Bronkhorst FLOW-SMS Series Manual de usuario descargar pdf (Pagina 14)

BRONKHORST HIGH-TECH B.V.

2.13.7 Needle Valves

- Removal

Ensurethatthesystemisdepressurisedbeforetakingthe

needlevalveapart.

Loosenthe4boltswithhexagonheadcounterclockwise 

toreleasetheneedlevalve.

9.17.057 page 14



- Replacement

ReplacethegasketsAS‐007andAS‐017,Viton,

EPDMorKalrez.

Allwettedpartshavetobeabsolutelyclean,don’tuseoil

orgreaseandavoiddust!

Replacetheneedlevalvecentrebeforetightenthebolt

withhexagonheadbyturningclockwise,tightencrosswise

withM30,9Nm.

Nowtheneedlevalvehastobetestedforleakageandfunction.



- Adjustment

   

Theneedlevalvesareadjustable

withaslottedheadscrewdrivertoadjusttheflow.

TheNV‐01isalsolockablewitha

nutbecausethefineadjustability.

AvailableNeedlevalves



Modelnumber Description

NV‐01 Kvmin1.0x10

‐3

,Kvmax6.8x10

‐3

Lowflowneedlevalve,fine

NV‐02 Kvmin5.6x10

‐3

,Kvmax5.6x10

‐2

Highflowneedlevalve,coarse





2.13.8 Pneumatic operated shut off valves NC or NO

Theactuatingpressurehastobesuppliedwitha3/2wayvalve.

Whenthevalveisnotactuatedtheairactuationinputhastovent.

Actuationpressure :

Minimal :3 bar(g).

Maximal :9 bar(g).



- Removing

Ensurethatthesystemisdepressurisedbeforetaking

thepneumaticshutoffvalveapart.

Removetheactuatingpressuretubingandloosenthe4bolts

withhexagonheadcounterclockwisetoreleasethevalve.



- Replacing

ReplacethegasketAS‐007andAS‐017,Viton,EPDMorKalrez.

Allwettedpartshavetobeabsolutelyclean,don’tuse

oilorgreaseandavoiddust!

Replacethepneumaticshutoffvalveandtightenthe

boltswithhexagonheadbyturningclockwise,tighten 

crosswisewithM30,9Nm.

Replacetheactuatingpressuretubing.

Nowthepneumaticshutoffvalvehastobetestedforleakageandfunction.



AvailablePneumaticshutoffvalves



Modelnumber Description

PV‐01‐NC‐V Kv=0,20



NormallyClosedViton

PV‐01‐NC‐E Kv=0,20



NormallyClosedEPDM

PV‐01‐NC‐K Kv=0,20



NormallyClosedKalrez

PV‐01‐NO‐V Kv=0,20



NormallyOpenViton

PV‐01‐NO‐E Kv=0,20



NormallyOpenEPDM

PV‐01‐NO‐K Kv=0,20



NormallyOpenKalrez



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