User Manual Q&AAnswer
Feb 26, 2025 - 08:19 PM
To properly install the SHURJOINT XH-1000 Extra Heavy Duty High Pressure Rigid Coupling, follow these steps:
1. Inspect Pipe Ends: Ensure that the exterior surface of the pipe ends is free from any defects such as indentations, projections, loose paint, scale, dirt, chips, grease, and rust.
2. Check Gasket: Verify that the gasket supplied is correct for the intended service. The gasket grade is identified by a color code. Refer to page 36 of the instruction manual for additional information on gaskets.
3. Lubricate Gasket: Apply a thin layer of Shurjoint Lubricant or a compatible lubricant to the sealing lips of the gasket and the exterior of the gasket. This helps in smoothly inserting the pipe and mounting the couplings without pinching. Consider the system temperature when selecting a lubricant. See page 38 of the manual for details.
4. Install Gasket: Place the gasket over one end of the pipe, ensuring that the pipe end is exposed. No part of the gasket should overhang this end of the pipe.
5. Bring the Mating Pipe Together: Align the two pipe ends to be joined and slide the gasket over the ends, centering it between the grooves of the pipe. No part of the gasket should protrude into the groove of either pipe.
6. Assemble Coupling: Start with the two coupling halves separated.
7. Assemble Coupling Halves: Install one coupling half at a time over the gasket, ensuring that the coupling keys engage the grooves.
8. Insert Bolt & Nut: Insert the first bolt and hand-tighten the nut. Insert the second bolt and nut in the same manner, ensuring that the oval neck of both bolts engage the holes in the coupling housing.
9. Tighten Nuts: For sizes 2" to 4", refer to the torque requirement table. It is normal to see small gaps between the bolt pads, which should be equal on both sides of the coupling. For sizes 6" to 12", tighten nuts alternately and equally until the bolt pads meet and make metal-to-metal contact. Tighten nuts by another one quarter to one half turn to ensure snug and secure bolts and nuts. The use of a torque wrench is not required.
Caution: Uneven tightening of bolts and nuts may pinch the gasket, resulting in a leak. Never exceed the torque stated in the table on page 34. Excessive tightening of nuts may cause bolt or joint failure.
Note: For couplings in sizes 10 inches and larger used on schedule 10S or 5S stainless steel pipe, torque beyond metal-to-metal contact is required. Refer to the torque table on page 34 of the 2017 installation instructions for the specific torque range.
Please refer to the SHURJOINT XH-1000 Extra Heavy Duty High Pressure Rigid Coupling Instruction Manual for detailed illustrations and additional information.
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