ROHIBB’S  INJECTOR

For  Epoxy  /  Polymer  Injection In  Concrete

This is a unique device to inject low viscosity epoxy resin system into cracks in concrete structures, under air pressure not exceeding 4-5 Kgs/cm² ( approximately 100 lbs/inch2 ).

The device consists of a cylinder containing a smoothly moving piston also made of Nylon and a actuated by air pressure. The cylinder is closed at both ends by screwed caps. The front side contains a ball valve and a braided nylon hose with screw on nozzle. The back side contains a pressure gauge, air release valve and a nozzle for connection to the air compressor or foot pump.

1. The epoxy resin and hardener are mixed as per manufacturer’s specifications and poured into the cylinder by using funnel and opening the ball valve (A). Instead of epoxy system, monopol system ( High molecular Polymer - LV Grade, SLV Grade ) can also be poured into the cylinder.
   
   

2. After filling the cylinder to its rated capacity, the nylon breaded pipe is screwed on the nozzle on the concrete surface. Now the device is held at an angle of approximately 45° to the horizontal.The air compressor or foot pump is used for the material in the cylinder to be pressurized taking care to see that the pressure is initially not more than 2-4 Kgs/cm^2.
   
   

3. The ball valve is now opened and the material is seen to flow through the transcuent braided hose. Before refilling, remove braided pipe. Insert 5mm steel rod through the ball valve to push the piston to the original position. The ball valve is closed and material is again filled in the cylinder as explained before. The process is continued till the crack is filled up.

If the cylinder is used continuously, it should be cleaned along with the ball valve, the connecting hose etc,
with T-50 thinner by flushing.