Quick Detail

Factory Supply Overfill Prevention Valve
It's installed in the stand pipe of the underground storage tank. When the fuel reaches less than 20mm to the tank truck head,  the main valve will shut off to prevent fuel leakage. After that, the fuel inside the hose will exhaust from the bypass valve, the flow rate ranges from 2-20L/min, until the level raised within 76mm from the top of the tank.

Specifications

professional manufacturer of antiflow valve  
designed to be installed on 4" pipe  
it can be made into all kinds of colors
 Overfill Prevention 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.
 
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)
 
 
Features
 
1. Faster deliveries with less restriction 
2. Can be set to 99% of tank capacity 
3. Overfill protection at a field-set level
4. 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%
5. Accommodates all tank sizes 
6. Easy field installation without breaking concrete
7. Enables manual stick gauging of tank after a complete shut-off