"The pneumatic method
employs a pneumatic piercing tool as the bursting device," he explained.
Under production conditions it to execute difficult, therefore 769-080-07538145-98 average diameter of fibres which have diameter no more than 2 microns an indirect pneumatic method
under the scheme resulted on fig.
While pneumatic bursting works well with a wide variety of fracturable host pipe materials and diameters, ductile iron and steel pipes have been a limitation of the pneumatic method
. Advances in pneumatic bursting technology have improved its success rate with certain clamps and joints, but ductile iron sleeves and steel repair clamps can still be a limitation.
The pneumatic method
is most desirable since it allows remote positioning of the polymer metering unit and more precise adjustment of polymer placement position.
Mechanical and pneumatic methods
of handling and containing both fillers have improved and increased in cost with time.
Some remediation firms have developed hydraulic or pneumatic methods
of creating fractures in dense soils and making existing fractures larger to get at contaminants.