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
• API Couplings have tapered threads per API 5B
• 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” | 8" | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1.576 | 2.054 | 2.200 | 2.875 | 3.375 | 4.000 | 4.625 | 6.296 | 7.390 | 9.625 | |
| 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 | 5-1/4 | |
