There are a number of ways to repair a broken PVC irrigation line. One popular method is to use a slip fix expansion coupling. Doug Donahue from Ewing Irrigation demonstrates in this video.
PVC Lock Flex Coupling:
Ewing Outdoor Supply is the largest family-owned supplier of landscape and water management products in the country. As your business partner, we offer products and education for irrigation and landscape, turf and land management, outdoor living, sports fields, golf and sustainable solutions. Our nationwide network of friendly, knowledgeable staff helps green industry professionals discover products and services for business success.