Pneumatic Control ValveType 3248-1 and Type 3248-7
Mounting andOperating Instructions
EB 8093 EN
Edition September 2008
Fig. 1 · Type 3248 as globe-pattern valve and angle-pattern valve, both fitted with Type 3277 Pneumatic Actuator
Page 1: ...ol Valve Type 3248 1 and Type 3248 7 Mounting and Operating Instructions EB 8093 EN Edition September 2008 Fig 1 Type 3248 as globe pattern valve and angle pattern valve both fitted with Type 3277 Pne...
Page 2: ...ce 8 5 1 Replacing packing seat and plug 9 6 Version with split plug stem extension 11 7 Customer inquiries 13 2 EB 8093 EN Contents Note Non electrical actuators and valves do not have their own pote...
Page 3: ...he order The manufacturer does not assume any responsibility for damage caused by external forces or any other external influence 4 Any hazards which could be caused in the control valve by the proces...
Page 4: ...V ring packing 4 2 Fail safe position Depending on how the springs 8 3 are ar ranged in the actuator the control valve as sumes two different fail safe positions Actuator stem extends When the pressur...
Page 5: ...nd principle of operation Fig 2 Sectional drawings Top section 6 3a Nut Bottom section 6 3b Version with split plug stem extension refer to section 6 Type 3271 Actuator Type 3277 Actuator Globe valve...
Page 6: ...sion 4 Place the actuator on the valve bonnet 5 and screw tight using the annular nut 8 2 5 Read the nameplate on the actuator to determine which bench range signal range with pretensioned springs and...
Page 7: ...range of 0 2 to 1 bar the springs are to be pretensioned by 0 1 bar for example the bench range is shifted by 0 1 bar to 0 3 bar When adjusting the valve a signal pressure of 0 3 bar is to be set as...
Page 8: ...e of the bottom dia phragm case 4 Operation To reverse the direction of action refer to Mounting and Operating Instructions of the respective pneumatic actuator EB 8310 EN for Type 3271 and EB 8311 EN...
Page 9: ...between actuator stem and plug stem and unscrew annular nut 8 2 2 Lift the actuator off the valve Caution To avoid damaging the metal bellows make sure that no torque is transmitted to the bellows we...
Page 10: ...Check that both washers 6 8 are still in the plug stem extension Screw the plug stem tightly into the plug stem extension Tightening torque 50 Nm with DN 25 to 80 and 80 Nm with DN 100 to 150 Seat If...
Page 11: ...escribed in sec tion 2 6 Version with split plug stem extension To keep the overall height of the valve as small as possible for transportation purposes in cold box installations the actuator and valv...
Page 12: ...sem ble demontieren faces upwards As the needle bearing of the tool can only be turned in one direction it must be placed turned by 180 as required for assembly or disassembly Insert 17 mm socket wren...
Page 13: ...in Table 2 7 Insert seal 5 5 into flanged section Slide valve bonnet carefully over the plug stem extension 6 3a to ensure that the packing does not get damaged and place it on the flanged section 8 S...
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Page 16: ...SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 Internet http www samson de EB 8093 EN S Z 2008 09...
