Heavy Duty Stop Valves Code 18 & 19

The Conflow Code 18 & 19 - Heavy Duty Stop Valves are inline valves to shut off flow in pipelines.

The valve is a screwdown type so that large flows in large diameter pipes can be isolated by the gradual shut off of the valve. This eliminates hydraulic shock waves or water hammer being created which would damage the steel pipes and fittings.

The fully open position gives a true full flow capability thus creating minimal resistance in the pipeline. The 4" unit incorporates a balanced pressure feature, which enables the valve to be opened and closed at high pressure with the minimum of effort.

Typical Applications

  • On water mains in underground mines to isolate areas for maintenance and extension


  • 2", 2 1/2", 3" and 4" sizes available
  • Maximum working pressure 105 bar (Code 18), 125 bar (Code 19)
  • Victaulic, flanged or screwed ends
  • Designed for underground water mains
  • Robust, compact and full bore

The information on this data sheet is accurate to the best of Conflow’s knowledge, however we reserve the right to alter the product specification at any time. For any specific updated detail, please contact us.

Download Spec Sheet