Segmented Coupling

For when large diameter (over 217”) couplings are needed, segmented couplings are designed and manufactured. Baker Segmented Couplings allow for ease of disassembly as well as having interchangeable parts in maintenance and part substitution. These large couplings are made possible by fabricating the middle ring in segments. The segments are match marked for field welding in order to produce a complete coupling.The segmented follower rings can be furnished from ASTM A36, but other materials can be used per specification. Hardware can be supplied with ASTM A563, or per spec. Bolts are equally spaced along the circumference to provide uniform and adjust gasket pressure in response to future settlement and rebound. For extra flexibility each segment lug contains only one bolt and is one piece that transfers the bolt pressure directly to the gasket. Baker Segmented Couplings provide pipe movement of 1-½” expansion-contraction, and are subject to great settlement and rebound. Note to Design Engineer: Axial bolts to squeeze the circumferential gasket is not recommended.

291.26” O.D. Segmented Coupling- 2008,
Project: Revelstoke, British Columbia, Canada,
Customer: Robar/ Voith Siemens HPG,
Segmented Coupling of 291.27” O.D. Test/ Surge Pressure 348
PSI.
299.25” O.D. Segmented Coupling- 1991,
Project: Fort Peck Dam,
Customer: Chicago Bridge & Iron Co.,
Owner: U.S. Army Corps of Engineers,
Segmented Coupling of 299.25” through 170.00” O.D.
314.50” O.D. Segmented Coupling- 1982,
Project: Russell Dam Power Plant,
Customer: Voest-Alpine Intern. Corp.,
Segmented Coupling of 314.50” O.D.
337.4” O.D. Segmented Coupling- 1974,
Project: Nipawin Hydroelectric Power Station Project, Canada,
Customer: A.M.I Steego Ltd.,Penstock
Segmented Couplings of 337.4” through 336.4” O.D.
291” O.D. Segmented Coupling (Qty. 45)- 1954,
Project: Garrison Dam, North Dakota,,
Owners: U.S. Army Corps of Engineers,
Penstocks 291” O.D. Tested simultaneously to 150 PSI and ½
deg. of articulation, and pipe movements of 1-½ expansion-contraction.
Penstocks built on Fort Union shale, subject to great settlement and rebound.
290.5” O.D. Segmented Coupling- 1960,
Project: Eufaula Dam Penstocks, on Canadian River near
Porum, Oklahoma,
Owners: U.S. Army Corps of Engineers,
Penstocks are 290.5” O.D., with 65 psi design pressure. Part
of the vast development of the Arkansas River Watershed
290.5” O.D. SegmentedCoupling- 2011,
Project: Eufaula Dam Penstocks, on Canadian River near
Porum, Oklahoma,
Customer: Mobley Contractors Inc.,
Refurbishment after over 50 years of service of Penstocks
are 290.5” O.D., with 65 psi design pressure.
248.13” O.D. Segmented Coupling (Qty. 4)- 1964,
Project: Manicouagan 2, near Baie Comeau, Quebec,
Owners: Hydro-Quebec,Segmented Couplings
of 248.13” O.D. 152 PSI design pressure. Middle rings of Stelco 44, Gr. B.
301.50” O.D. Segmented Coupling- 1975,
Project: Chief Joseph Dam, Bridgeport, WA,
Customer: Chicago Bridge & Iron Co.,
Segmented Coupling of 301.50” O.D.
283.20” O.D. Segmented Coupling- 1970,
Project: Tehachapi Surge Tank,
Penstocks of 23.6 foot O.D., for 60 PSI working pressure.
Provide articulation of pipeline adjacent the huge surge tank, one of the largest structures on the California Water Project. Other couplings for 169.50” O.D. (210 PSI) and 61” O.D.
169.50” O.D. Segmented Coupling- 2014,
Project: Tehachapi Surge Tank,
Owner: Portland General Electric,
Refurbishment of Segmented Coupling of 169.50” O.D. after over 30 years of service
177.13” O.D. Segmented Coupling- 1974,
Project: Chief Joseph Dam, Bridgeport, WA,
Customer: American Bridge Division,
Segmented Coupling of 177.13” O.D.
326.43” O.D. Segmented Coupling- 1964,
Project: Keystone Dam near Sand Spring, OK,
Owner: U.S. Army Corp of Engineers,
Segmented Coupling of 326.43” O.D. The largest coupled penstock in the world.
326.43” O.D. Segmented Coupling- 2002,
Project: Keystone Dam,
Owner: U.S. Army Corp of Engineers,
Segmented Coupling of 326.43” O.D., refurbished after over 35 years of service.