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2 in. Generator Day Tank Overfill Prevention Valve
TOPS T-200
2 in. Generator Day Tank Overfill Prevention Valve
w/ 2 in. Cam Adaptor
The Overfill Prevention Valve is the solution to the following problems: - Restricted height GenSet tanks with storage capacity
- Installing an Overfill Prevention Valve into a 2 in. opening
- Preventing expensive overfilling of AST's
- Unreliable whistle/vent alarms
The Overfill Prevention Valve has the following outstanding design features: - Installs in a 2 in. NPT
- Accepts pressure delivery of product
- Provides GenSet tanks with large fuel storage capacity at shutoff height
- Provides positive shut off of fuel
- Retrofits to an existing AST
- Mechanical in operation, no usr interface required
- Compatible with fuels (Consult factory for your specific product)
- Minimum 5 PSI operating pressure required
Typical Shut Off Heights and Capacities of Aboveground Storage Tanks
Configuration: 2 in. Opening; direct installation into weld flange; single wall top of tank
| AST Style |
AST Height |
Shut Off Height |
% Capacity |
| Rectangle |
32 in. |
29 in. |
90% |
| Rectangle |
34 in. |
31 in. |
91% |
| Rectangle |
36 in. |
33 in. |
92% |
| Rectangle |
42 in. |
39 in. |
93% |
| Rectangle |
48 in. |
45 in. |
94% |
| Rectangle |
54 in. |
51 in. |
95% |
| Rectangle |
60 in. |
57 in. |
95% |
Configuration: 2 in. Opening; direct installation into weld flange; single wall top of tank
| AST Style |
AST Height |
Shut Off Height |
% Capacity |
| Round |
32 in. |
29 in. |
95% |
| Round |
34 in. |
31 in. |
95% |
| Round |
36 in. |
33 in. |
95% |
| Round |
42 in. |
39 in. |
95% |
| Round |
48 in. |
45 in. |
97% |
Configuration: 2 in. Opening; direct installation into weld flange; single wall top of tank
| AST Style |
AST Height |
Shut Off Height |
% Capacity |
| Obround |
27 in. x 44 in. |
41 in. |
95% |
Important Information for the Filling Operation - Always use a liquid tight connection for filling an AST
- Product surge/wave action may occur during filling of an AST
- Always consult the factory for installation configurations
The #T-200 is designed for use with gasoline, diesel, #2 heating oil and other lightweight liquids. Always consult the factory for approval to use these overfill prevention valves in any other type of product.
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1-877-230-2736
TOPS Overfill Valve
