Large Diameter Mainspray Injection
Mainspray is a two component anaerobic polymeric compound formulated for sealing leaking spigot and socket joints on cast iron and steel gas mains, conforming to GIS/LC12 specification. ALH Systems has developed a 3ltr pressure pot to directly inject Mainspray under pressure to reinvigorate and seal joints.
Leaking joints can now be treated without leaving the surface. This can have a big impact where a series of joints needs to be treated at frequent intervals along a main road. Long reach tooling allows the back of a socket to be drilled and tapped to accept a standard brass injection nipple. The repair product is injected into the joint using long delivery tubes and our 3litre or 1litre pressure pot.
Advantages
- Single injection point
- Reduced excavation size
- Reduced time spent in excavation
- Low cost equipment
- Simple operation
- No waste disposal problems
- No on cost
Equipment
1. Back of socket long handled tooling. This system is used to drill, tap and fit a brass injection nipple from above ground.
2. 1Ltr pressure pot, ideal for tier 1 joints. Portable, easy to use, requires very low maintenance.
3. 3ltr Large diameter pressure pot, suitable for 3”-48” joints. This system uses a spring balance to accurately measure the amount of sealant being dispensed.
The video below demonstrates how the Large Diameter Mainspray Injection system works.
