|
||||
| Latest News Repair Parts Kits Now Available from Viking Pump Read... Electric Heat now available with select Universal Seal series pumps as an alternative to hot oil or steam systems Read... Crown Point Productions announces that Viking Pump will be part of its "World's Greatest!..." series Read... | ||||
|
||||
|
||||
Other Names: Coal-tar pitch, hot pitch, tar pitch, roof pitch. Pitch is a thick, dark-colored bituminous substance obtained either as the result of industrial destructive distillation, or as deposits in the earth. Pitch is usually insoluble in water, miscible with carbon disulfide and benzene; has a "tarry" odor. Pitch can be divided into several groups:
(1) Natural deposits - such as asphalt.
(2) Residues from the distillation of mineral oils.
(3) Residues from the distillation of tars. Typical of this group are coal tar pitch, wood tar pitch, pine tar pitch.
(4) Residues from the distillation of fusible organic substances. Fatty acid pitch is typical of this group.
Viscosity: Ranging from 22 to1,100 cPs., depending on particular type of pitch and temperature at which it is being handled. Typical operating temperature range for handling pitch is 204 to 260°C / 400 to 500°F.
Pump Notes: Cast iron construction is satisfactory. VitonŽ elastomers are usually required because of temperature. Mechanical shaft seals suited for this service may be used.
See also: Coal Tar Pitch
VitonŽ is a registered trademark of DuPont Performance Elastomers L.L.C.