Pneumatic Butterfly Valve Pfeiffer Type BR 14b/AT

Pneumatic Butterfly ValvePfeiffer Type BR 14b/ATApplicationTight closing, double eccentric butterfly valve for process engineering and plants with industrial requirementsNominal sizeDN 80 to DN 400 3” to 16”Nominal pressurePN 10 to 40 ANSI Class 150 and 300Temperatures 10 C to 400 C 14 F to 752 FDouble eccentric Type BR 14b Butterfly Valve with Single-acting Pfeiffer AT Type SRP Rotary Actuator.Valve body material Steel or Stainless steelBody style Wafer type Lug type (tapped holes)Sealing Soft sealing or Metal sealingFurther features Low breakaway torque and low amount of wear due to thedouble eccentric bearing design of the shaft Disc can be replaced without having to remove the shaft TA-Luft (German clean air act) equivalent certificationThe control valves can be equipped with various accessories:positioners, solenoid valves and other components according toVDI/VDE 3845.Fig. 1 Type BR 14b/AT Butterfly ValveVersionsStandard version (Fig.1) with single acting Pfeiffer AT Type SRPRotary Actuator (see Data Sheet T 9929 EN) with– Type BR 14 Disc with sealing ring made of PTFE with 20 %glass for temperatures from 10 C to 200 C (14 F to392 F), nominal sizes DN 80 to DN 400 or– Type BR 14 Disc with metal sealing ring for temperaturesfrom 10 C to 250 C (14 F to 482 F), nominal sizesDN 80 to DN 400Further versions– DN 500 and DN 600 on request– Facing with groove (only with series 16 and 25 of EN 558),– Adjustable packing– Double packing– Primary seal with O-ring– For high temperatures ( 400 C)– For cryogenic applications ( 196 C)– Special materials– Double acting Pfeiffer AT Type DAP Rotary ActuatorFig. 2 Type BR 14b Butterfly Valve with lever––––Single acting Type BR 30 Rotary ActuatorElectric actuatorLever with locking plate up to DN 150 (Fig. 2)Manual gearEdition April 2000Data SheetT 9924 EN

Principle of operationThe process medium can flow through the butterfly valve ineither direction. The direction of flow "A" (see Fig. 3) is recommended as less torque is required. The position of the butterflydisc (3) determines the flow across the free area between discand body (1).Butterfly valves are sealed between the disc and seat. Thecompression force of the sealing ring (4) on the disc determinesboth the permissible differential pressure p and the breakawaytorque when the disc opens or closes. The double eccentricbearing design causes the disc on opening or closing to remainin contact with the seat only over a very small angle of rotation.This reduces wear and increases the service life of the valve.10495ABFail-safe positionAttached to the AT Type SRP Rotary Actuator, the butterfly valvehas two fail-safe positions which become effective when thepiston is relieved of pressure as well as when the supply air fails:2Valve CLOSED without supply air,the butterfly valve closes when the supply air fails.Valve OPEN without supply air,the butterfly valve opens when the supply air fails.123431BodyShaftDiscSealing ring5 Mounting ring9 V-ring packing10 Belleville spring washersFig. 3 Sectional diagram of Type BR 14b, lug typep25(bar)2015105t0-10 050100150250200300 ( C)Fig. 4 p/t diagram, version with soft sealingp(bar)454035PN 40/K3302520PN 25/K115HT105t0-50050100 150 200250 300350 400 450 ( C)Fig. 5 p/t diagram, version with metal sealing2T 9924 EN

Table 1 Technical dataDN 80 to 400 3” to 16”Nominal sizePN 10 to PN 40 ANSI Class 150 and 300Nominal pressureWafer or lug typeBody styleSoft sealingSealing ringMetal sealing50 : 1RangeabilityFace to face dimensionsDINDIN 3202 K1/EN 558-1 Series 20(For PN 10 to 40, DIN 3202 K2/EN 558 Series 25 is possible)ANSIClass 150 with DIN 3202 K1 Class 300 with DIN 3202 K3/EN 558-2 Series 16See pressure-temperature diagramPerm. operating pressuresTemperature range 1) C 10 to 220 10 to 250 F14 to 42814 to 482V (VI on request)IV (V on request)Leakage classacc. to IEC 534 Part 41)Version for high or low temperatures available on requestTable 2 Materials (WN Material Number acc. to DIN)DINVersionANSIWN 1.4408 WN 1.0619BodyA 351 CF8M A 216 WCBWN 1.4408DiscShaftWN 1.4462 WN 1.4542Mounting ringWN 1.4408 WN 1.4571WN 1.4571Packing flangePTFE with 25 % glass PTFE with 40 % carbon to prevent electrostatic dischargeSoft sealingSeal ringNickelMetal sealingSpacerPTFE with glassPackingLive-loaded PTFE V-ring packing Belleville spring washers WN 1.8159, Delta Tone coatedTerms for control valve sizing and noise level calculationTable 3a Kvs valuesNominal sizeOpening anglemmin10 20 30 40 50 60 70 80 90 100Table 3b Cv valuesNominal sizesOpening anglemmin10 20 30 40 50 60 70 80 90 947137Table 3c Terms for noise level calculationOp. angles10 20 30 40 50 60 70 80 90 50.130.120.113T 9924 EN

