Circulation pumps BFP-ATEX-T3/T F ATEX - range of use: to zone 1 and zone 1 T3 to zone 1 and zone 1 T Low noise emission High vol. efficiency Optimum suction Gerotor principle Resistant to contamination Page 1/ Bühler Technologies GmbH D - Ratingen, Harkortstr. 9 Tel.: + 9 () 1 / 99- Fax: + 9 () 1 / 99- Internet: www.buehler-technologies.com e-mail: fluidcontrol@buehler-technologies.com
Why a gerotor? Numerous applications in hydraulic and lubrication systems just require the circulation of the fluid. In such cases low noise emissions and low pressure ripples are more important than highly efficient transmission of energy. The gerotor is the ideal principle for such applications. The displacement mechanism consists of the inner and the outer rotor. The number of teeth of the inner rotor is always one less then the outer rotor. The rotation of the gerotor generates chambers of changing volumes between the inner and outer rotor. The variation of the volume follows a sinus curve with low amplitude resulting in a proportional flow with very low pressure ripples. F33X The relation between number of teeth, diameter and width of the gerotor has been chosen with the target for a very compact design featuring small physical dimensions, low weight and minimal loss in efficiency. The low differential of revolutions between the inner and outer rotor provides low vibration and long life. The internal design of the pump head reduces the loss of pressure and ensures good suction performance. Why complete pump units? Each additional component increases the physical volume of a system and results in higher space consumption and cost. Therefore the main target for the BFP-series was set to provide a compact solution. With the models BFP 5 up to the gerotor is directly driven by the motor shaft. The larger pumps BFP and are driven with a special coupling where the motor shaft is integrated. This concept results in additional benefits like good cooling and lubrication. ATEX marking Our devices are suitable for the following hazardeous areas: Zone 1 (gas) and Zone 1 (dust) as well as Zone (gas) and Zone (dust) Type of protection c = protection by constructional safety k = protection by liquid immersion Explosion group IIC (includes IIA + IIB) Temperature class T3/T Ex marking (maximum configuration) Category (for Zone 1) Type of protection Gas-temperature class Category (for Zone 1) Type of protection Gas-temperature class II GD ck IIC T3 T15 C II GD ck IIC T T C Device group Atmosphere G = Gas D = Dust Gas- Explosion group max. surface temperature in dust-loaded atmosphere Device group Atmosphere G = Gas D = Dust Gas- Explosion group max. surface temperature in dust-loaded atmosphere Page /
General data Pump bodyanodised and impregnated cast aluminum Gerotor sintered steel Operating fluids mineral oil according to DIN 515 Fluid temperature max. C Sealing Perbunan (NBR) on request: Viton (FPM) Ambient temperature -15 C to + C max. allowed operating pressure 15 bar Electric motors Voltage 3/ V, 5 Hz ±5% 77/ V, Hz ±5% Protection class IP 5 Design three-phase asynchronous squirrel-cage induction motor, totally enclosed fan cooled (TEFC) The motors comply with the standards EN 79-, EN 79-7, EN 11-, EN 11-1 Insulation Class F Finishing RAL All pumps are delivered with cable gland in the terminal box of the motor. Selection of pumps: Select the pump model by selecting the required motor power with respect to the viscosity of the oil used. The stated motor power refers to the maximum oil viscosity at maximum working pressure. As an option pump models BFP to BFP can be equipped with an additional internal bypass valve opening at bar. Dimensions are not affected. Installation notes: The pump head can be mounted for all models in rotating steps of to align the connections to the piping layout. Regard the offset of the connection threads to the centerline of the motor. The threads are manufactured according to ISO. The sealing surfaces are machined and suitable for soft sealing. We recommend using thread ends according to ISO 1179-. Note: Regard dimensioning of the suction line. The stated nominal cross-section should not be reduced. A high noise level normally indicates too low cross-section of the suction line. Please take notice of the instructions in the manual. Type code BFP --,75kW-Atex-T3-BPx Temperature class T3/T Atex-marking BFP --,75kW-Atex-T3-BPx Motor power output Poles Volume of pump If the by-pass valve is needed the following codes have to be added: By-pass version BP x By-pass valve By-pass pressure (bar) Not for BFP and BFP Page 3/
