1. General Introduction
Samson 3241 globe control valve with operation principle when the medium flows through the valve in the direction indicated by the arrow, the valve plug position determines the cross-sectional area between the seat and plug. available size 1/2" to 12", pressure rating ANSI Class125 to 300, standard material Cast Iron, Carbon Steel, Stainless Steel, Monel, Hastelloy and etc, applicable for temperature range -325 to 842℉ (-196 to 450℃). It's a threaded seat globe valve which designed for general service applications up to the limits of the ANSI 300 pressure class rating. These general service applications include process events such as erosion, abrasion, corrosion, cavitation, and flashing found in most process control industries.
Samson 3241 globe control valve has several standard options such as temperature extensions, metal bellows seals, heating jacket, high performance metal sealing trim, soft sealing trim, noise attenuation and cavitation prevention trim sets. In addition to these options the valves can be specialized to meet the exact process needs such as NACE version for sour gas service, cleaned for specific service (e.g. Oxygen, Chlorine, High Purity, etc.), or the pressure swing adsorption (PSA) design. It can be assembled with a pneumatic, electric, hydraulic, or electro-hydraulic actuator also offered by the SAMSON group to complete the control valve construction. These control valves are designed according to the modular assembly principle, can be equipped with SAMSON GROUP actuators and valve accessories such as positioners, limit switches, and solenoid valves.
Samson 3241 globe control valve operated with both 3271 and 3277 Pneumatic Actuator, which classified as 3241-1 &3241-7 type. Valve body can be made of, cast iron, cast steel, cast stainless steel or cast cold-resisting steel, forged steel or forged stainless steel and special materials. Valve plug can be treated with metal seal, soft seal and high-performance metal seal.
There are two different fail-safe positions effective upon air supply failure, actuator stem extends (fail-close) operates valve closes or Actuator stem retracts (fail-open) operates the valve open.
2. Technical data for Samson 3241 globe control valve
Valve size | NPS | 1 to 6 | ½ to 2 | ½ to 2 | ½, 1, 1½, 2, 3 | |||||
ASTM material | Cast iron A 126 B | Cast steel A216 WCC | Cast stainless steel A351 CF8M | Cast steel A352 LCC | Cast stainless steel A351 CF8 | Forged steel A105 | Forged stainless steel A182 F316 | |||
Type of connection | Flanges | FF | - | RF | RF | |||||
Welding ends | - | - | DIN EN 12627 Fig. 2 Only for NPS 1, 1½, 2, 3, 4, 6, 8, 10, 12 | - | ||||||
Thread | - | NPT | - | - | ||||||
Seat-plug seal | Metal seal · Soft seal · High-performance metal seal | |||||||||
Temperature ranges in °F (°C) | ||||||||||
Body without insulating section | –10 to +220 °C (15 to 430 °F) | |||||||||
Body with | Insulating section in °C (°F) | –29 to +232 (–20 to +449) | –29 to +427 (–20 to +800) | –50 to +450 (–58 to +842) | –46 to +343 (–50 to +650) | –50 to +300 (–58 to +572) | –29 to +427 (–20 to +800) | –50 to +450 (–58 to +842) | ||
Long insulating section in °C (°F) | - | - | –196 to +450 (–325 to +842) | – | –196 to +300 (–325 to +572 | - | –196 to +450 (–325 to +842) | |||
Bellows seal in °C (°F) | –29 to +232 (–20 to +449) | –29 to +427 (–20 to +800) | –50 to +427 (–58 to +800) | –46 to +343 (–50 to +650) | –50 to +300 (–58 to +572) | –29 to +427 (–20 to +800) | –50 to +450 (–58 to +842) | |||
