TURBO PRESSURE BLOWERS

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1 Twin City Fan INDUSTRIAL PROCESS AND COMMERCIAL VENTILATION SYSTEMS TURBO PRESSURE BLOWERS TBA TBR CATALOG 10 APRIL 13

2 TURBO PRESSURE BLOWERS Models TBA TBR TBR Arrangement 8 Model TBA and TBR fans from Twin City Fan & Blower are constant pressure, variable volume blowers. Turbo pressure blowers are generally used in applications for relatively low volumes and high pressures. They are used primarily for handling air, gas, and fumes relatively free of dust and materials. Twin City Fan & Blower s TBA and TBR turbo blowers provide uniform pressure through the operating range. Stable operation can be maintained from free delivery to shutoff by throttling at the discharge. The design volume of a particular fan can be varied by selecting one of the various wheel options that will fit within the housing. Turbo blowers are most often sold as Arrangement 4 and Arrangement 8 direct drive packages. Typical Applications Glass blowing Air compression Furnace blowers Chemical processing Chip blowing Drying applications Combustion air Cooling Gas boosting Process systems Design Features Designed for continuous duty in high pressure applications Stable operation from free delivery to shutoff when dampered at the fan discharge with blast gate Uniform pressures throughout the operating range Compact, efficient low-cost arrangement TBR Arrangement 8 (Drive Side) Twin City Fan Model TBA Wheel: air handling type with backward inclined blades for high-efficiency Capable of handling relatively high volumes and pressures Airflow to 29,000 CFM Pressures from 6" SP to 70" SP Model TBR Wheel: radial bladed with backplate and shroud for low volumes and high pressure Airflow to 10,000 CFM Pressures from 6" SP to 100" SP 2 TWIN CITY FAN - CATALOG 10

3 Arrangement 4 Arrangement 4 is the standard arrangement, with the wheel mounted directly on the motor shaft. The fan performance is dependent upon the RPM of the motor, which is usually a 3500 RPM motor. This drive arrangement is the most compact and has minimum maintenance and service requirements. Standard Arrangement 4 fans are suitable to 180 F operating temperature. ARRANGEMENTS Arrangement 8 Arrangement 8 is a direct-connect unit, similar to Arrangement 4. The wheel is mounted on a separate fan shaft and is mounted to the fan base with pillow block bearings (minimum L-10,000 hours). The fan shaft is connected to the motor shaft with a flexible coupling. Arrangement 8 blowers offer the ability to remove the motor for service without disturbing the fan assembly. Arrangement 8 units are limited to 300 F. For special arrangements and higher temperature requirements, please consult the factory. V-Belt Drive Arrangements Twin City Fan & Blower s turbo blower has a wide performance range available with direct drive models which should be used whenever possible. All V-belt drive applications should be reviewed by the factory. TBR Arrangement 4 WHEEL DESIGN Wheel Construction All wheels are made with care to insure maximum strength and reliability. Wheels have a self-centering, all steel taper-lock bushing. Lock screw holes are provided for positive convenient wheel removal without special tools. Wheels are statically and dynamically balanced on the most modern electronic equipment. Every blower unit is given a final running mechanical test and trim balance before shipment. TBA (Turbo Pressure Air Handling Blower) The turbo air handling wheel is a more efficient type of wheel and is used for relatively high volumes of air. The wheel is constructed with heavy-gauge, backwardly inclined blades welded to a spun cone and heavy-gauge backplate. The backplate uses a taperlock hub for easy wheel removal and self-centering reinstallation. The TBA wheel is generally suitable for clean air applications. TBR (Turbo Pressure Radial Blade Blower) The turbo radial bladed wheel is designed for lower air volume at high pressures. The radial blades provide stable airflow over a wide range of airflows. The all-welded wheel uses a taperlock hub for easy removal and self-centering reinstallation. The TBR wheel is generally suitable for clean air applications. TBA Turbo Air Handling Wheel TBR Turbo Radial Bladed Wheel 3

4 ACCESSORIES Outlet Tube Adapter With Rubber Sleeve Inlet Filer With Cover Shaft Seal Inlet Filter Shaft Seal Shaft seals are mounted on the drive side of the blower housing. They consist of a ceramic felt element in compression to minimize air leakage. However, they are not of the gas-tight design. Outlet Tube Adapter With Rubber Sleeve This consists of a 4" long steel collar and flange which bolts to the blower discharge. A 6" long, 2-ply molded rubber slip-type connector with two hose clamps connects the adapter to the pipe line and helps to isolate vibration and noise transmission to the rest of the system. The connector is rated for pressures up to 5 psi and 180 F. Inlet Filter Turbo blower wheels are designed for handling clean air only. An inlet filter is recommended when a turbo blower is installed in a dust-laden atmosphere to help keep the wheel clean and free of clogging, loading and erosion. The filter media is ultra synthetic. Filters are sized for a maximum pressure drop of 1" SP. The filter assembly includes a mounting flange drilled to match 5# ASA pattern (thickness of flange is manufacturer standard). The turbo blower is furnished with a flanged inlet for mounting the filter assembly. Inlet & Outlet Silencers For applications requiring reduced noise levels, silencers can be provided. Silencers are aerodynamically and acoustically designed to significantly reduce noise emanating from the blower inlet or outlet while adding only minor resistance to the airflow (maximum pressure drop of 1" H2O SP). These silencers are designed for effective sound attenuation in the 63 to 8,000 Hz frequency range. The silencer is fabricated of a steel outer shell and a perforated inner shell. Silencers include mounting flanges and the turbo blower must have a flanged connection. The flange has a drilling pattern to match 5# ASA flange (thickness is manufacturer standard). Always add a shaft seal when quoting silencer to prevent noise emanating through the gap around the shaft. Inlet & Outlet Silencers Inlet Filter/Silencer Combination Designed to handle both a dirty atmosphere and noise. The filter/silencer is sized for 1 1 2" SP pressure drop. The filter/silencer assembly normally comes with a flange that has a 5# ASA drilling pattern (thickness is manufacturer standard). Fan must be ordered with flanged inlet when ordering filter/silencer unit. 4 TWIN CITY FAN - CATALOG 10

