SAMSON 3241 technology data

Series 240 Pneumatic Control Valve Type 3241-1 and Type 3241-7

Globe Valve Type 3241

Application

Control valve for process engineering and industrial applications

Nominal size DN 15 to DN 300 Nominal pressure PN 10 to PN 40 Temperatures –196 to 450 °C

Type 3241 Globe Valve operated with:

Type 3271 Pneumatic Actuator (Type 3241-1 Control Valve)

• or

Type 3277 PneumaticActuator(Type 3241-7 Control Valve)

•

Valve body made of:

Cast iron

• Spheroidal graphite iron

• Cast steel, cast stainless steel or cast cold-resisting steel

• Forged steel or forged stainless steel

• Special materials

•

Undivided valve bonnet up to DN 150 Valve plug with:

• Metal sealing

• Soft sealing

The modular design of the control valves allows them to be equipped with various accessories:

Positioners, solenoid valves and other accessories according to IEC 60534-6 and NAMUR recommendation. See Information Sheet T 8350 EN for details.

Fig. 1 · Type 3241-1

DN 15 to 150

Versions Standard version fortemperaturesranging from –10 to220°C

–

Type 3241-1 (Figs. 1 and 3) · DN 15 to 300 with Type 3271 Pneumatic Actuator (see T 8310-1/-2 EN)

–

Type 3241-7 (Fig. 2) · DN 15 to 150 with Type 3277 Pneumatic Actuator for integral positioner attachment (see T 8310-1 EN)

Additional versions with:

–

Welding ends

–

Adjustable packing · See Information Sheet T 8000-1 EN

–

Flow divider or AC-1/AC-2 Trim for noise reduction · See Data Sheets T 8081 EN and T 8082 EN

–

Perforated plug · On request

–

Valve plug with pressure balancing · See Technical data

–

Extension bonnet or bellows seal · See Technical data

–

Heating jacket · On request

–

Stainless steel actuator · See T 8310-1 EN

–

Additional handwheel · See Data Sheet T 8310-1/-2 EN

Associated Information Sheets T 8000-x EN Associated Data Sheets for Pneumatic Actuators T 8310-1/-2 EN

Fig. 2 · Type 3241-7

DN 15 to 80, forged steel

Fig. 3 · Type 3241-1

Edition October 2011

DN 200

Data Sheet T 8015 EN

Type 3241 DWA · Version for PSA plants (pressure swing

–

adsorption) · See T 8012-1 EN and T 8015-1 EN Typetested version · For application in heating systems (see

–

Data Sheet T 8016 EN), DIN/DVGW-tested version for gas (see Data Sheet T 8020 EN), liquid fuels and liquefied petroleum gas intheliquidphase (see Data SheetT8022 EN)

ANSI version · See Data Sheet T 8012 EN

–

Versions with dimensions according to Japanese Industry

–

Standard (JIS) · Details on request

Principle of operation

The process medium flows through the valve in the direction indicated by the arrow. The position of the valve plug determines the cross-sectional areabetweenthe seat and plug.

Fail-safe positions

Depending on howthe compression springs arearranged in the actuator (see Data Sheets T 8310-1 EN and T 8310-2 EN for details), the control valve has two different fail-safe positions which become effective upon supply air failure:

Actuator stem extends (FA) The actuator springs close the valve when the supply air fails.

Actuator stem retracts (FE) The actuator springs open the valve when the supply air fails.

Differential pressures

Permissible differential pressures are listed in Information Sheet T 8000-4 EN.

Fig. 5 · Type 3241 Valve, forged steel version

DN 15 to 80 with extension bonnet

Note

Figs. 4 to 6 show configuration examples.