Long bellows seal in °C(°F) | - | - | –196 to +427 (–325 to +800) | - | –196 to +300 (–325 to +572) | - | –196 to +450 (–325 to +842) | |||
Valve plug | Standard | Metal seal | –196 to +450 °C (–325 to +842 °F) | |||||||
Soft seal | –196 to +220 °C (–325 to +428 °F) | |||||||||
Balanced | With PTFE ring | –50 to +220 °C (–58 to +428 °F) · Lower temperatures on request | ||||||||
With graphite ring | 220 to 450 °C (428 to 842 °F) | |||||||||
Leakage class | ||||||||||
Valve plug | Standard | Metal seal | Standard: IV · High-performance metal seal: V | |||||||
Soft seal | VI | |||||||||
Balanced | Metal seal | Standard IV · With PTFE or graphite balancing ring Special version V · For high-performance (only with PTFE balancing ring) on request |
3. Material Table for Samson 3241 globe control valve
Valve body | Cast iron A 126 B | Cast steel A216 WCC | Cast stainless steel A351 CF8M | Cast steel A352 LCC | Cast stainless steel A351 CF8 | Forged steel A105 | Forged stainless steel A182 F316 |
Valve bonnet | A105/A 126 B | A105/A216 WCC | A182 F316 A351 CF8M | A350 LF2 A352 LCC | A182 F304 A351 CF8 | A105 | A182 F316/ A182 F316L |
Seat | Cr steel UNS S41000/1.4008 | A 182 F316L/ A 351 CF3M | Cr steel UNS S41000/ 1.4008 | A182 F304/ A 351 CF8 | Cr steel UNS S41000/ 1.4008 | A182 F316L/ A351 CF3M | |
Plug | Cr steel UNS S41000 (A182 F316L)/1.4008 | A 182 F316L/ A 351 CF3M | Cr steel UNS S41000/ 1.4008 | A182 F304/ A 351 CF8 | Cr steel UNS S41000/ 1.4008 | A182 F316L/ A351 CF3M | |
Plug seal | Seal ring for soft-seated plug: PTFE with glass fiber | ||||||
Seal ring for balanced plug: PTFE with carbon or graphite ring | – | ||||||
Guide bushings | A 582 430 F | 316L/A182 F316L | 316L/A182 F316L | A182 F304 | A 582 430F | 316L/A182 F316L | |
Packing | V-ring packing: PTFE with carbon · Spring: A479 302 | ||||||
Body gasket | Graphite on metal core | ||||||
Insulating section | A105 | A105 | A182 F316/ A182 F316L | A350 LF2 | A182 F304 | A105 | A182 F316/ A182 F316L |
Bellows seal | |||||||
Intermediate piece | A105 | A105 | A182 F316/ A182 F316L | A350 LF2 | A182 F304 | A105 | A182 F316/ A182 F316L |
Metal bellows | 1.4571 | A182 F321 | 1.4571 | ||||
Heating jacket | – | A182 F316L |
4. KV Coefficients (m³/h) for Samson 3241 globe control valve
Standard plug without flow divider, with equal percentage characteristic .Version with bellows seal up to max. 100 %travel | ||||||||||||||||||||
KVS | CV |
DN |
NPS |
NR |
CH |
Seat Ø [mm] |
Travel [mm] | Travel in % · Flow coefficient (KV coefficient) | ||||||||||||
0 | 5 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | ||||||||
0.1 | 0.12 | 15, 20, 25 | ½, ¾, 1 | Without | Equal percentage | 3 | 15 | 0.0017 | 0.0024 | 0.0030 | 0.0043 | 0.0060 | 0.0084 | 0.0130 | 0.0192 | 0.0269 | 0.0418 | 0.0643 | 0.0985 | 0.150 |
0.16 | 0.2 | 15, 20, 25 | ½, ¾, 1 | 3 | 15 | 0.0019 | 0.0024 | 0.0032 | 0.0048 | 0.0071 | 0.0116 | 0.018 | 0.027 | 0.040 | 0.058 | 0.093 | 0.172 | 0.267 | ||
0.25 | 0.3 | 15, 20, 25 | ½, ¾, 1 | 3 | 15 | 0.0038 | 0.0044 | 0.0054 | 0.0082 | 0.0136 | 0.0210 | 0.0318 | 0.0482 | 0.0766 | 0.119 | 0.185 | 0.274 | 0.315 | ||
0.4 | 0.5 | 15, 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 6 | 15 | 0.008 | 0.009 | 0.011 | 0.019 | 0.029 | 0.044 | 0.064 | 0.093 | 0.131 | 0.191 | 0.284 | 0.436 | 0.753 | ||
