Series 240 Type 3248-1 and Type 3248-7 Pneumatic Control Valves Type 3248 Cryogenic Valve ANSI version Application Globe or angle valve for cryogenic applications Easy to service due to top-entry design Valve sizes NPS 1 to 6 Pressure rating Class 150 to 600 Temperature range 425 to +149 F 254 to +65 C The Type 3248 Cryogenic Valve is specially designed to meet the requirements of cryogenic applications. Standard metal bellows to meet strict emission requirements Minimized heat leak thanks to the use of a bellows seal and a cryogenic extension bonnet Globe or angle-style valve body Installation in vacuum-insulated pipelines, air separation plants and peripheral plants made possible by a cover plate on the cryogenic extension bonnet Valve maintenance possible without removing it from the pipeline Top entry through the cryogenic extension bonnet allows easy access to the seat, plug and bellows after removal of the actuator The C V coefficients can be modified in wide ranges by replacing the seat and valve plug Fig. 1: Type 3248-7 Pneumatic Control Valve, globe valve with positioner and supply pressure regulator Versions Standard version Temperature range from 320 to +149 F ( 196 to +65 C) Stem sealed by metal bellows and self-adjusting V-ring packing made of pure PTFE or PTFE/carbon Type 3248-1 With Type 3271 Pneumatic Actuator, 175 to 1400-120 cm² effective diaphragm area Type 3248-7 With Type 3277 Pneumatic Actuator for integral positioner attachment, 175 to 750 cm² effective diaphragm area Further versions Temperature range from 320 to 425 F ( 196 to 254 C) Free of oil and grease for oxygen service Version for high-purity gas Pipe jacketing for installation in vacuum-insulated plant components Welding-neck ends (on request) Pneumatic actuator with additional handwheel Cryogenic valves according to DIN EN standard in DN 25 to 150, PN 16 to 100, see Data Sheet u T 8093 EN Fig. 2: Type 3248-7 Pneumatic Control Valve, angle valve with positioner, supply pressure regulator and additional handwheel Associated Information Sheet T 8000-x EN Edition July 2014 Associated Data Sheet for pneumatic actuators T 8310-x EN Data Sheet T 8093-1 EN
Principle of operation The medium flows through the cryogenic valve in the direction indicated by the arrow. The position of the valve plug (3) in relation to the seat (2) determines the flow rate. The metal bellows seal (6.3) guarantees that the medium has no direct contact with the V-ring packing (4.2). The packing to seal the stem to the atmosphere is self-adjusting. The stem seal can be checked at any time for leakage by removing the screw plug at the test connection (4.4). Installation We recommend mounting the valve at an angle between 15 and 25 to the horizontal plane. Please contact SAMSON for smaller mounting angles as additional measures are required in this case. Avoid attaching the bracket or support in the area around bellows nut (refer to the Mounting and Operating Instructions u EB 8093 EN). The medium must flow through the valve in the direction indicated by the