CALEFFI 574 series Manual - Página 7
Procurar online ou descarregar pdf Manual para Produto de canalização CALEFFI 574 series. CALEFFI 574 series 12 páginas. Testable, reduced pressure zone backflow preventer
Também para CALEFFI 574 series: Manual (16 páginas)
Imprimir página
Close downstream
-Permanent leakage
shut-off valve
-No leakage
-Discharge does not
open. Leakage is
Close upstream
minimal and lasts
shut-off valve and
more than 1 minutes.
open upstream
-Discharge opens
pressure control cock
abruptly, emptying in
less than 1 minute.
Open downstream
-Continuous discharge
shut-off valve
-No discharge
RAPID INSPECTION PROCEDURE
Upstream valve or
discharge valve
leaking
Discharge blocked
Downstream valve
leaking
7
Dismantle and
inspect
Dismantle and
inspect
Dismantle and
inspect. Put back
into operation.