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The C-4 Rigid Coupling is our standard coupling and is designed for rigid piping applications. The C-4 is specially designed to provide a rigid, locked-in pipe connection to meet the specific demands of rigid design steel pipe.
Unit of Measure
Items
C-4

C-4 1 1/4 GRN FLUSH E RIGID CPLG

C-4

C-4 1 1/4 GALV FLUSH E RIGID CPLG

C-4

C-4 1 1/4 E TYPE A PURPLE RIGID CPLG

C-4

C-4 1 1/4 GALV PURPLE A RIGID CPLG

C-4

C-4 1 1/2 GRN FLUSH E RIGID CPLG
Industry Standards/Certifications N/A NSF/ANSI 61
Type N/A Rigid Coupling
Style N/A Grooved
Nominal Size N/A 1 1/4 in N/A 1 1/4 in N/A 1 1/4 in N/A 1 1/4 in N/A 1 1/2 in
Housing Material N/A Ductile Iron conforming to ASTM A-536, Grade 65-45-12
Coatings N/A Rust inhibiting paint Color: ORANGE N/A Hot Dipped Zinc Galvanized N/A Rust inhibiting paint Color: ORANGE N/A Hot Dipped Zinc Galvanized N/A Rust inhibiting paint Color: ORANGE
Gasket Material N/A EPDM
Gasket Type N/A Flush Gap N/A Flush Gap N/A Standard C Style N/A Standard C Style N/A Flush Gap
Bolt Material N/A SAE J429, Grade 5, Zinc Electroplated (standard)
Heavy Hex Nut N/A ASTM A563, Grade A, Zinc Electroplated (standard)
Coupling Bolts Size N/A 3/8 x 2 1/4 in
Coupling Bolts Qty. N/A 2
Lubrication N/A Standard Gruvlok, Gruvlok Xtreme™
Application N/A Recommended for wet and dry (oil free air) fire protection sprinkler systems. For freezing conditions, Gruvlok Xtreme™ Lubricant is required.
Min. Service Temperature Range N/A -40 ºF
Max. Service Temperature Range N/A 230 ºF N/A 230 ºF N/A 150 ºF N/A 150 ºF N/A 230 ºF
Max. Working Pressure N/A 300 psi
Max. End Load N/A 649 lb N/A 649 lb N/A 649 lb N/A 649 lb N/A 851 lb
Range of Pipe End Separation N/A 0-1/32 in
Product Number N/A 0890019185 N/A 0890023377 N/A 0890020357 N/A 0890023211 N/A 0890019193
UPC Code N/A 69029194605 N/A 69029196797 N/A 69029194614 N/A 69029194634 N/A 69029194606
HPH Code N/A
Weight N/A 1.48 lb N/A 1.48 lb N/A 1.37 lb N/A 1.48 lb N/A 1.66 lb