Samson 3351 Mounting And Operating Instructions Download Page 2

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Definition of signal words

DANGER!

Hazardous situations which, if not
avoided, will result in death or seri-
ous injury

WARNING!

Hazardous situations which, if not
avoided, could result in death or seri-
ous injury

NOTICE

Property damage message or mal-
function

Note:

Additional information

Tip:

Recommended action



EB 8039 EN

Summary of Contents for 3351

Page 1: ...Mounting and Operating Instructions EB 8039 EN Edition May 2016 Type 3351 Pneumatic On off Valve Type 3351 Pneumatic On off Valve Version with handwheel Type 3351 Pneumatic On off Valve...

Page 2: ...h if not avoided will result in death or seri ous injury WARNING Hazardous situations which if not avoided could result in death or seri ous injury NOTICE Property damage message or mal function Note...

Page 3: ...4 Design and principle of operation 6 5 Installation 8 5 1 Mounting position 8 5 2 Control pressure line 8 5 3 Accessories 8 6 Start up 9 7 Maintenance 10 7 1 Disassembly DN 15 to 80 10 7 2 Assembly...

Page 4: ...d experience as well as their knowledge of the applicable standards The devices comply with the requirements of the European Pressure Equipment Directive 97 23 EC The declaration of conformity issued...

Page 5: ...to 4 Pressure rating PN 10 to 40 Class 150 and 300 Ambient temperature range 35 to 100 C 30 to 212 F Medium temperature range 50 to 250 C 58 to 482 F The Type 3351 Valve bears both the CE and EAC mark...

Page 6: ...epending on the design of the valve seat 2 and where the plug 3 is located inside the valve the valve has two different fail safe actions which become effective when the pressure is relieved from the...

Page 7: ...DN 15 to 50 Version with bellows seal Detailed view connection for control pressure with G female thread A 6 5 7 5 4 5 6 5 5 3 2 3 1 5 5 2 4 2 4 4 3 4 1 5 1 5 9 3 3 3 5 8 A A B 1 1 1 2 2 3 1 R 5 8 5...

Page 8: ...the correlation between con trol pressure and max differential pressure p based on the process medium used 5 Installation 5 1 Mounting position Install the control valve with the actuator in the uprig...

Page 9: ...ch DN 15 to 50 NPS to 2 Mounting accessories for Type 3768 1400 6787 1402 0101 Accessories stem connec tor and screws according to IEC 60534 6 1 1402 1152 DN 65 to 100 NPS 2 to 4 Mounting accessories...

Page 10: ...2 and plug 3 or by damaged fac ings The procedures to disassemble the fail close and fail open valve are not the same as the plug is located differently in the valves A mounting device see Fig 2 and T...

Page 11: ...the seat and the plug in the fail close version unscrew the seat To proceed position the seat wrench see Table 2 on the seat so that its recesses are aligned with the cams of the seat Guide the seat...

Page 12: ...ply a suitable adhesive to the thread of the plug stem Position plug wrench or hex screwdriver and turn the plug stem counterclockwise until it reaches the plug Continue to gradually tension the mount...

Page 13: ...alve bonnet 5 on the body In the fail close version lift the plug stem and carefully guide it through the packing Fasten the valve bonnet by evenly tight ening the nuts 1 1 Thread the lock nut 3 2 ont...

Page 14: ...at 4 5 bar Control pressure and max differential pres sure p Table 4 shows the correlation between con trol pressure and max differential pressure p based on the process medium used The max different...

Page 15: ...0036 1281 0037 1281 0038 Seat wrench 1280 0006 1280 0013 1280 0008 1280 0009 Plug wrench 1281 0049 1281 0049 Table 3 Tightening torques Part Tightening torques Nuts 1 1 M10 20 Nm M12 35 Nm M16 90 Nm...

Page 16: ...psi 10 bar 145 psi 10 bar 145 psi Liquids B A 16 bar 235 psi 10 bar 145 psi 5 bar 73 psi Fail open Min control pressure to close the valve at pmax 4 5 bar 65 psi 4 bar 58 psi Max perm differential pre...

Page 17: ...the SAMSON After sales Service department for support The addresses of SAMSON AG its subsid iaries representatives and service facilities worldwide can be found on the SAMSON website in all SAMSON pro...

Page 18: ...18 EB 8039 EN...

Page 19: ...EB 8039 EN 19...

Page 20: ...SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 3 60314 Frankfurt am Main Germany Phone 49 69 4009 0 Fax 49 69 4009 1507 samson samson de www samson de EB 8039 EN 2016 07 19 English...