ADPD- Automatic pulsation dampeners
in Polypropylene, PVDF, PPS-V
Standard version: II 3/3G c IIB T 135C (for Zone 2)
Conduct version: II 2/2GD c IIB T 135C (for Zone 1)

ALPHADYNAMIC automatic pulsation diaphragm dampeners are known for their high performance and sturdiness. They are used below stream from diaphragm pumps on the delivery circuit to minimise pressure differential; they are used with fluids that have an apparent viscosity of up to 50.000 cps (at 20C) even with the presence of suspended solid parts of a considerable size.
ALPHADYNAMIC dampeners adapt automatically to the system's conditions without the need for manual regulation or calibration.
Its high capacity to minimise pulsations, vibration and air hammer make it a piece of equipment that safeguards and evens the fluid pumped.
The vast choice of construction materials allows you to determine the best chemical compatibility with the fluid and/or the environment without forgetting the right temperature field.
The dampeners are also available for use in potentially explosive environments (ATEX certification).



A = dampening chamber
B = diaphragms
C = automatic pneumatic pilot
D = air supply pneumatic chamber

The automatic diaphragm dampener is composed of a pneumatic actuator connected to a new-generation diaphragm (Long Life profile). The sturdy external body makes up, on one side of the diaphragm, the actuator's pneumatic chamber for dampening the pressure peak, and on the other side the fluid passage chamber.



A = dampening chamber
B = diaphragms
C = automatic pneumatic pilot
D = air supply pneumatic chamber

The compressed air that enters the counter-pressure chamber behind the diaphragm creates a pneumatic dampening cushion that regulates itself according to the stress exercised by the impulse of fluid pressure generated by the system.


Technical characteristics

  • automatic self-regulating dampening
  • suitable for severe services;
  • use in explosive atmospheres (ATEX certification);
  • environments with high humidity and condensate;
  • dry operation is also possible;
  • supply with non-lubricated air;
  • range of construction materials for fluid compatibility;
  • ease of maintenance and replacement of parts;
  • very good performance/cost ratio.

Installation examples

Diaphragm dampeners must be installed on delivery ducts below stream from pneumatic pumps or wherever pressure differentials of dangerous fluids are generated.


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