arrow on the valve body. Fail-safe action Depending on how the springs are arranged in the pneumatic actuator (see Data Sheet u T 8310-1 EN), the valve has two different fail-safe positions effective upon air supply failure: Actuator stem extends (FA) When the air supply fails, the spring force moves the stem downwards causing the valve to close. Actuator stem retracts (FE) When the air supply fails, the spring force moves the stem upwards causing the valve to open. Differential pressures Permissible differential pressures are listed in Information Sheet u T 8000-4 EN: Valves in Class 150 to 300 according to Tables 4.1 to 4.3 Class 600 according to Tables 5.1 to 5.3 5 4.2 4.4 6.3 1.1 6 1 3 2 1 Body 1.1 Cryogenic extension bonnet 2 Seat 3 Plug 4.2 V-ring packing 4.4 Test connection 5 Valve bonnet with yoke 6 Plug stem 6.3 Plug stem extension with metal bellows Fig. 3: Valve bonnet with yoke for Class 600 Fig. 4: Type 3248-7 Globe Valve, Class 150/300 2 T 8093-1 EN
Table 1: Technical data for Type 3248 Cryogenic Valve Version Body style Globe valve Angle valve Valve size NPS 1 to 6 NPS 1 to 6 NPS 1 to 6 Pressure rating Class 150 to 300 Class 600 Class 150 to 600 Type of end connections Seat/plug seal Characteristic ANSI Welding ends: Socket weld ends NPS 1 to 2 Welding ends: Butt weld ends ASME B16.25 for NPS 3 to 6 Metal seal Soft seal High-performance metal seal Equal percentage or linear Rangeability 50:1 up to NPS 2 30:1 for NPS 3 to 6 Temperature range Leakage class according to ANSI/FCI 70-2 Welding ends: Butt weld ends ASME B16.25 321 to 149 F ( 196 to +65 C) Down to 425 F ( 254 C) on request Metal seal: IV Soft seal: VI High-performance metal seal: V Table 2: Material Valve Globe valve Angle valve Valve body Seat A 351 CF8 CrNiMo steel Plug Metal seal CrNiMo steel V-ring packing Soft seal Cryogenic extension bonnet, metal bellows, bushings, plug stem Seal ring made of PTFE with glass fiber PTFE with carbon or pure PTFE CrNiMo steel Seats and plugs without soft seal also with Stellite facing Plug up to seat bore 48 made of solid Stellite available. Table 3: C V and K VS coefficients Table 3.1: Overview C V 0.12 to 0.3 0.5 to 1.2 2 to 5 7.5 to 12 20 30 47 70 95 75 120 190 300 K VS 0.1 to 0.25 1.4 to 1 1.6 to 4 6.3 to 10 16 25 40 60 80 63 100 160 260 Seat Ø in 0.12 0.24 0.47 0.945 1.22 1.5 1.9 2.48 3.15 2.48 3.15 3.94 5.12 mm 3 6 12 24 31 38 48 63 80 63 80 100 130 Travel in/mm 0.59/15 mm 1.18/30 mm Table 3.2: Nominal sizes and associated C V coefficients 0.12 0.5 2 7.5 C V 0.2 0.75 3 20 30 47 70 95 75 120 190 300 12 0.3 1.2 5 NPS DN 1 25 1½ 40 2 50 3 80 4 100 6 150 T 8093-1 EN 3
