check valve adaptors

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Specifications

The Auto Limiter Ioverfill protection system is an automatic shut-off valve designed to be installed in the 4" riser pipe. 

Specifications
AILE'S ZHF-V vapor check valve adaptors are used on the vapor recovery riser pipes on an underground storage tank. 


ZHF-V series of Vapor Check Valve Adaptor

 

1)        AILE'S ZHF-V vapor check valve adaptors are used on the vapor recovery riser pipes on an underground storage tank.

2)        Dual point vapor recovery systems provide an easy and economical installation at new locations and faster drop times than coaxial systems due to a straight 4" drop across the top and vapors collected from 3" or 4" riser pipe.

3)        The vapor check valve adaptor permits coupling to the vapor return line from the underground tank in dual point systems. The poppet design seals off the vapor path when not coupled.

 

4)        Features :

a.  Constructed of anodized aluminum  body

b.  Eliminates digging**-Slips into existing drop tubes

c.  Fits all 4" vapor recovery elbows




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 *0% at first stage



(approximately *2% of tank capacity) and shut down the gravity flow at *5% 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(*********1)should be used in a retrofit upgrade to comply with CARB EVR requirement.



 



Features



Fast deliveries with less restriction



Can be set to *9% 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 *0%, Second stage shuts off remaining *0%



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: *8" / **9mm



Upper Drop Tube Std.: 4" dia. x *0" long (**2mm x 1.5m)



Lower Drop Tube std.: 4" dia. x *6" long (**2mm x 2.4m)