Specifications

Auto Limiter Automatic Shut-Off Valve

The Auto Limiter Ioverfill protection system is an automatic shut-off valve designed to be installed in the

4" riser pipe of underground storage tanks with tight fill adaptor to reduce the flow by 90% at first stage

(approximately 92% of tank capacity) and shut down the gravity flow at 95% of tank capacity. It is designed to be installed in a spill containment manhole, which makes it unnecessary to break concrete or add a new manhole. The anodized cast aluminum valve body and aluminum drop tubes make the Auto Limiter II virtually maintenance free. The Drain Valve Isolation Kit(708-255-01)should be used in a retrofit upgrade to comply with CARB EVR requirement.

Features

Fast deliveries with less restriction

Can be set to 99% of tank capacity

Overfill protection at a field-set level

Two stage flow shut down provides reduced line shock compared to competitive models. First stage reduces flow by 90%, Second stage shuts off remaining 10%

Accommodates all tank sizes

Easy field installation without breaking concrete

Enables manual stick gauging of tank after a complete shut-off

Material:

Valve Body: Aluminum

Floats: Polyethylene

Upper & Lower Tube: Aluminum

First Stage Flapper: Zinc

Second Stage Flapper: Acetal

Guide Rod: Stainless Steel

Size:

Valve Body Length: 18" / 459mm

Upper Drop Tube Std.: 4" dia. x 60" long (102mm x 1.5m)

Lower Drop Tube std.: 4" dia. x 96" long (102mm x 2.4m)

Installer Note:

The Auto Limiter II is designed solely for use in Underground Storage Tanks. For gravity drops only.

No attempt should be made to utilize this product with Above Ground Storage Tanks. The Valve wo’not function, which creates a very dangerous condition. This product is for use in tight fill application only.