Steel Merchant and API Line Couplings

Steel Merchant and API Line Couplings

• Meets or exceeds all applicable ASTM, ANSI and API standards
• Merchant Couplings stocked 1/8" - 6" diameters
• API Line Couplings stocked 1/8" - 8" diameters
• API Couplings are rated at 300 PSI
• Full stock of specialty couplings, such as Half Couplings and Right and Left Couplings

Dimensions

Nom. Diam. in Inches 1/8” 1/4” 3/8” 1/2” 3/4” 1” 1-1/4” 1-1/2” 2” 2-1/2” 3” 4” 5” 6”
Standard Merchant Coupling
O.D. In. 0.563 0.719 0.875 1.063 1.313 1.576 1.900 2.200 2.750 3.250 4.000 5.000 6.296 7.390
Length In. 13/16 1-3/16 1-3/16 1-9/16 1-5/8 2 2-1/16 2-1/16 2-1/18 3-1/8 3-1/4 3-1/2 3-3/4 4
Half Coupling
O.D. In. 0.563 0.719 0.875 1.063 1.313 1.576 1.900 2.200 2.750 - - - - -
Length In. 11/32 17/32 17/32 23/32 3/4 15/16 31/32 31/32 1 - - - - -
API Coupling
O.D. In. 0.563 0.719 0.875 1.063 1.313 1.660 2.054 2.200 2.875 3.375 4.000 5.000 6.296 7.390
Length In. 1-1/16 1-5/8 1-5/8 2-1/8 2-1/8 2-5/8 2-3/4 2-3/4 2-7/8 4-1/8 4-1/4 4-1/2 4-5/8 4-7/8

 

 

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