Universal check valve - FF - acetal copolymer obturator - NBR gasket - suitable for high pressure application

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).

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

20010000G 3/8 F2524192
20015000G 1/2 F2520160
20020000G 3/4 F251296
20025000G 1 F25864
20032000G 1 1/4 F18848
20040000G 1 1/2 F18636
20050000G 2 F18520
5065000G 2 1/2 F8-15
5080000G 3 F8-12
5100000G 4 F8-5
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