fed product delivery. When the liquid level of the UST
reaches about 92% of the tank capacity during a fill, the
product in the tank raises the lower float of the valve. The
primary poppet of the valve is then released and reduces flow
to about 10% of normal flow. The sudden reduction in flow
created by the closing of the primary poppet provides "line
shock" to the fill hose notifying the transport delivery driver
the tank is nearing 95% capacity. The transport delivery
driver can then stop filling the tank, disconnect and drain the
delivery hose. The upper float will close off the product flow
when the product level reaches 95% of the tank capacity.
HIGHLIGHTS
ORDERING INFORMATION
• Two-stage, spring-loaded shut-off flapper reduces
Model
Description
70849404
Overfill Prevention Valve only 4" without Drop Tube (valve only)
line shock.
• Vertical float design allows for valve to be removed
even when tank is full.
• Inspection test port.
• Bottom tube threads on (except for -04 models).
Top of Riser
SPECIFICATIONS
Installation
-
The Autolimiter® II is designed solely for
underground storage tanks. For gravity
drops only.
-
This product is for use in tight fill
applications only.
-
EVR Phase 1 models require T-6100-FT
installation tool.
A
Riser Pipe
WARNING
No attempt should be made to utilize this product with
aboveground storage tanks. The valve would not function,
creating a very dangerous condition.
Top of Tank
C
95%
16" (406 mm)
B
Bottom of Tank
6" (152 mm) Standard Spacing or Per Local Code
Note: EVR valves require faring tool.
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