020
020 Universal check valves 1
020
Check valve FF, plastic obturator, NBR gasket, high pressures
  • Acceptable working temperature range (peaks): -20 (see suitable fluids)–110 °C
  • Working temperature range: 0 (no frost)–95 °C
  • Check valve opening pressure: 0,02 bar
  • Max working pressure art. 005 - 006 - 007 - 008: from G 1/4 to G 1 16 bar; from G 1 1/4 to G 2 10 bar; from G 2 1/2 to G 4 8 bar
  • Max working pressure art. 020: from G 3/8 to G 1 25 bar; from G 1 1/4 to G 2 18 bar
  • Suitable fluids: water for thermal systems, glycol solutions (max 30%), domestic water
  • Threaded connections: ISO 228-1
  • Product codes
  • Description
  • Documentation
  • Alternative products
Product codes
Item code Size P [bar] Download the 3D file
020010000 G 3/8 F 24 192 25
020015000 G 1/2 F 20 160 25
020020000 G 3/4 F 12 96 25
020025000 G 1 F 8 64 25
020032000 G 1 1/4 F 8 48 18
020040000 G 1 1/2 F 6 36 18
020050000 G 2 F 5 20 18
Description
Barberi® check valves are monodirectional devices, allowing the backflow prevention of fluid under pressure. Depending on the model, they are normally used in domestic water installations, booster pump systems, heating systems, central heating systems, heat generators (wall-mounted boilers, solid fuel generators, heat pumps), thermal solar systems, generic industrial and agricultural water systems. Sealing is permitted through forces exerted by a spring and by the fluid pressure against a gasket which guarantees the seal even at very low back pressures. Moreover, the force of the spring allows the valve to have a universal characteristics concerning the installation position. For special applications where high pressure resistance is requested, the same category of valves with metal obturator can be considered (art. 005K, 020K). For applications where high temperatures are requested, the same valves with metal obturator and Viton gasket can be considered (art. 005KV, 006KV, 007KV, 008KV, 020KV).
Documentation
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