The following table details the recommended torque values for fasteners and components in a Hydronit system:

•  General
  • M5: 4÷5,5 Nm (35÷49 lbf·in )
  • M6: 8÷10 Nm (71÷89 lbf·in)
  • M8: 16÷20 Nm (142÷177 lbf·in)
  • M10: 30÷40 Nm (266÷354 lbf·in)
  • 3/8-16 UNC: 30÷40 Nm (266÷354 lbf·in)
  • 5/16-24 UNF: 16÷20 Nm (142÷177 lbf·in)
•  Pumps
  • M5 for pumps gr.0,5: 8÷9,5 Nm (71÷84 lbf·in)
  • M8 for pumps «G» and «K» type gr.1: 21÷25 Nm (186÷221 lbf·in)
  • M8 for pumps «H» type gr. 1: 31÷35 Nm (274÷310 lbf·in)
• Relays
  • Relay’s electric poles 5/16-24 UNF: 5 Nm (44 lbf·in)
•  Tanks
  • M5 for plastic tank: 0,3÷0,4 Nm (2,66÷3,54 lbf·in)
  • Metal tank’s plugs 1/2 BSP (ISO 228): Max 10 Nm (89 lbf·in)
  • Plastic tank’s plugs 1/2 BSP (ISO228): Max 10 Nm (89 lbf·in)
  • Steel clamp band for plastic tank neck: 2,1÷2,5 Nm (18,59÷ 22,13 lbf·in)
• Valves and Plugs
  • Valves and plugs 1/8 BSP: 12÷15 Nm (106÷133 lbf·in)
  • Valves and plugs 1/4 BSP (ISO 228): 15÷20 Nm (133÷177 lbf·in)
  • Valves and plugs 3/4-16 UNF: 25÷30 Nm (221÷266 lbf·in)
  • Valves and plugs M18x1,5: 30÷35 Nm (266÷310 lbf·in)
  • Relief valves M20x1,5: 50 Nm (443 lbf·in)
  • Relief valves M14x1: 15÷25 Nm (133÷221 lbf·in)
  • Valves and plugs 9/16-18 UNF: 6÷20 Nm (53÷177 lbf·in)
  • Valves and plugs 5/8-18 UNF: 15÷25 Nm (133÷177 lbf·in)
  • Valves 7/8-14 UNF: 45÷55 Nm (398÷487 lbf·in)
• E10103010 EBP Flange
  • M6 for E10103010 flanges: 6 Nm (53,1 lbf·in)