Shutoff fitting for plastic systems puts positive squeeze on gas flow

Journal Article · Thu May 01 04:00:00 EDT 1975 · Pipeline Gas J.; (United States)

OSTI ID:6886539

Du Pont Co. recently introduced its new Aldyl A shutoff fitting for positive sealing of plastic pipe systems. The new fitting is a polyethylene device that can be socket-fused directly to a 2-in. PE distribution line. The fitting costs less than a metal valve, requires no cathodic protection, and eliminates gaskets and seals. Its design takes advantage of PE's proven squeeze-off properties. The pressure-carrying component is an oval cross section within the metal compression channel with a wall thickness equal to that of a regular 2-in. SDR 11 pipe. Teardrop inserts of Du Pont Teflon TFE fluorocarbon resin provide anchoring for the radius clamps used to secure the pipe in the mechanical compression chamber. The fitting, operated by a T-bar wrench with a 2-in. square socket, can shut off a line completely from -20 to 100/sup 0/F at pressures up to 90 psig.

• OSTI ID: 6886539
• Journal Information: Pipeline Gas J.; (United States), Journal Name: Pipeline Gas J.; (United States) Vol. 202; ISSN PLGJA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
CONTROL EQUIPMENT
COST
EQUIPMENT
FLOW REGULATORS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
NATURAL GAS DISTRIBUTION SYSTEMS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PIPE FITTINGS
PIPELINES
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
TEFLON
VALVES