Series 250 Type and Type Pneumatic Control Valves Type 3251 Globe Valve

Transcription

1 Series 250 Type nd Type Pneumtic Control Vlves Type 3251 Globe Vlve DIN version Appliction Control vlve for process engineering pplictions with high industril requirements Nominl size DN 15 to 500 Nominl pressure PN 16 to 400 Tempertures 196 to +550 C Type 3251 Globe Vlve operted with Type 3271 Pneumtic Actutor (Type Control Vlve) Type 3277 Pneumtic Actutor (Type Control Vlve) for integrl positioner ttchment Vlve body mde of Cst steel Cst stinless steel, high-temperture cst steel or cst cold-resisting steel Specil mterils Low-noise vlve plug Metl sel Soft sel up to PN 40 High-performnce metl sel Blnced to hndle high differentil pressures The control vlves, designed ccording to the modulr ssembly principle, cn be equipped with vrious ccessories: Positioners, limit switches, solenoid vlves nd other ccessories ccording to IEC nd NAMUR recommendtion (see Informtion Sheet u T 8350 for more detils). Versions Stndrd version with PTFE pcking for tempertures from 10 to +220 C or with djustble high-temperture pcking for 10 to +350 C, nominl size DN 15 to 500, nominl pressure PN 16 to 400 (see Tble 1) Type (Fig. 1) Type 3251 Vlve nd Type 3271 Actutor with 350 to 2800 cm² ctutor re (see u T , u T , nd u T ) Type Type 3251 Vlve nd Type 3277 Actutor with 350 to 750v2 cm² ctutor re, for integrl positioner ttchment (u T ) Further versions Welding ends or welding-neck ends According to DIN EN Flow divider or AC-1/AC-2/AC-3 Trim for noise reduction (see u T 8081, u T 8082, nd u T 8083) Vlve plug with pressure blncing See Tble 3 Perforted plug See Dt Sheet u T 8086 Fig. 1: Type Pneumtic Control Vlve with Type 3271 Actutor Insulting section or bellows sel See Technicl dt Heting jcket Detils on request Additionl hndwheel See Dt Sheet u T ANSI version NPS ½ to 20, Clss 150 to 2500, see Dt Sheet u T 8052 Type 3251 Vlve with Type 3273 Hnd-operted Actutor For vlves with mx. 30 mm rted trvel nd side-mounted hndwheel for trvel > 30 mm, see Dt Sheet u T 8312 Type Electric Control Vlve Detils on request Associted Informtion Sheet T 8000-x Edition December 2017 Dt Sheet T 8051 EN

2 Principle of opertion The medium flows through the vlve in the direction indicted by the rrow. The vlve plug determines the cross-sectionl re of flow. The version with bellows sel (Fig. 4) is fitted with test connection to monitor the stinless steel bellows. The vlves cn be equipped with flow divider (u T 8081) for noise reduction. Pressure blncing must be used when high pressures or differentil pressures ct on the plug (Fig. 3). Fil-sfe ction Depending on how the springs re rrnged in the pneumtic ctutor (see Dt Sheets u T , T , nd T ), the vlve hs two different fil-sfe positions effective upon ir supply filure. Actutor stem extends (fil-close) The vlve is closed upon ir supply filure. Fig. 3: Type 3251 Vlve with welding ends nd blnced plug Actutor stem retrcts (fil-open) The vlve is opened upon ir supply filure. Differentil pressures The permissible differentil pressures cn be found in the Informtion Sheet u T Figs. 2 to 4 show configurtion exmples. Fig. 4: Type 3251 Vlve with flow divider ST 1 nd dditionl bellows sel with test connection Fig. 2: Type Control Vlve with Type 3271 Pneumtic Actutor 2 T 8051 EN