Table 4: Dimensions in mm and weights in kg for Type 3248 Globe Valve Table 4.1: Type 3248 Globe Valve in stainless steel, short pattern, Class 150 to 300 (Fig. 5) Socket weld ends Butt weld ends (Schedule 10S) L in/mm 7.75/197 9.25/235 10.50/267 12.50/318 14.50/368 17.75/451 H1 in/mm 29.75/756 29.90/760 29.90/760 33.0/838 32.45/824 35.45/900 H2 in/mm 1.73/44 2.80/71 2.80/71 3.66/93 4.37/111 6.85/174 H5 in/mm 24.0/610 24.0/610 24.0/610 24.0/610 30.31/770 36.34/923 H6 in/mm 9.45/200 9.45/200 9.45/200 ØC in/mm 1.35/34.5 1.95/49.5 2.45/62 ØD in/mm 0.5/12.7 0.62/15.8 0.70/17.5 Weight without actuator lbs/kg 34.5/15.5 56.5/25.5 56.5/25.5 117/53 192/87 318/144 Table 4.2: Type 3248 Globe Valve in stainless steel, long pattern, Class 150 to 300 (Fig. 6) Socket weld ends Butt weld ends (Schedule 10S) L in/mm 8.27/210 9.88/251 11.26/286 13.27/337 15.51/394 20.0/508 H1 in/mm 26.77/680 26.93/684 26.93/684 30.0/762 30.43/773 35.43/900 H2 in/mm 1.73/44 2.80/71 2.80/71 3.66/93 4.37/111 6.85/174 H4 in/mm 17.36/441 17.36/441 17.36/441 17.36/441 17.36/441 21.69/551 H5 in/mm 21.0/534 21.0/534 21.0/534 21.0/534 22.0/559 27.0/686 H6 in/mm 3.15/80 3.94/100 3.94/100 Ød in/mm 9.84/250 10.63/270 10.63/270 14.57/370 16.93/430 16.93/430 ØC in/mm 1.33/33.8 1.91/48.6 2.41/61.1 ØD in/mm 0.50/12.7 0.50/12.7 0.50/12.7 Weight without actuator lbs/kg 33.5/15 55.5/25 55.5/25 115/52 188/85 318/144 The cover plate is prepared for mounting at an angle of 25, mounted unattached and not welded to the insulating section. Other angles for mounting the cover plate on request. 4 T 8093-1 EN
Table 4.3: Type 3248 Globe Valve in stainless steel, long pattern, Class 600 (Fig. 5) Socket weld ends Butt weld ends (Schedule 10S) L in/mm 8.27/210 9.88/251 11.26/286 13.27/337 15.51/394 20.0/508 H1 in/mm 35.31/897 35.2/894 35.2/894 35.71/907 42.03/1067.5 58.43/1484 H2 in/mm 1.73/44 2.80/71 2.80/71 3.66/93 4.37/111 6.85/174 H5 in/mm 24.0/610 24.0/610 24.0/610 24.0/610 30.31/770 36.34/923 ØC in/mm 1.35/34.5 1.95/49.5 2.45/62 ØD in/mm 0.5/12.7 0.62/15.8 0.70/17.5 Weight without actuator lbs/kg 39.7/18 68.4/31 68.4/31 132.3/60 233.7/106 410.1/186 Dimension H1 + 85 mm applies for 1400-120 cm² actuators Table 4.4: Type 3248 Globe Valve in stainless steel, long pattern, Class 600 (Fig. 6) Socket weld ends Butt weld ends (Schedule 10S) L in/mm 8.27/210 9.88/251 11.26/286 13.27/337 15.51/394 20.0/508 H1 in/mm 32.36/822 32.17/817 32.17/817 32.76/832 38.74/984 51.10/1298 H2 in/mm 1.73/44 2.80/71 2.80/71 3.66/93 4.37111 6.85/174 H4 in/mm 17.36/441 17.36/441 17.36/441 17.36/441 21.69/551 23.62/600 H5 in/mm 21.0/534 21.0/534 21.0/534 21.0/534 27.0/686 29.0/737 Ød 2) in/mm 9.84/250 10.63/270 10.63/270 14.57/370 16.93/430 16.93/430 ØC in/mm 1.33/33.8 1.91/48.6 2.41/61.1 ØD in/mm 0.50/12.7 0.50/12.7 0.50/12.7 Weight without actuator lbs/kg 37.5/17 66.5/30 67.5/30 130/59 234/106 410/186 Dimension H1 + 85 mm applies for 1400-120 cm² actuators 2) The cover plate is prepared for mounting at an angle of 25, mounted unattached and not welded to the insulating section. Other angles for mounting the cover plate on request. T 8093-1 EN 5