Temperature class T3 Temperature class T BFP --,75kW BFP15--,75kW BFP15--1,5kW BFP --,75kW BFP15--,75kW BFP15--1,5kW 3775ATEXT3 371575ATEXT3 371515ATEXT3 3775ATEXT 371575ATEXT 371515ATEXT Motor power,75 kw,75 kw 1,5 kw,75 kw,75 kw 1,5 kw Max. oil viscosity 15 cst cst 15 cst cst ca. 1,7 A ca. 1,7 A ca. 3,3 A Part No. At max. working pressure Number of poles Max. current consumption ca. 3, A ca.,1 A ca.,1 A (V/5Hz) Delivery volume nominal 5, cm³/u 11,7 cm³/u 11,7 cm³/u 5, cm³/u 11,7 cm³/u 11,7 cm³/u at 5/ Hz /1 l/min 1/ l/min 1/ l/min /1 l/min 1/ l/min 1/ l/min Connection suction side G3//DN G1 1/-DN3 G1 1/-DN3 G3//DN G1 1/-DN3 G1 1/-DN3 Connection pressure side G1/-DN1 5 db(a) 59 db(a) 59 db(a) 5 db(a) 59 db(a) 59 db(a) 1, kg 1, kg 1, kg 15 kg 15 kg 1,7 kg A 9,5 9,5 1,5 1,5 1,5 19,5 B 317 3 C 5 5 19,5 D 7 7 7 7 E 71 71 F G 7 7 7 7 7 H J 157 157 K 77 77 L M xø9 xø1 xø1 xø1 Suction pressure for all models temporarily up to -, bar Acoustic power acc. to ISO 37 Weight G1/-DN1 -, bar Dimensions (mm) xø1 Flow rate BFP / BFP 15 1 l/min 1 1 1 BFP 15--,75 kw BFP --,75 kw Page / bar 1
Temperature class T3 BFP 3--,75kW Part No. 37375ATEXT3 Motor power,75kw Max. oil viscosity cst At max. working pressure bar Temperature class T BFP3--1,5kW 37315ATEXT3 BFP--1,5kW 3715ATEXT3 1,5 kw cst 1,5kW 7cSt BFP 3--,75kW cst BFP3--1,5kW 37315ATEXT 1,5 kw cst BFP--1,5kW 3715ATEXT 1,5kW 7cSt bar ca. 1,7 A ca. 1,7 A ca. 3,3 A, cm³/u 9/35 l/min 3, cm³/u /5 l/min 37375ATEXT,75kW Number of poles Max. current consumption ca.,1 A ca. 3, A, cm³/u 9/35 l/min, cm³/u 9/35 l/min 1 db(a) 1 db(a) db(a) 1 db(a) 1 db(a) db(a) 11, kg 1, kg 17, kg 1, kg 1, kg, kg 95 91 11 11,5 117,5 315 35 95 1 B 3 37 C 5 5 77 D 7 7 7 E 7 F G 157 H 77 xø9 xø1 xø1 xø1 ca. 3, A (V/5Hz) Delivery volume nominal at 5/ Hz 3, cm³/u, cm³/u /5 l/min 9/35 l/min G1 1/-DN3 -, bar Connection suction side Connection pressure side Suction pressure for all models temporarily up to -, bar Acoustic power acc. to ISO 37 Weight Dimensions (mm) A J K Flow rate BFP 3/ BFP 5 l/min BFP --1,5 kw BFP 3--1,5 kw BFP 3--,75 kw 35 3 5 Page 5/ bar 1
Temperature class T3 Part No. Temperature class T BFP --, kw BFP --3kW BFP --, kw BFP --3kW 37ATEXT3 373ATEXT3 37ATEXT 373ATEXT Motor power, kw 3 kw, kw 3 kw Max. oil viscosity cst cst ca.,5 A ca., A At max. working pressure Number of poles ca.,9 A Max. current consumption (V/5Hz) ca., A at 5/ Hz Connection suction side, cm³/u 5/7 l/min G1 1/-DN Connection pressure side G1 1/-DN3 Delivery volume nominal* Suction pressure -, bar for all models temporarily up to -, bar db(a) Acoustic power acc. to ISO 37 3, kg 3, kg kg 31 kg A 179 B 55 75 C 11 D E 19 F 11 G 1 H J 71 3 K Weight Dimensions (mm) 1 Flow rate BFP l/min 59 BFP --3 kw BFP --, kw 57 55 Page / 53 barbar
Temperature class T3 Part No. Temperature class T BFP --, kw BFP --3kW BFP --, kw BFP --3kW 37ATEXT3 373ATEXT3 37ATEXT 373ATEXT Motor power, kw 3 kw, kw 3 kw Max. oil viscosity cst cst ca., A at 5/ Hz Connection suction side ca.,5 A 1, cm³/u /15 l/min G1 1/-DN Connection pressure side G1 1/-DN3 At max. working pressure Number of poles Max. current consumption (V/5Hz) ca.,9 A ca., A Delivery volume nominal Suction pressure -, bar for all models temporarily up to -, bar 5 db(a) Acoustic power acc. to ISO 37, kg, kg 7,7 kg 3,7 kg A 1,5 1,5 1,5 191,5 B 3 3 51 C 11 D E 19 F 11 G 1 H J 71 3 K Weight Dimensions (mm) Flow rate BFP l/min 9 BFP --3 kw BFP --, kw 3 Page 7/ bar
The series BFP is a product designed by BÜHLER company The company BÜHLER Technologies GmbH, Ratingen was founded in 9. BÜHLER s corporate philosophy is to offer products and solutions representative of the state of the art. BÜHLER also specialises in producing level and temperature measuring equipment, particularly for the fluid power industry. The products Our commitment to customers has given rise to a production program which comprises specialized products for fluid technology. Although these products were initially developed entirely as specials many of them have now become industry standards. Bühler quality Bühler has achieved accreditation from Lloyd s register to be in compliance with ISO 1 and therefore consider it our obligation to offer our customers not only excellent products, but also the best service possible. Page / we reserve the right to amend specification