3 Tble 1: Technicl dt for Type 3251 Mteril Cst steel Cst steel Cst stinless steel Nominl size 1) DN 15 to to to to to to 300 Nominl pressure 1) PN 16 to 400 Up to PN to 400 Up to PN 160 Type of end connections Flnges All DIN EN versions Set/plug sel Welding ends DIN EN to 400 Metl sel Soft sel High-performnce metl sel Chrcteristic Equl percentge Liner Quick opening (u T ) Rngebility 50:1 Complince Temperture rnges in C Permissible operting pressures cc. to pressure-temperture digrms (see Informtion Sheet ut ) Body without insulting section 10 to 220 C Up to 350 C with high-temperture pcking Body with Insulting section or 10 to to to +550 bellows sel Vlve plug 2) Stndrd Metl sel 196 to +550 Soft sel 196 to +220 Blnced with PTFE 50 to ) Blnced with grphite ring 220 to 500 4) Lekge clss ccording to IEC Vlve plug Stndrd Metl sel Stndrd: IV High-performnce metl sel: V Soft sel VI Blnced, metl sel With PTFE (stndrd): IV High-performnce metl sel: V With grphite ring: IV 1) DN 400: PN 16 to 63 DN 500: PN 16 to 40 2) ly in combintion with suitble body mteril 3) Lower tempertures on request 4) Higher tempertures on request Tble 2: Mterils (EN mteril number) Up to PN 160 Stndrd version Body 1) Cst steel Cst steel Cst stinless steel Vlve bonnet / / / Set nd plug 2) Metl sel / / Sel ring for Soft sel PTFE with 15 % glss fiber Pressure blncing PTFE with crbon Grphite Guide bushings Pcking 3) Body gsket V-ring pcking: PTFE with crbon; spring: High-temperture pcking Grphite sel on metl core Insulting section / / / Metl bellows sel Intermedite piece / / / Metl bellows ) Heting jcket ) Further mterils (e.g. for high or low-temperture pplictions) s well s specil mterils for pplictions with se wter: , duplex , nickel-bsed lloy: , see pressure-temperture digrms (Informtion Sheet u T ) 2) Sets nd metl-seted plug lso with Stellite fcing or plug mde of solid Stellite vilble (up to mx. K VS 630) 3) Other pckings on request (u T ) 4) Other bellows mterils on request T 8051 EN 3

4 Tble 3: Avilble K VS coefficients Versions highlighted in gry lso vilble with blnced plug Terms for control vlve sizing ccording to IEC 60534, Prts 2-1 nd 2-2: F L = 0.95, X T = 0.75 Tble 3.1: Overview with flow divider ST 1 (K VS 1), ST 2 (K VS 2) nd ST 3 (K VS 3) K VS K VS K VS K VS Set Ø [mm] Rted trvel [mm] Tble 3.2: Versions without flow divider PN 16 to 400 K VS DN ) 250 1) 300 1) ) Pressure blncing only for PN 63 Tble 3.3: Versions with flow divider ST 1 PN 16 to 160 1) K VS DN ) 250 2) 300 2) ) PN 250 to 400 with flow divider ST 1 nd pressure blncing on request 2) Pressure blncing only for PN 63 4 T 8051 EN

5 Tble 3.1: Overview with flow divider ST 1 (K VS 1), ST 2 (K VS 2) or ST 3 (K VS 3) K VS K VS K VS K VS Set Ø [mm] Rted trvel [mm] Tble 3.4: Versions with flow divider ST 2 PN 16 to 160 1) K VS DN ) 250 2) 300 2) ) PN 250 to 400 with flow divider ST 2 nd pressure blncing on request 2) Pressure blncing only for PN 63 Tble 3.5: Versions with flow divider ST 3 PN 16 to 160 1) K VS DN 50 3) 3) 3) 80 3) 3) 3) 3) 3) 100 3) ) 250 2) 300 2) ) PN 250 to 400 with flow divider ST 3 nd pressure blncing on request 2) Pressure blncing only for PN 63 3) Version not possible in combintion with bellows sel T 8051 EN 5

