Line Jetting

Why jetting beats snaking on a grease line

A cable auger bores a hole through the blockage. Flow returns and everyone declares victory, but the pipe wall is still coated and the opening closes back up, usually sooner than last time. Picture a four inch line with an inch of hardened grease around the whole inside. A cable punches a two inch channel through it and water moves again, but you still have a four inch pipe doing the work of a two inch one, and the coating is still there collecting everything that goes past. Jetting scours the wall back toward bare pipe, so the interval resets properly. The tell that you have been snaking a grease problem is a line that needs clearing more often each time: six months, then four, then every few weeks, until it stops being a maintenance item and becomes the reason you closed early on a Friday.

Jetting and the trap are the same problem

A kitchen line that keeps blocking with grease and a trap that is not being serviced properly are usually the same story. Clearing the line without fixing the trap interval means doing it again. Because we handle both, it is a single conversation rather than two vendors each solving half. The physics is not complicated. A trap past a quarter full has lost the still volume it needs for grease to float and solids to settle, so FOG rides out through the outlet into the lateral, where the water cools and it sticks to the pipe wall. Every service after that adds another layer. Jetting takes the layers off, but if nothing upstream changes they start building back the next day.

Matching the pressure and the nozzle to the pipe

Jetting is not one setting. Pressure, flow volume and nozzle choice all get picked for the line in front of us. A hardened grease line wants a different nozzle from a sand-loaded storm lateral, and a rotating head that cuts well through heavy buildup is the wrong tool in old, thin-walled or already damaged pipe. Cast iron that has been in the ground since the sixties gets a gentler approach than modern PVC. Volume matters as much as pressure, because it is flow that carries the material you have cut loose back to the access point instead of leaving it to pack up again twenty feet further down. This is the part that separates jetting from just aiming water at a problem.

When repeat blockages mean the pipe itself

Buildup blocks a line gradually and it blocks it anywhere. A pipe defect blocks it repeatedly, and it blocks it in the same place every time. A belly, a section that has sagged so water and solids sit in it instead of moving on, will catch material endlessly no matter how well it is cleaned. So will an offset joint, a cracked section, or intruding roots. In this part of the state settlement in soft fill is common enough that bellies are a routine finding rather than an exotic one. If we clear the same spot on the same line three times, we will say so plainly, because at that point you are paying maintenance rates for what is actually a repair, and you deserve to know which one you are buying.

Storm lines and floor drains, not only kitchens

The same truck and the same hose clear more than restaurant laterals. Storm lines between catch basins silt up with sand and landscape debris and then quietly stop carrying what the basins collect, which is why a property can have clean basins and still hold water. Floor drains and trench drains in kitchens, garages and wash bays load with sediment and grease together. Because there is a vacuum truck on the same job, what gets cut loose comes out and leaves with us under permit rather than being flushed downstream to become somebody else’s blockage next month.

Worth knowing

If a line has blocked repeatedly at the same point, that can indicate a break, a belly or an offset joint rather than simple buildup. Repeat blockages in one spot are worth investigating properly.