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Automatic Separation Valve Type:TOO

ECO valve model TOO is a specific gravity sensitive valve,

for automatic draining of a heavier liquid from a lighter liquid.

Commonly used for the draining of water 

accumulated in the bottom of petroleum product storage tanks 
where the stored medium has a lower specific gravity

than that of the accumulated water.

When all accumulated water has drained from the storage tank

the presence of stored product will be sensed by the TOO valve

and it will automatically and promptly shut off.

When fitted with the optional factory limit switch,

a signal can be sent to a remote valve position monitoring system,

signaling that the valve is closed.

ECO-VALVES.COM The ECO valve model TOO is a specific gravity sensitive valve,  for automatic draining of a heavier liquid from a lighter liquid.


Features and benefits of bottom drain valve TOO by eco-valves


Cost Effective

  • Very low maintenance

  • No power supply needed

  • Increases available storage space

  • Saves labor

  • Greatly reduces the plants water treatment volume

  • Prevents product loss

High Performance

  • Immediate closing response when product detected

  • All internal parts are made of stainless steel

  • High accuracy / repeatability

  • High drain flow efficiency

  • Built in Anti Vortex Device, for efficient controlled flow

  • More reliable and efficient compared to manual or other methods


  • Prevents human manual errors

  • Protects environment

  • Reduces staff exposure to harmful product fumes

  • Eliminates product spillage during dewatering

  • Integral strainer for reliable sealing


  • Introduced to the industry years ago, the TOO is a time proven product

  • Used in over 20 countries worldwide and backed by the Global Service Network of ECO-VALVES.

  • With a straightforward and compact construction, the TOO valve is designed for minimal maintenance, and to last the lifetime of the tank.

  • Environmentally cleaner & safer.

  • More reliable and efficient compared to manual or other methods.

  • Each valve is assembled and tested at the ECO ISO 9001 certified manufacturing plant.


  • Limit Switch: Atex or Nema Div. 1/Zone 1 hazardous areas approved

  • Manual Pump: for above tank bottom installations

  • Outlet Valve Handle Extension: for pit installations (optional)


  • Gasoline 

  • Gas Oil

  • Jet Fuel

  • Kerosene

  • Diesel Oil

  • Other petroleum products



780 mm x 580 mm x  510 mm x 435 mm

30.1 in x 22.8 in x 20 in x 19 in

Basic Installation instructions:

  • In a vertical position
    (to be performed using a level measuring device
    to ensure accuracy)

  • At the lowest available point of the tank

  • Firmly positioned and held securely

  • As close to the storage tank as possible

Ensure that the size of the manual drain valve between the storage tank
and the Separation Valve is at least as large as the inlet flange of the Separation Valve.

If a pipe is to be connected to the outlet of the Separation Valve,

make sure it is as short, straight and horizontal  as possible.

This will allow undisturbed drainage

and will prevent the development of undesirable suction.

In cases where a downward slope is unavoidable,

allow for an air gap (vacuum  breaker) in the drainage pipeline.

Make sure that the TOO valve and ancillary parts are thoroughly secured.

eco-valves TOO separation valve measurements  -
ECO-VALVES roof drain valve type TOR
Related products


 Roof Drain Valve  

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