Imovilli Pompe S.r.l.
Reggio Emilia – Italy
www.imovillipompe.it
Manuale d’officina – Pompe a membrana 1/11
WORKSHOP MANUAL
DIAPHRAGM PUMPS
1.0
A-M VALVE ZONE CONTROL on pumps with internal manifolds
(M25 – M29 – M30 – M35 – M 50 – M60 – M73 – M104S – M135S)
1.1 Remove the valve covers and remove the A-M valves
from the cylinder head
NOTE: The suffix A-M means "Suction / Delivery"; in
fact, the pump valves can be used indifferently in
suction and delivery
1.2 Break down the valves into the individual elements and
proceed with their inspection; if a component is
particularly worn or damaged they will need to be
replaced.
1.3 Check the inside of the valve covers: if they show signs
of wear in the contact areas with the valve caps or
damage in the plasticization, they must be replaced.
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