Replacing a Broken Rigid Sprinkler Nipple With a Flexible Swing Assembly

A cracked sprinkler nipple can cause a hidden fitting leak, a leaning head, weak zone pressure, or water bubbling around the sprinkler body. Hunter HydroTech often replaces the rigid connection with a flexible swing assembly.

Signs of a cracked nipple

• Water pooling around one sprinkler head
• The head moves loosely or leans
• The head will not tighten into the underground connection
• Part of the nipple remains inside the female fitting
• The zone has reduced pressure after impact damage

Excavate before applying force

Dig approximately 6 to 8 inches around the head. Expose the connection so the underground CRE or CRT can be supported. Do not twist aggressively from the surface because that may crack the fitting or damage the poly zone line.

Remove the broken nipple

If the nipple is broken inside the female threads, a correctly sized nipple extractor may remove it. Work carefully to avoid cutting or distorting the female threads.

If the fitting is cracked, cross-threaded, or cannot hold a new connection, the CRE or CRT should be cut out and replaced.

Upgrade to a swing assembly

For a spray head, install a 050 elbow, 8 to 14 inches of swing pipe, and another 050 elbow. For a rotor, use a 050 elbow at the underground fitting and a 075 elbow at the rotor.

Flush before installing the head

Move the open swing assembly outside the hole and run the zone for 15 to 60 seconds until the water is clear. Inspect the fitting for dirt and stones before installing the head.

Set, test, and backfill

Set the finished head slightly below the grass and level with the soil near the thatch/root layer. Operate the zone, inspect the repaired fitting for leaks, then backfill evenly around the head.

When to call an irrigation technician

Professional service is recommended when the nipple cannot be extracted, the CRE or CRT is damaged, the poly pipe is too short, the line remains pressurized, or the repair involves valves, wiring, multiple leaks, or uncertain fitting types.