Universal check valve - MM - brass obturator - viton gasket

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)–175 °C

Working temperature range: 0 (no frost)–150 °C

Check valve opening pressure: 0,02 bar

Max working pressure art. 005KV - 006KV - 007KV - 008KV:
from G 1/4 to G 1 35 bar
from G 1 1/4 to G 2 25 bar
from G 2 1/2 to G 4 12 bar

Max working pressure art. 020KV:
from G 3/8 to G 1 50 bar
from G 1 1/4 to G 2 35 bar

Suitable fluids: water for thermal systems, glycol solutions (max 50%)

Threaded connections: ISO 228-1

008010000KV G 3/8 M3530240
008015000KV G 1/2 M3520160
008020000KV G 3/4 M3516128
008025000KV G 1 M351080
008032000KV G 1 1/4 M25648
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