 |
|
|
AutoLimiter® ll Automatic Shut-Off ValvesThe 708 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 approximately 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 will then stop filling the tank, disconnect and drain the delivery hose. The upper float will close off the product flow completely providing positive shut-off when the product level reaches 95% of the tank capacity. Models of the 708 Autolimiter® exist to comply with almost any underground storage tank application including standard dual point vapor recovery, dual point CARB EVR vapor recovery, dual point biofuel (E85 & biodiesel) applications and single point coaxial fill and vapor return applications. INSTALLER NOTE: The AutoLimiter® II is designed solely for use in underground storage tanks. For gravity drops only. No attempt should be made to utilize this product with aboveground storage tanks. The valve would not function, creating a very dangerous condition. This product is for use in tight fill applications only. |
Highlights/Advantages
- Two-stage spring loaded shut-off flapper reduces line shock.
- Vertical float design allows for valve to be removed even when tank is full.
- Inspection test port.
- Bottom tube threads on.
Materials
- Valve Body: Aluminum
- Floats: Polyethylene
- Upper & Lower Tube: Aluminum
- First-Stage Flapper: Zinc
- Second-Stage Flapper: Acetal
- Guide Rod: Stainless steel
Certification/Listings
-
* ULC MH21090
**Biofuel Approved (E85 and biodiesel)
*** EVR Phase 1 Certification, -11 and -12 models VR-101
Ordering Information
| PART | APPLICATION |
TOP TUBE RIVET ON INSTALLATION METHOD |
BOTTOM TUBE INSTALLATION METHOD |
LENGTH A IN./CM. |
LENGTH B IN./CM. |
LENGTH C IN./CM. |
LENGTH D IN./CM. |
|---|---|---|---|---|---|---|---|
| 708-491-01* | Dual point | Outside of valve body | Thread on | 60/152.4 | 16/40.64 | 96/243.84 | 172/436.88 |
| 708-491-02* | Dual point | Outside of valve body | Thread on | 60/152.4 | 16/40.64 | 120/304.8 | 196/497.84 |
| 708-491-11*** | Dual Point | Factory installed | Thread on | 76/193 | Attached to top tube | 96/243.84 | 172/436.9 |
| 708-491-12*** | Dual Point | Factory installed | Thread on | 76/193 | Attached to top tube | 120/304.8 | 196/497.8 |
| 708-491-21** | Dual Point | Outside of valve body | Thread on | 60/152 | 16/40.64 | 96/243.89 | 172/436.88 |
| 708-492-01* | Dual point | Outside of valve body | Thread on | 120/304.8 | 16/40.64 | 96/243.84 | 232/589.28 |
| 708-492-02* | Dual point | Outside of valve body | Thread on | 120/304.8 | 16/40.64 | 120/304.8 | 256/650.24 |
| 708-492-11*** | Dual point | Factory installed | Thread on | 120/304.8 | Attached to top tube | 96/243.84 | 216/548.6 |
| 708-492-12*** | Dual point | Factory installed | Thread on | 120/304.8 | Attached to top tube | 120/304.8 | 240/609.6 |
| 708-493-01 | Coaxial | Inside of valve body | Thread on | 60/152.4 | 16/40.64 | 96/243.84 | 172/436.88 |
| 708-493-02 | Coaxial | Inside of valve body | Thread on | 60/152.4 | 16/40.64 | 120/304.8 | 196/497.84 |
| 708-494-04 | Dual point Valve/Adaptor Kit | Outside of valve body | Rivet on | N/A | 16/40.64 | N/A | N/A |
 |