Fig. 6 · Type 3241 Valve, forged steel version

DN 15 to 80 with metal bellows seal

Fig. 4 · Type 3241-1 Control Valve

DN 15 to 150 with Type 3271 Pneumatic Actuator

Fig. 7 · Type 3241 Control Valve, DN 200 to 300

T 8015 EN

Table 1 · Technical data for Type 3241

Nominal size DN 15 to 250 15 to 150 15 to 300 15 · 25 · 40 · 50 · 80

Stainless cast steel

1.4308

Forged steel

1.0460

Material

Nominal pressure

Cast iron

EN-JL1040

10 · 16 16 · 25 10 · 16 · 25 · 40

Sph. graphite

iron

EN-JS1049

Cast steel

1.0619

Stainless cast steel

1.4408

Cast steel

1.6220

Flanges All DIN versions

End connections

Welding ends –

DIN EN 12627 Fig. 2 only for

DN 25, 40, 50, 80, 100, 150, 200, 250, 300 Seat/plug sealing Metal sealing · Soft sealing · High-performance metal sealing Characteristic Equal percentage · Linear Rangeability 50 : 1 for DN 15 to 50 · 30 : 1 for DN 65 to 150 · 50 : 1 for DN 200 and higher

Heating jacket

Up to DN 100 PN 25

DN 125 PN 16

Temperature ranges in °C · Permissible operating pressures acc. to pressure-temperature diagrams (see Information Sheet T 8000-2 EN) Body without extension bonnet –10 to 220 °C

Short

–10…300 °C –10…350 °C –10…400 °C1)–50…450 °C –50...300 °C –50...300 °C –10…400 °C1)–50...450 °C

Long

Short

–10…300 °C –10…350 °C –10…400 °C1)–50…450 °C –50...300 °C –50...300 °C –10…400 °C1)–50…450 °C

Long

– –196...450 °C – –196...300°C – –196…450 °C

– –196...450 °C – –196...300 °C – –196…450 °C

Body with

Valve plug

Extension bonnet

Bellows seal

Standard

Balanced

Metal sealing –196 to 450 °C

Soft sealing –196 to 220 °C

with PTFE ring –50 to 220 °C · Lower temperatures on request

w. graphite ring 220 to 450 °C

Stainless

forged steel

1.4571

–

Leakage class according to IEC 60534-4

Metal sealing Standard: IV · High-performance metal sealing: V

Valve plug

Balanced

Down to –50 °C at p

Soft sealing VI

Metal sealing Standard: IV · With PTFE or graphite pressure-balancing ring

Special version: V · High-performance metal sealing (only with PTFE balancing ring) on request

75 % PN (acc. to AD W10)

max

Table 2 · Materials

Standard version

Forged

steel

1.0460

1.0460 1.4401

1.4006/

1.4008

1.4006

(1.4404)/

1.4008

Valve body

Valve bonnet

Seat

Plug

Plug sealing

Cast iron

EN-JL1040

1.0460/

EN-JL1040

Sph. graphite

iron

EN-JS1049

1.0460/1.0619

Cast steel

1.0619

1.4006/1.4008

1.4006 (1.4404)/1.4008

Stainless cast steel

1.4408

1.4408/

1.4401

1.4404/

1.4409

1.4404/

1.4409

Cast steel

1.6220

1.0566

1.6220

1.4006/

1.4008

1.4006

(1.4404)/

1.4008

Stainless cast steel

1.4308

1.4301

1.4301/

1.4308

1.4301/

1.4308

Sealing ring for soft sealing: PTFE with glass fiber Sealing ring for balanced plug: PTFE with carbon or graphite ring –

Guide bushing 1.4104 1.4571 1.4571 1.4301 1.4104 1.4571

Packing

V-ring packing PTFE with carbon · Spring: 1.4310

Body gasket Metal/graphite

Extension bonnet

1.0460 1.4401 1.0566 1.4301 1.0460 1.4401

Bellows seal

Intermediate piece 1.0460 1.4401 1.0566 1.4301 1.0460 1.4401 Metal bellows 1.4571

1.4541 1.4571

Heating jacket – 1.4404

Stainless

forged steel

1.4571

1.4404/

1.4409

1.4404/

1.4409

Special materials for applications with sea water: 1.4538, duplex 1.4470; nickel-based alloy: 9.4610; other special materials on request.

All seats and metal-seated plug also with Stellite facing; for£DN 100 plug up to seat bore 38 made of solid Stellite available.

Other packings on request (refer to T 8000-1 EN)

Other materials on request

3 T 8015 EN

+ 5 hidden pages