6 Tble 4: Dimensions in mm for Type nd Type in stndrd version Tble 4.1: Type 3251 Vlve Fce-to-fce dimensions ccording to DIN EN 558 Vlve DN PN 10 to Length L PN 63 to ) (flnges nd PN welding ends) PN PN ) 308 1) 378 1) 444 1) 570 1) 666 1) 908 1) PN 10 to Height H4 PN 63 to ) PN 250 to cm² v2 cm² cm² v2 cm² H8 for ctutor 1000 cm² request cm² request cm² ) cm² ) x2800 cm² ) PN 10 to H2 (DN 100 nd lrger with foot) PN 63 to PN PN PN ) Fce-to-fce dimensions cc. to SAMSON stndrd 2) H8 = 650 mm with 250 mm set bore 3) PN 63 Tble 4.2: Type 3271 nd Type 3277 Pneumtic Actutors 3) Actutor re cm² v v x 2800 Diphrgm ØD mm H 1) mm H3 2) mm H5 Type 3277 mm Thred Type 3271 M30 x 1.5 M60 x 1.5 M100 x 2 Type 3277 M30 x 1.5 Type 3271 G 3 /8 ( 3 /8 NPT) G 3 /8 ( 3 /8 NPT) G 3 /8 ( 3 /8 NPT) G 3 /8 ( 3 /8 NPT) G ¾ (¾ NPT) G ¾ (¾ NPT) G 1 (1 NPT) G 1 (1 NPT) G 1 (1 NPT) 2 Type 3277 G 3 /8 G 3 /8 G 3 /8 G 3 /8 1) Height including lifting eyelet or femle thred nd eyebolt ccording to DIN 580. Height of the swivel lifting hook my differ. Actutors up to 350v2 cm² without lifting eyelet or femle thred 2) Minimum clernce required to remove the ctutor 6 T 8051 EN

7 Dimensionl drwings Type 3271 Pneumtic Actutor Type 3271 Pneumtic Actutor Type 3277 Pneumtic Actutor H3 H ØD H3 H ØD H3 H H5 ØD 2 H8 H8 H8 H4 H4 H4 H2 H2 H2 L L L Type up to DN 80 Type in DN 100 nd lrger Type b H8 d H4 Type 3251 with heting jcket Dimensions on request d L c Type 3251 with bellows sel or insulting section T 8051 EN 7

8 Tble 5: Weights for Type nd Type in stndrd version Tble 5.1: Type 3251 Vlve Vlve DN Vlve without ctutor (pprox. kg) 1) PN 63 PN 16 to PN 63 to ) PN 250 request PN 320 request PN 400 request Tble 5.2: Type 3271 nd Type 3277 Pneumtic Actutors Actutor cm² v v x 2800 Type 3271 (pprox. kg) Type 3277 (pprox. kg) Without hndwheel With hndwheel Without hndwheel With hndwheel 1) Side-mounted hndwheel up to 80 mm trvel 2) Side-mounted hndwheel bove 80 mm trvel request ) /425 2) 575 1) /700 2) request Tble 6: Dimensions nd weights for the stndrd version of Type 3251 with insulting section Without ctutor Nominl size DN PN 10 to ) request Height H4 PN 250 to PN 16 to request Weight (kg) without ctutor for 1) Up to PN 63 2) Up to PN 40 PN 63 to PN 250 request PN 320 request PN 400 request request 1) 8 T 8051 EN

9 Tble 7: Dimensions nd weights for the stndrd version of Type 3251 with bellows sel Without ctutor Nominl size DN Height H4 (mm) Weight without ctutor (kg) 1) PN 63 PN 10 to 40 PN 63 to 100 PN 63 to 160 PN 250 to 320 PN 400 PN 10 to 40 Trvel 15 to to request 1) 1) request PN 63 to PN 250 to 320 request PN 400 request 1) T 8051 EN 9

10 Selection nd sizing of the control vlve Clculte K V coefficient ccording to IEC Select nominl size DN nd K VS coefficient from Tble 3. Select the ctutor nd determine the permissible differentil pressure from the Informtion Sheet u T Select the vlve body mteril from Tble 1 nd Tble 2 s well s from the pressure-temperture digrms (see Informtion Sheet u T ). Select ccessories from Tble 1 nd Tble 2. Order specifictions Nominl size DN Nominl pressure PN Body mteril According to Tble 2 Bonnet Stndrd bonnet, insulting section or bellows sel Type of end Flnges/welding ends connections Plug Stndrd or blnced Soft sel, metl sel or high-performnce metl sel Chrcteristic Equl percentge, liner or quick opening Actutor Type 3271 or Type 3277 see Dt Sheets u T , T , nd T ) Fil-sfe position Fil-close or fil-open Process medium Density in kg/m³ nd temperture in C Flow rte kg/h or m³/h Pressure p 1 nd p 2 in br (bsolute pressure p bs ), with minimum, norml nd mximum flow rte Vlve ccessories Positioner nd/or limit switch Specifictions subject to chnge without notice SAMSON AG MESS- UND REGELTECHNIK Weismüllerstrße Frnkfurt m Min, Germny Phone: Fx: smson@smson.de T 8051 EN English