Dimensional drawings H2 H1 H H3 H6* ØD Øa L X D (X 1:2) H5 ØC 101 H2 H1 H H3 H6* Ød ØD Øa t=3 X L D (X 1:2) H4 H5 ØC H3 H H1 h=30 Øa ØD Ød L t=3 t=3 L H4 H5 Fig. 5: Type 3248-1 Globe Valve Fig. 6: Type 3248-7 Globe Valve Fig. 7: Type 3248-1 Angle Valve * H6 only in Class 150 to 300 and NPS 1 to 2 Table 5: Dimensions in mm and weights in kg for Type 3248 Angle Valve Table 5.1: Type 3248 Angle Valve in stainless steel version, Class 300 (Fig. 7) L in/mm 3.86/98 5.24/133 5.24/133 6.26/159 7.24/184 9.29/236 H1 in/mm 32.68/830 33.27/845 33.27/845 40.04/1017 43.62/1108 43.35/1101 H4 in/mm 23.62/600 23.62/600 23.62/600 25.59/650 29.53/750 29.53/750 H5 in/mm 26.93/684 27.36/695 27.36/695 31.02/788 35.16/893 34.92/887 Ød in/mm 11.10/282 11.10/282 11.10/282 11.10/282 11.10/282 11.10/282 Butt weld ends/pipe connection SCH 10S SCH 10S SCH 10S SCH 10S SCH 10S SCH 10S Weight without actuator lbs/kg 36.5/16.5 60/27 60/27 126/57 216/98 280/127 Table 5.1: Type 3248 Angle Valve in stainless steel version, Class 600 (Fig. 7) L in/mm 3.86/98 5.24/133 5.24/133 6.26/159 7.24/184 9.29/236 H1 in/mm 31.42/798 31.42/798 31.42/798 31.32/795.5 37.13/943 47.64/1210 H4 in/mm 15.75/400 15.75/400 15.75/400 15.75/400 16.69/500 21.65/550 H5 in/mm 20.08/510 20.28/515 20.28/515 19.61/498 25.39/645 25.55/649 Ød in/mm 11.10/282 11.10/282 11.10/282 11.10/282 11.10/282 11.10/282 Butt weld ends/pipe connection SCH 40S SCH 40S SCH 40S SCH 40S SCH 40S SCH 40S Weight without actuator lbs/kg 40/18 68.5/31 68.5/31 135/61 236/107 410/186 6 T 8093-1 EN
Table 6.1: Dimensions and weights for Types 3271 and 3277 Pneumatic Actuators Actuator in² cm² 27.13 175 37.2 240 54.25 350 55.03 355 108.5 700 116.25 750 155 1000 217 1400-60 217 1400-120 Diaphragm ØD in/mm 8.46/215 9.45/240 11.02/280 11.02/280 15.35/390 15.35/390 18.19/462 20.87/530 21.02/534 H in/mm 3.07/78 2.56/65 3.23/82 4.80/122 7.87/200 8.03/204 14.06/357 11.3/287 19.29/490 Max. travel in/mm 0.59/15 1.18/30 2.36/60 4.72/120 H3 Type 3271 in/mm 4.33/110 7.48/190 24.02/610 25.59/650 Type 3277 in/mm 4.33/110 7.48/190 Weight Type 3271 lbs/kg 13/6 11/5 18/8 33/15 49/22 79/36 176/80 154/70 386/175 Type 3277 lbs/kg 22/10 20/9 26/12 42/19 57/26 88/40 700 cm² and larger including lifting ring Table 6.2: Valve/actuator assignment for Class 150/300 Valve size Stem diameter Actuator NPS 1 to 2 0.39 in (10 mm) 175 to 750 cm² NPS 3 0.63 in (16 mm) 350 to 750 cm² NPS 4 to 6 0.63 in (16 mm) 350 to 1400-60 cm² Table 6.3: Valve/actuator assignment for Class 600 Valve size Stem diameter Actuator NPS ½ to 1 0.47 in (12 mm) 175 to 750 cm² NPS 1½ to 3 0.63 in (16 mm) 350 to 1400-60 cm² NPS 4 0.63 in (16 mm) 350 to 1400-120 cm² NPS 6 1.58 in (40 mm) 1000 to 1400-120 cm² T 8093-1 EN 7
The following specifications are required on ordering: Type 3248 Valve Globe or angle valve Valve size NPS... Pressure rating Class... Flow coefficient C V Characteristic Equal percentage or linear Body material According to Table 2 End connections Welding ends according to Table 1 Welding-neck ends on request Pipe dimensions Height Cover plate Pneumatic actuator Type 3271 or Type 3277 Actuator diaphragm area cm² Bench range... bar or psi Fail-safe position Fail-close or fail-open Specifications subject to change without notice SAMSON AG MESS- UND REGELTECHNIK Weismüllerstraße 3 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 Fax: +49 69 4009-1507 samson@samson.de www.samson.de T 8093-1 EN 2014-07-29 English