Permissible differential pressures for Type BR 14b Butterfly Valve with Type SRP Rotary ActuatorTable 4a Version with soft sealing, applicable for both fail-safe positions Pressures in barMax. perm. supply pressure with shaft ofNominal ��12”16”Type SRPActuatorSprings n Requiredsignalpressure2202/3150WN 1.4462Perm. differentialpressure 1) forCLOSED position withdirection of flow "A"WN 1.4542 20 C 68 F 200 C 392 F 20 C 68 F 200 C 392 FWaterDry 66667.05.0The permissible differential pressure corresponds to the operating pressure.T 9924 EN

Permissible differential pressures for Type BR 14b Butterfly Valve with Type SRP Rotary ActuatorTable 4b Version with metal sealing, applicable for both fail-safe positions Pressures in barMax. perm. supply pressure with shaft ofNominal 2”40016”Type SRPActuatorSpringsn Requiredsignalpressure6002/3450WN 1.4462Perm. differentialpressure1) for CLOSEDposition with direction offlow "A"WN 1.4542 20 C 68 F 200 C 392 F 20 C 68 F 200 C 392 FWaterDry 636.029.06002/32.54.63.46619.015.0600445.1 6635.028.04505/65.56 6635.028.012002/32.54.53.36613.010.01200445.1 6624.020.09005/65.56 6624.020.020002/32.54.13.16610.08.02000444.7 6620.016.012005/65.565.96616.012.0On requestThe permissible differential pressure corresponds to the operating pressure.T 9924 EN

Table 5 Permissible shaft and closing torquesThe required torques stated are average values which were measured with water at 20 C with the corresponding differentialpressures. Operating temperature, process medium and long operating times may affect the torque considerably.The closing torque increases by 20 % when dry gas is used. Torque for the direction of flow "B" can be obtained on request.Perm. shaft torque with shaft ofNominal sizeWN 1.4462Required torque in Nm with closing pressure in direction of flow "A"WN 1.4542PTFE seal ringmmin 20 C 68 F 250 C 482 F 20 C 68 F 250 C 482 F3.5 bar10 barMetal seal ring16 bar5 20125010”116978526542260101344 30012”2373159153874584158538 40016”479632151089092653281114 10 bar20 bar40 barOn requestTable 6 Dimensions in mm and /12”400/16”PN 10 to 40Cl 150DN/in465256606878102Class 23151176205299326378481Nominal sizeLWafer typeLug 160215272PN 10160180240295350400515PN 16160180240295355410525PN 25160190250310370430550 -K Lug typePN 40160190250320385450585Class 150152.4190.5241.3298.5362431.8539.8Class 300168.1200.1269.7330.2387.3450.8571.5 -K Wafer type 1)FlangeSW1)6 See lug typeDIN 3337Width across flatsWeightOn requestapprox. 34164With through boresT 9924 EN

D1FSWVKTSquareendLB1A1CDKD2LHA2CB2Fig. 6 Dimensional drawing for wafer and lug body styleTable 7 Type SRP Rotary Actuator Dimensions in mm and 152172187204222262330Connecting flange DIN 3337F07F10F10F12F12F14F14F16F16Square end1722222727363646466.5101318.524324665103Rotary ActuatorWeightType SRPApprox. kg5000OnrequestTable 8 Mounting kit acc. to DIN/ISO 5211 for Type SRP Rotary Actuator Dimensions in 2F14F14F14F16F16mm608090120T 9924 EN

Following details are required on ordering:Nominal sizeNominal pressureBody materialDiscDirection of flowActuatorFail-safe positionSupply airOperating rangeOperating pressureTemperature of mediumMediumDN .PN .Acc. to Table 2Metal sealing orsoft sealing"A", standard forward flow forthrottling service or"B", reversed flow forshut-off serviceType SRP .Valve OPEN orCLOSED. barNumber of springs. bar. CDry or lubricatingSpecifications subject to change without notice.SAMSON AG MESS- UND REGELTECHNIKWeismüllerstraße 3 D - 60314 Frankfurt am MainTelefon (0 69) 4 00 90 Telefax (0 69) 4 00 95 07Internet: http://www.samson.deT 9924 EN

Face to face dimensions DIN DIN 3202 K1/EN 558-1 Series 20 (For PN 10 to 40, DIN 3202 K2/EN 558 Series 25 is possible) ANSI Class 150 with DIN 3202 K1 Class 300 with DIN 3202 K3/EN 558-2 Series 16 Perm. operating pressures See pressure-temperature diagram Temperature range 1) C 10 to 220 10 to 250 F 14 to 428 14 to 482 Leakage class