Series 240 Electric Control Valve Type 3241/3274 Globe Valve Type 3241 Electric Control Valve Type 3244/3274 Three-way Valve Type 3244

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1 Series 240 Electric Control Valve Type 3241/3274 Globe Valve Type 3241 Electric Control Valve Type 3244/3274 Three-way Valve Type 3244 Application Versatile control valves with globe or three-way valve for industrial applications as well as for heating, ventilation and air-conditioning systems DN 15 to DN 150 PN 16 to PN 40 Temperature range between 196 C and +450 C Conversion of valve sizing coefficients: C V (in US gallons/min) = 1.17 K VS (in m³/h) K VS (in m³/h) = 0.86 C V (in US gallons/min) Type 3244 Three-way Valve or Type 3241 Globe Valve with Type 3274 Electric Actuator Valve body made of: Cast iron Cast steel or Cast stainless steel Type 3241 also in spheroidal graphite iron or forged steel Undivided valve bonnet The Type 3274 Electrohydraulic Actuator is available in various versions (refer to Data Sheet T 8340 EN for details): With electric override With mechanical override With fail-safe action With additional electrical equipment (limit switches, potentiometer, positioner) Versions Standard version for temperatures from 10 C to +220 C Type 3241/3274 (Fig. 1) Type 3241 Globe Valve with Type 3274 Electrohydraulic Actuator Type 3244/3274 (Fig. 2) Type 3244 Three-way Valve with Type 3274 Electrohydraulic Actuator Fig. 1 Type 3241/3274 Further versions with Insulating section See Technical data Metal bellows seal with backup packing See Technical data Heating jacket See Technical data Also available Typetested versions See Data Sheet T 5871 EN Fig. 2 Type 3244/3274 Associated Information Sheet Associated Data Sheet for electrohydraulic actuator T 5800 EN T 8340 EN Edition August 2006 Data Sheet T 5874 EN

2 Principle of operation (Figs. 3 to 5) The medium flows through the valve in the direction indicated by the arrow. The Type 3244 Three-way Valve is available for either mixing service (Fig. 4) or diverting service (Fig. 5). The valves cannot be modified to suit the other service type as the plug is welded to the plug stem. To achieve the maximum flow rate in diverting valves in size DN 65 and larger, port AB-A can be designed for higher K VS coefficients than port AB-B (see Table 2). When mounted in the return flow pipe of a heating system, mixing valves can be used for diverting service and diverting valves can be applied for mixing service. Both valves can be equipped with a bellows seal or an insulating section to meet special requirements such as in vacuum applications, and with aggressive media or high temperatures. The Type 3274 Actuators come in different versions depending on the nominal thrusts (see Table 6). Standard versions are equipped with either an electric or a mechanical override. The actuators are available with or without fail-safe action. Fig. 3 Type 3241/3274 Electric Control Valve with Type 3274 Electric Actuator and Type 3241 Globe Valve Sizing and selection of the control valve 1. Calculate appropriate K V coefficient according to DIN EN Select valve size and K VS coefficient from Table Determine permissible differential pressure Δp from Table Select suitable actuator from Data Sheet T 8340 EN, taking into account the thrust, travel, and transit time. 5. Select materials, pressure and temperature from Tables 1 and 2, also taking into account the pressure-temperature diagram. 6. Optionally, select additional electrical equipment (refer to Data Sheet T 8340 EN). Terms for control valve sizing according to DIN EN 60534, parts 2-1 and 2-2: F L = 0.95; x T = 0.75 AB A Ordering text Electric Control Valve Type 3241/3274 or Type 3244/3274 DN, body material, PN Actuator Type Power supply V, Hz Optionally, special version Fig. 4 Type 3244/3274 Electric Control Valve with Type 3274 Electric Actuator and Type 3244 Three-way Valve for mixing service B AB A Fig. 5 Type 3244 Three-way Valve for diverting service B 2 T 5874 EN

