Hot Tapping

Tonisco Service can carry out the hot tap process using standard shut-off valves. There’s no need for special hot tap valves. The flexibility and embeddedness make Tonisco Service the most customer oriented and flexible service partner for your water distribution networks.



The hot tap process for a water distribution pipeline begins with the evaluation of the needed connection. The information that the customer needs to provide us are the following:

  • Size and material of the main?
  • Wall thickness of the main?
  • Design pressure and design temperature?
  • Operational pressure and temperature?
  • Hot tap size and pressure Class?
  • Is the use of electric tools allowed in the worksite?


After Tonisco personnel receive the basic information, we can provide you with the budget quote for the hot tap process. We will always make recommendations on the components (valves & fittings), but we can also operate with components provided by the customer.


The Tonisco hot tap process is designed so that we can use normal standard shut-off valves for the hot tap connection. This means that customer does not need to spend a lot of time and money on special hot tap components. Usually, in a low and medium pressure networks a normal mechanical hot tap saddle + shut-off valve combination is sufficient solution. It gives the complete project more flexibility and more room for co-operation between contractors. Tonisco Service is capable of making the hot tap connection to all the pipeline materials used in the potable and waste sector. The most common methods of hot tapping:

  • Steel pipes: welding a reinforcement plate or a weldolet + shut-off ball valve
  • PE pipes: Infusion welded hot tap saddle + Shut-off valve (Gate or ball valve)
  • Other pipe materials: Mechanical Hot tap clamp + Shut-off valve (Gate of ball valve)


To familiarize yourself with different hot tapping options please download the brochure.

Key Features

Key features of Tonisco hot tapping service:

  • No need for service interruption
  • No treated water is lost
  • No need to wait until the line is completely empty – Reduces the filling time substantially
  • Avoids costly redesign of pipeline sections and reduces the cost of planning
  • Removes the necessity to notify of water shortages
  • Co-operation – Sharing of different working stages (welding works)
  • Turnkey planning and execution if needed


Operational parameters – Basic service package:

  • Maximum operational pressure 60 bar @ 40°C
  • Maximum operational temperature 200°C @ 16 bar
  • Hot tap range DN10 (3/8″) to DN1600 (64″)
  • Both ASME and DIN Standards apply


Operational parameters – Special service package:

  • Maximum operational pressure 1480 PSI @ 40°C
  • Maximum operational temperature 371°C @ 700 PSI
  • Hot tap range DN25 (1″) to DN1600 (64″)
  • Both ASME and DIN Standards apply


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Contact Information

Kalkun kehätie 19,

33330 Tampere, 


Customer Service

Customer Service:

+358 3 2611724

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