TONISCO DN125-DN250 Hot Tapping Valve

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Basic Information

TONISCO Hot tap valves are used to connect new cutomers to the existing district heating or cooling systems without cutting off the heat/cold supply to other customers. TONISCO’s line of hot tapping valves are desingned for weldable pipeline systems.

The range covers all the nominal dimensions from DN15 to DN600. All the valves are full bore, permitting the Hot tapping to be carried out with the largest possible Hole size. TONISCO hot tapping valves can be installed to underground pipelines.
  • Temperature range: 0 – +200 °C
  • Applications: District heating & cooling
  • Fluids: water and glycol-water, max. 50%
  • Minimum storage temperature: – 40 °C

Product Details

Operation applications:
District heating & cooling, different pipe networks in process plants

Applicable Fluids
Non-flammable or non-explosive fluids


Steel Steel St 35.8/1 l /P235GHTC1 high-grade seamless pipe
Dimension D x a x t (1) Ds x Hh x t (1,1) (mm)
Specification DIN 2448/81 EN 10220/02 EN 10216-2/02+A2/07 TC1 Ad-200 Merkblatt W4/08, PED 92/23/ES

DIN 17175/79 – PED 92/23/EC

Normalized hot finished
Sealings EPDM (VITON)
Max. Operating Temperature 160 °C (200 °C with Viton)
Max. Operating Temperature PN 25 (bar) (Installation pressure PN16)
Steel Steel S355K2 + N
Dimension c x b (mm)
Specification S 355 K2 + N / EN 10025-1,2:2004 Heavy Plates Hot Rolled
Steel Sandvik 15LM (AISI 1074, W.-Nr. 1.1248)
Specification EN 10051, EN 10163-2, EN 10204-2,2 Hot Rolled