3 Table 1.1 Technical data Type 3241 (globe valve) 3244 (three-way valve) Nominal size DN Nominal pressure PN 16 to 40 Rated travel mm DN 15 to 80: 15 DN 100 to 150: 30 Seat/plug sealing Metal sealing soft sealing Metal sealing lapped-in metal Type of end connections All flange forms as specified in DIN (with DN 15 All flange forms as specified in DIN only acc. to DIN EN and DIN EN ) Rangeability DN 15 to 50: 50 : 1 DN 65 to 150: 30 : 1 Characteristic Equal percentage/linear Linear Permissible temperature range with valve body Without insulating section 10 to +220 C With insulating section or bellows seal, short With insulating section or bellows seal, long 10 to 300 C Valve body made of EN-JL to 350 C Valve body made of EN-JS to 400 C Valve body made of to 450 C Valve body made of to 450 C Valve body made of to 300 C Valve body made of EN-JL to 400 C Valve body made of to 450 C Valve body made of to 450 C Valve body made of Permissible temperature range with valve plug Standard, metal sealing 196 to 450 C 196 to +450 C Standard, soft sealing 196 to 220 C Balanced with PTFE ring 196 to 220 C Balanced with graphite ring 220 to 450 C Leakage class according to DIN EN 1349 with valve plug Standard, metal sealing IV IV Standard, soft sealing VI Standard, lapped-in metal DN 15 to 80: IV-S2 DN 100 to 150 : IV-S1 Balanced, with metal sealing, with PTFE ring with graphite ring Table 1.2 Materials Material numbers according to DIN EN Nominal pressure PN 16 PN 16/25 PN 16/25/40 IV III Standard version Type 3241/ / Valve body EN-JL1040 (GG-25) EN-JS1049 (GGG-40.3) (C22.8) (GS-C25) (C22.8) Valve bonnet Seat (seat and plug also available Plug with Stellite facing) Guide bushings Packing V-ring packing, PTFE with carbon (other packings on request) Spring Body gaskets Metal/graphite Insulating section (C22.8) (C22.8) Metal bellows seal Intermediate piece (C22.8) (C22.8) Metal bellows Heating jacket (Type 3241 only) T 5874 EN

4 Table 2 Overview: Nominal sizes, K VS coefficients, seat diameters and maximum differential pressures Δp in bar when p 2 = 0 bar Table 2.1 Type 3241/3274 unbalanced K VS Seat Ø DN Δp in bar when p 2 = 0 Refer T 8340 EN for nominal thrusts Type 3241 Globe Valve, unbalanced With and without metal bellows Combined with Type 3274-xx Actuator -11/-15/-21 1) /-16/ / / Type 3241 Globe Valve, balanced Without metal bellows Plug with metal sealing Combined with Type 3274-xx Actuator -11/-15/-21 1) 40 2) 40 2) 40 2) 40 3) 40 2) 40 4) / ) 40 2) 40 2) 40 3) 40 2) 40 4) Type 3241 Globe Valve, balanced With metal bellows Plug with metal sealing Combined with Type 3274-xx Actuator -11/-15/-21 1) 40 2) 38 2) ) ) / ) 40 2) 40 2) 31 3) 40 2) ) ) Refer to Data Sheet T 5871 EN for permissible differential pressures for uses as typetested control valves. Type Actuator with fail-safe action Actuator stem extends, use Type for reverse function. 2) Pressure-balanced for DN 65 and larger 3) DN 100 only 4) Not DN T 5874 EN

5 Table 2.2 Type 3244/3274 for mixing or diverting service K VS Seat Ø DN Δp in bar when p 2 = 0 Refer T 8340 EN for nominal thrusts Mixing valve with Type 3274-xx -11/-15/ Diverting valve with Type 3274-xx -11/-15/ T 5874 EN

6 Table 3 Dimensions and weights Table 3.1 Type 3241 Globe Valve (without actuator) Nominal size DN Length L mm Height H1 mm H2 + H Height H2 mm ) 415 1) Height H3 mm Height H4, valve closed mm Height H5 mm Weight kg ) For valve body material EN-JL1040 (GG-25) Table 3.2 Type 3241 Globe Valve with insulating section/with bellows seal (without actuator) Nominal size DN Height H9 Weight Short/with bellows mm ) 672 1) Long/long with bellows mm Short/with bellows kg Long/long with bellows kg ) For valve body material EN-JL1040 (GG-25) Table 3.3 Type 3241 Globe Valve with heating jacket (not for valve body made of EN-JL1040 or EN-JS1049) Nominal size DN a mm b mm c mm Table 3.4 Type 3274 Actuator Type 3274 Actuator -11 to -14/-21 to to -18 Height H mm Height H6 mm Weight kg at 15 mm travel 90 at 30 mm travel Type 3241 with heating jacket, connecting flange DN 15 or 25, PN 40, DIN Type , Type 3274 Actuator with mechanical override Type 3241 with insulating section or bellows seal 6 T 5874 EN

7 Table 3.5 Type 3244 Three-way Valve (without actuator) Nominal size DN Length L mm Length L1 mm Height H1 mm H2 + H Height H2 mm Height H3 mm Height H4, valve closed mm Weight kg Table 3.6 Type 3244 Three-way Valve with insulating section/with bellows seal (without actuator) Nominal size DN Height H9 Short/with bellows mm Long/long with bellows mm Weight Short/with bellows kg Long/long with bellows kg H H H1 M8 M8 H3 H4 H9 H2 L1 Type 3244/3274 L Type 3244 with insulating section or bellows seal Specifications subject to change without notice. 7 T 5874 EN

8 SAMSON AG MESS- UND REGELTECHNIK Weismüllerstraße Frankfurt am Main Germany Phone: Fax: Internet: T 5874 EN