The Skimmer is triangular in shape measuring 203mm (8 inches) high and 355mm (14 inches) wide weighing 4kg (8 pounds 15 ounces).
- The Dragonfly™ Stainless Steel Micro Oil Skimmer is a lightweight skimming unit designed to skim oil and other caustic floating materials from the surface of liquids in restricted areas.
- The Skimmer is complete with a self-adjusting floating head. Note that depending on
requirements, the self-adjusting head may come in two different forms. (Polypropylene
Floats or Silicone Sock Head)
- The Skimmer comes fully assembled.
- The Skimmer is constructed from 316 marine grade stainless steel and has a high
resistance to corrosion.
- The stainless steel floats have iron shot within them which serves as a ballast to hold the
Skimmer at the correct depth in the water and to stabilize it.
- The stainless steel floats are sealed with a lead free solder in a position that is above the
- All pipes and fittings are constructed from Polypropylene.
- The materials withstand high water temperatures and a variety of solvents and
hydrocarbon-based materials as well as salt and caustic solutions.
- The skimmer is low maintenance as is has no mechanical moving parts other than the
- The Dragonfly™ 316SS Stainless Steel Silicone Sock Head is not affected by
temperatures up to 140°f (60°c).
- The DragonjlyTM 316SSPPH Stainless Steel Polypropylene is not affected by
temperatures up to 212°f (lOO°c).
- The floats are not affected by changing water levels as it floats at the water surface.
- The capacity ofthe Skimmer is effective to 1,270 gallons (4,000 liters) per hour up to
1,900 gallons (6,000 liters) per hour depending on the pumping systems.
- Several Skimmers may be run in tandem depending on the capacity of the pumping
- Oil Shipping & Terminals
- Barge Companies
- Municipal Water Districts
- Mining Industry
- Environmental Cleanup Companies
- Power Plants
- Government (Armed Forces)
- Food Processing Plants
The Dragonfly™ 316SS Stainless Steel Micro Oil Skimmer is constructed of 316 Marine grade stainless steel and comes with a self-adjusting silicone sock floating head.
The stainless steel floats have iron shot within them which serves as a ballast to hold the Skimmer at the correct depth in the water as well as to stabilize it. The floats are sealed with a lead free solder in a position that is above the water line.
Included with the Skimmer are pipes and fittings made from Polypropylene.
The head on the Dragonfly™ 316SS Stainless Steel Micro Oil Skimmer is made of nylon reinforced silicone with a flotation element at the top which causes the self-adjusting silicone sock head to float to the surface of the water forming a floating circular weir. When water or other floating material is drawn down through the opening the self-adjusting silicone sock head will adjust its position in the water to allow the amount of surface water or other floating material demanded from the pump to pass over it.
This silicone sock floating head is flexible and has a self-adjusting silicone reinforced ring which is able to withstand heat 140°F (60°f) and many chemicals. Replacement heads for this unit are
available as required. These heads are particularly easy to use as they don’t require a great deal of ongoing attention. The Skimmer head adjusts automatically to its required level in the water.
The silicone sock head performs well in oily water exposed to harsh external conditions.
Note: Where the silicone sock head proves to be unsuitable, it can be replaced with the rigid floating polypropylene self-adjusting head. It fits onto the Dragonfly™ Micro Oil Stainless Steel Skimmer with identical fittings as the silicone sock head.
The depth to which the weir (top of the self-adjusting silicone sock ring) goes below the surface of the water is known as the cut. The less the amount being pumped the finer the cut.
When the Skimmer is at rest (pump turned off) ideally the top of the floating weir should be just below either the surface of just barely breaking the surface.
It is best to limit the amount of water crossing over the weir to a point where skimming is most effective. It is also desirable to use a pump that works within the parameters of the Dragonfly™ Micro Oil Stainless Steel Skimmer design.
The preferred pumps to use are positive displacement pump such as helical rotor pumps or double diaphragm pumps. Special mention is made of the double diaphragm pump as single diaphragm pumps tend to bounce the Skimmer on the water’s surface thereby impeding the skimming action by emulsifying the liquid and leading to possible damage to the Skimmer.
If this cannot be accomplished, a water bypass valve or diverter valve should be installed to limit the intake of water or other floating material over the weir at the head ofthe Skimmer.
This can be achieved by fitting a T Section on the tube between the Skimmer and the pump with a diverter valve allowing the water or other floating material to be taken directly from a lower
area of the holding tank. This will reduce the amount of liquid passing over the weir.
To achieve effective skimming results it is advisable to have the surface of the liquid as settled as possible. However, the Dragonfly™ Micro Oil Stainless Steel Skimmer is designed in such a way that even in rough conditions it will obtain the desired result and withstand rough treatment.
To ensure its proper operation, it is important to install the Dragonfly™ Micro Oil Stainless Steel Skimmer so that it floats evenly in the water without the influence of the suction hose pulling it into an uneven position.
To accomplish this we have included the “universal connector”, which consists of a set of tubes and fittings made from polypropylene, and it is designed to fit onto the base of the Skimmer. The connector comes standard with a 1 inch (25mm) male thread to connect to your fittings.
Note: There are a number of 90° bends joined to create the connector. To achieve the flexibility required, it is important that these bends are left lose. When assembling these connections, screw them together until they start to tighten, and then loosen them a bit until they start to move freely. Follow this process with all joints that are normally submerged. Assembling in this manner should result in the Skimmer sitting level in the water regardless of changes in conditions such as water levels or waves.