UNISPHERE™ Pigs are seamless, liquid-cast polyurethane spheres. They are designed for heavy-duty service in the removal of liquid hydrocarbons and water from pipelines and piping systems.
UNISPHERE™ Pigs are undersized and can be sized to match most any pipe ID. The inflating valve(s) on the UNISPHERE™ Pig may be used for inflating or deflating purposes.
UNISPHERE™ Pigs are to be filled completely with liquid (usually a 50/50 mix of water/glycol and light weight oil). The spheres are easily inflated with a TDW inflation pump.
TDW heavy-duty UNISPHERE™ Pigs can be used in natural gas (wet or dry), crude oil (sweet or sour), and refined hydrocarbon products. Consult the factory for applications in special chemicals. Recommended operating temperature is -20°F to 200°F. Care should be taken when handling or transporting at temperatures below freezing.