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Liquid pulsation damper 

Assembly and function 

KNF Flodos BA_FPD_EN_04_069182 
Translation of Original Operating and Installation Instructions

 

5.  Assembly and function 

 

The working principle 

5.1.

The liquid pulsation damper is constructed so that it reduces the 
pressure pulsation that is generated in particular by reciprocating 
displacement pumps. 
In doing so, the quality of the damping is significantly influenced by 
the banking-up pressure generated in the liquid pulsation damper. 
Various parameters are important in determining the quality of the 
damping. The main criteria are the flow rate, residual pulsation and 

the system pressure downstream of the liquid pulsation damper. 

Summary of Contents for FPD 06

Page 1: ...d observe these Oper ating and Installation Instruc tions An additional letter prefixing the FPD model code is a coun try specific designation with no technical relevance Contents Page 1 About this do...

Page 2: ...the possible consequences of failure to observe the warning The signal word e g Warn ing indicates the level of danger This specifies measures for avoiding the danger and the consequences of failure t...

Page 3: ...fficiently large filter area must be used upstream of the liquid pulsation damper The 51 versions of our liquid pulsation dampers have been certi fied by NSF according to the standard NSF ANSI 169 and...

Page 4: ...NSF ANSI 169 standard regulates OEM products it does not define cleaning methods for specific OEM products All parts in contact with the medium can be replaced as spare parts without losing the certif...

Page 5: ...or handling such media Always ensure adherence to all information stickers on the liquid pulsation damper such as flow direction arrows and type plates and keep stickers in legible condition All repla...

Page 6: ...69182 Translation of Original Operating and Installation Instructions 6 All repairs to the liquid pulsation damper must be carried out by the relevant KNF Customer Service team Only use genuine parts...

Page 7: ...60 NF 100 FPD 1 06 6 NF 1 5 NF 1 10 NF 1 30 NF 1 60 FPD 10 10 NF 300 NF600 FPD 1 10 10 NF 1 100 NF 1 300 NF 1 600 Tab 2 Materials selection Head material selection FPD 06 KPZ FPD 06 KP 51Z FPD 1 06 KP...

Page 8: ...r models with KT TT max 40 mWG Hydraulic connections Parameter Value Thread for connecting piece FPD 06 1 06 G 1 8 Thread for connecting piece UFPD 06 1 06 NPT 1 8 Thread for connecting piece FPD 10 1...

Page 9: ...that it reduces the pressure pulsation that is generated in particular by reciprocating displacement pumps In doing so the quality of the damping is significantly influenced by the banking up pressur...

Page 10: ...quid pulsation damper when using a pump with integrated overpressure limiting 27 is not recom mended In this case to secure the system a pressure control valve FDV should be connected downstream of th...

Page 11: ...rking in an area under pressure this is imperative to prevent the hoses from coming off the hose connectors In the case of special models the internal nozzle cross section specified in the system para...

Page 12: ...ves Rinse the liquid pulsation damper with a neutral liquid and pump empty 7 2 1 Flushing the liquid pulsation damper When transferring aggressive media KNF recommends flush ing the liquid pulsation d...

Page 13: ...position of the O ring 4 and the sealing cord 3 6 Carefully insert the new auxiliary diaphragm 6 7 Changing the O ring 7 4 Remove the old O ring 4 1 Insert the new O ring 4 in its groove 2 Changing t...

Page 14: ...required see Chapter 7 2 Viscosity of the transferred medium is too high Contact KNF Incorrect interchange of outlet and inlet line connections Remove outlet and inlet lines and re connect correctly T...

Page 15: ...pulsation damper model the serial number and the transferred media in the form below and send the signed form together with the flushed and cleaned liquid pulsation damper to KNF customer services se...

Page 16: ...Liquid pulsation damper For your notes KNF Flodos BA_FPD_EN_04_069182 Translation of original Operating and Installation Instructions 16...

Page 17: ...Liquid pulsation damper For your notes KNF Flodos BA_FPD_EN_04_069182 Translation of original Operating and Installation Instructions 17...

Page 18: ...KNF worldwide Please find your local KNF partners at www knf com...

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