0.63 | 0.75 | 15, 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 6 | 15 | 0.013 | 0.019 | 0.024 | 0.036 | 0.053 | 0.072 | 0.103 | 0.143 | 0.213 | 0.315 | 0.461 | 0.676 | 1.0 | ||
1 | 1.2 | 15, 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 6 | 15 | 0.019 | 0.025 | 0.031 | 0.044 | 0.066 | 0.097 | 0.149 | 0.226 | 0.338 | 0.495 | 0.738 | 1.10 | 1.27 | ||
1.6 | 2 | 15, 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 12 | 15 | 0.0240 | 0.0328 | 0.0410 | 0.0627 | 0.096 | 0.147 | 0.221 | 0.339 | 0.515 | 0.779 | 1.16 | 1.71 | 2.59 | ||
2.5 | 3 | 15, 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 12 | 15 | 0.034 | 0.046 | 0.060 | 0.098 | 0.153 | 0.239 | 0.364 | 0.554 | 0.841 | 1.24 | 1.81 | 2.77 | 3.72 | ||
4 | 5 | 15, 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 12 | 15 | 0.082 | 0.096 | 0.118 | 0.177 | 0.267 | 0.382 | 0.564 | 0.872 | 1.39 | 2.37 | 3.53 | 4.19 | 4.5 | ||
6.3 | 7.5 | 20, 25,32,40,50 | ½, ¾, 1,1½, 2 | 24 | 15 | 0.14 | 0.17 | 0.21 | 0.30 | 0.42 | 0.63 | 0.95 | 1.35 | 2.00 | 2.94 | 4.34 | 6.65 | 9.1 | ||
10 | 12 | 20, 25,32,40,50 | ¾, 1, 1½, 2 | 24 | 15 | 0.13 | 0.23 | 0.29 | 0.47 | 0.70 | 1.02 | 1.46 | 2.10 | 3.05 | 4.7 | 8.1 | 10.5 | 12.3 | ||
16 | 20 | ,32,40,50 | ½, 2 | 31 | 15 | 0.35 | 0.44 | 0.53 | 0.78 | 1.19 | 1.79 | 2.6 | 3.8 | 5.6 | 8.5 | 12.4 | 16.1 | 18.3 | ||
25 | 30 | 40, 50, 65, 80 | 1½, 2, 2½, 3 | 38 | 15 | 0.52 | 0.65 | 0.80 | 1.14 | 1.72 | 2.6 | 4.1 | 6.8 | 10.4 | 14.9 | 19.5 | 23.8 | 26.7 | ||
40 | 47 | 50, 65, 80 | 2, 2½, 3 | 48 | 15 | 0.75 | 0.81 | 0.99 | 2.0 | 4.3 | 8.1 | 13.3 | 19.4 | 25.3 | 30.7 | 35.1 | 39.2 | 42.6 | ||
60 | 70 | 65,80 | 2½, 3 | 63 | 15 | 1.7 | 1.9 | 2.2 | 3.3 | 5.6 | 10.4 | 18.4 | 26.3 | 34.4 | 41.8 | 49.3 | 56.3 | 61.9 | ||
63 | 75 | 100,150 | 4,6 | 63 | 30 | 1.6 | 2.0 | 2.5 | 3.5 | 5.1 | 7.2 | 10.4 | 14.8 | 22.3 | 34.5 | 49.4 | 62.5 | 73.0 | ||
80 | 95 | 80 | 3 | 80 | 15 | 2.4 | 3.0 | 3.7 | 5.4 | 7.9 | 11.9 | 19.5 | 28.4 | 38.6 | 50.0 | 61.7 | 74.0 | 85.7 | ||
100 | 120 | 80 | 3 | 80 | 19 | 2.4 | 3.2 | 4.2 | 6.7 | 11.1 | 20.1 | 31.8 | 45.5 | 60.2 | 75.5 | 90.3 | 103.9 | - | ||
100 | 120 | 100,125,150 | 4,6 | 80 | 30 | 1.05 | 1.44 | 2.0 | 3.4 | 5.6 | 8.4 | 13.6 | 22.9 | 39.9 | 59.9 | 80.5 | 99.2 | 115.9 | ||
160 | 190 | 100,125,150 | 4,6 | 100 | 30 | 3.8 | 4.6 | 5.4 | 7.7 | 11.1 | 17.5 | 31.2 | 51.2 | 75.8 | 100.0 | 125.3 | 148.1 | 164.9 | ||
200 | - | 125 | - | 110 | 30 | 4.1 | 5.6 | 6.7 | 9.6 | 12.6 | 17.1 | 26.9 | 44.3 | 77.2 | 115.9 | 155.7 | 191.9 | 217.1 | ||
250 | 290 | 200,250,300 | 8,10,12 | 125 | 60 | 6.9 | 8.3 | 10.0 | 14.1 | 20.3 | 28.8 | 41.9 | 59.3 | 89.8 | 138.8 | 198.3 | 251.3 | 293.1 | ||
260 | 300 | 150 | 6 | 130 | 30 | 7.0 | 8.4 | 11.1 | 19.5 | 36.8 | 67.1 | 100.8 | 136.1 | 169.6 | 203.7 | 235.1 | 264.1 | 289.3 | ||
360 | 420 | 200,250,300 | 8,10,12 | 150 | 60 | 8.2 | 10.4 | 13.2 | 19.6 | 28.6 | 41.4 | 57.9 | 91.9 | 154.5 | 232.1 | 311.5 | 390.1 | 448.8 | ||
630 | 735 | 200,250,300 | 8,10,12 | 200 | 60 | 14.5 | 18.1 | 22.3 | 34.6 | 58.2 | 113.1 | 200.1 | 298.0 | 408.9 | 483.5 | 545.1 | 580.4 | 608.5 | ||
1000 | 1150 | 250,300 | 10,12 | 250 | 120 | 13.9 | 19.5 | 27.5 | 46.2 | 76.4 | 118.3 | 177.8 | 260.4 | 399.9 | 612.2 | 843.9 | 1074.2 | 1184.6 | ||
1500 | 1730 | 300 | 12 | 300 | 120 | 20.1 | 28.2 | 39.7 | 66.7 | 103.2 | 153.9 | 231.2 | 338.5 | 519.8 | 795.8 | 1097.0 | 1396.2 | 1502.5 |
5. Typical dimension drawings for Samson 3241 globe control valve
6. Typical dimension drawings for Samson 3241 globe control valve with heating jacket
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