The PQR4000 & PQR4500 is an Underpressure Mains Branch Drilling Machine capable of drilling branch sizes in the range ½” – 2″. Both machines can be used across a range of Industries, including Gas, Water and Petrochemical and they have a standard pressure rating of 16 bar which can be upgraded to 25 bar on request. The machines have a built-in feed control ensuring the correct pressure is applied to the cutter whilst drilling, greatly enhancing cutter life.

Both machines are significantly lighter and more flexible than comparable machines and can be operated by one person and is fast and simple to operate with minimal service costs. The PQR4000 & PQR4500 has a travel of 190 mm & 270 mm which, with the use of extension pieces can be extended by 35 mm or 50 mm to extend the travel of the machine.

The PQR4000 & PQR4500 can be supplied as a Machine only, requiring the relevant accessories to be ordered separately. Alternatively, it can be supplied as a PQR4000FK, which contains all the accessories necessary to Drill ¾”, 1”, 1½” & 2” Branch connections (½” and 1¼” are also available).

Both machines are hand operated and a hand ratchet is provided with the machines.


  • Lightweight and compact
  • Easy operation
  • Versatile / Multi-Use
  • Very low service costs
  • Size range – ½”, ¾”, 1″; 1¼”; 1½” & 2″ drillings
  • Variable travel, reducing excavation and reinstatement cost
  • Standard Travel of 190 mm, can be extended or shortened with Extension pieces
  • Used with threaded connections through standard Ball or Gate Valves, or through Ferrules via Ferrule Kits or ¼ Turn (i.e. Erhard, Hawle etc.) Saddle Valves (Kits available to order)
  • Drills Cast & Ductile Iron, Steel, PVC/PE & Concrete lined Pipes
  • Drills through Saddle Valves
  • Drills through UK style Plug or Screw Down Ferrules, using ½” – 1” Ferrule Kits
  • Drills through Welded or bolted fittings connected via Ball or Gate type Valves
  • Feed control – built-in Cutter-pressure control ensures longevity of cutters
  • Economic replacement of Cutters and Pilot Drills
  • High Speed Steel Holesaw Cutters standard for Cast & Ductile Iron and Steel
  • Tungsten Carbide Tipped Holesaw Cutters available for Concrete Lined and AC pipe
  • Coupon Retaining Pilot Drills available
  • PE Cup Drills also available
  • 25 bar upgrade available for higher pressure systems or for drilling Concrete lined pipe
  • Spares Kit available