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P. 874

Back pressure valve



                                                                                                                                   Back pressure valve
                                                                                                                                                                                        NG10
                                                                                                                                   Sandwich construction                                ISO 4401-05
                                                                                                                                    ◆  pilot operated or direct operated
                                                                                                                                    ◆  p  = 400 bar
                                                                                                                                       max
                                                                                                                                    ◆  p N max  = 350 bar
                                                                                                                                    ◆  Q  = 100 l/min
                                                                                                                                       max


                                                                                                                                   DESCRIPTION                                          APPLICATION
                                                                                                                                   Pilot or direct operated backpressure  valve in sandwich construction.    Backpressure  valves  with  pressure  adjustment  in  A,  B  or  T,  are
                                                                                                                                   The backpressure valve, also called pre-loading valve, opens the main   used for pre-loading of cylinders / motors, resp. for reaching a back







                                                                                                                                   spool when the adjusted pressure is reached.           pressure.


                                                                                                                                   SYMBOL
                                                                                                                                   Sandwich execution       Sandwich execution          Sandwich execution
                                                                                                                                   G..SA..-A                G..SA..-B                   G..SA..-T


                                                                                                                                     A    P      T    B       A    P      T    B          A    P      T    B


                                                                                                                                   Note!     ◆  Direct operated execution drawn
                                                                                                                                             ◆  All variants are also available pilot operated





                                                                                                                                   TYPE CODE

                                                                                                                                                                                                          G        S  A10  -     -     -     #
                                                                                                                                    Back-pressure valve
                                                                                                                                    Direct operated                  A
                                                                                                                                    Pilot operated                    V
                                                                                                                                    Type of adjustment   Key          S
                                                                                                                                                        Control knob   D
                                                                                                                                                        Cover        A
                                                                                                                                    Sandwich construction

                                                                                                                                    Mounting interface acc. to ISO, NG10
                                                                                                                                    Type list / Function   in T       T   in A           A
                                                                                                                                                        in B         B

                                                                                                                                    Nominal pressure range (p ) of the built-in screw-in cartridge
                                                                                                                                                     N
                                                                                                                                    Sealing material    NBR
                                                                                                                                                        FKM (Viton)   D1
                                                                                                                                    Design index (subject to change)
                                                                                                                                    2.1-760








                                                                                                                                                      www.wandfluh.com  Illustrations are not binding  Data subject to change  1/3  Edition: 21 32  2.1-760 E
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