5 ACCESSORIES Flanged Inlet The flanged inlet enables attachment of rigid pipe connections on the blower inlet. The flange has a drilling pattern to match 5# ASA pipe flange. The thickness of the flange is not according to ASA standards. Outlet Blast Gate This wafer type manual lever-operated butterfly valve is used to adjust air delivery and prevent motor overload. Reducing the flow will also reduce the power requirement and prevent motor overload. On Model TBR fans, round outlet transitions are provided to allow direct mounting of the blast gate to the outlet flange. The valve has a bolt hole pattern to match 5# ASA pipe standard. Electric or pneumatic automatic actuators are available as an option upon request. Note: This valve configuration can be utilized as an inlet air control when used with and matched to the correct size blower flanged inlet. Flanged Inlet Outlet Blast Gate Twin City Fan ENGINEERING DATA Model TBA Bare Fan Weights* and Data SIZE BARE FAN NOMINAL NOMINAL WR2 WT. (LBS.) WHEEL WHEEL WT. (LB-FT2) IN ARR. 4 DIA. (IN.) (LBS.) Model TBR Bare Fan Weights* and Data SIZE BARE FAN NOMINAL NOMINAL WR2 WT. (LBS.) WHEEL WHEEL WT. (LB-FT2) IN ARR. 4 DIA. (IN.) (LBS.) R R R R R R R R R R R R R R *Fan Weight Only Arr. 4 does not include motor. 5

6 FAN SELECTION Use the TBR/TBA selection chart below (Figure 1) with desired CFM and static pressure to determine if TBR, TBA, or both can give acceptable selections. Select a fan based on efficiency, first cost and operating point on the fan curve. From the performance tables, select a fan based on CFM and SP (at standard density of lb/ft 3 ) closest to the value specified. When specified performance is at a density different than standard, it must be converted to the equivalent standard conditions before entering the performance tables. Review the fan curve for your selection. Attempt to offer a fan with higher efficiency wherever possible. Example 1 Given: 1460 CFM, 35" SP Model TBR R23Q shows.9 BHP, use 15 HP motor Model TBR R25N shows 17.0 BHP, use 15 HP with 1.15 S.F. or HP motor R23Q is more efficient and should be selected unless operating point of R25N is required by the customer. Example 2 Given: 5000 CFM, " SP Model TBR R29Q shows 4980 CFM and 65.6 BHP Model TBA P5 shows 50 CFM and 47.7 BHP Both selections are usable. The TBA is a better choice based on its higher efficiency. The performance curve for each fan shows the relationship of CFM versus SP and also denotes recommended motor HP. Referring to the curve for Model TBR R-33: CFM SP BHP Motor Selection HP motor (1.0 or 1.15 SF) HP with 1.15 SF or 5 HP HP with 1.15 SF or 5 HP It is normal to use turbo blowers with motors operating into the service factor. Density Ratios For Inlet Suction Conditions If inlet pressure is suction or negative, static pressure required must be corrected by the inlet density ratio. Example: Operating conditions 70 F at sea level. System resistance at fan inlet is ". Density ratio for correcting inlet air density is as follows: (7 ) 7 = Equivalent static pressure to be used for fan selection from standard tables: = 44.36" Actual air density at inlet = x = lb/ft 3 Operation at Other RPMs or Variation of Fan Speed CFM varies with fan speed. Static pressure varies with square of fan speed. Brake horsepower varies with cube of fan speed. Example: Model TBA 1710P7 delivers CFM at 50" at 3500 RPM and 2 BHP. At 2900 RPM (50 Hz speed): CFM = ( ) x = 489 SP = ( ) 2 x 50 = BHP = ( ) 3 x 2 = 1.6 The above formula can be used to select fans for 50 Hz operation as well as for V-belt drive applications. Figure 1. TBR/TBA Selection Chart STATIC PRESSURE (IN. WG) TBR TBR OR TBA TBA BRAKE HORSEPOWER CFM (in 1000s) 0 6 TWIN CITY FAN - CATALOG 10

7 SELECTION CHARTS TBA Static Pressure = 6 706M M S P M S M P M S S S P S P P M M M S S S P S M M S S M Static Pressure = 7 706M M M S P S M P S M S S P S P P M M M S S S P P M S M M P S S S P M M S S M Static Pressure = 8 706S S P M S S P M S P S P M P M M S S S P M P Static Pressure = 8 910M S M P S S S P S P M M M S S S M P M S Static Pressure = 9 706S M P M P S S P M P P M S M S S P M M P S M P S S S P S P M M P M S S S P S M P M M S S M S Static Pressure = P P S S P P M P S M S S M M P P S M P S S S P S Static Pressure = M P M P M S S S P S M M P P M S S M S M P M M S S M Static Pressure = S S P M S P S M M S M P P S M S P S S P S M M P P M S S S P M S M P P M S S M S P M M M M P S S S S M M S M Static Pressure = 806S M P P M M S M P S Static Pressure = 906P M S P S S P S M M P P M S S S P M S M P P M S S M S P M M M M S P M S S P S S S S M M M P S M P Static Pressure = P S M P S P M S S P S P M S M P P M S S S P M S M P M P S S M S P M M M M S P M S S P Static Pressure = 13 P M S S P S S M S M M P S M M S M M P S M P Static Pressure = S M P S P S M S P S M S P M P P M S S S M P S M P M P S S M S M M P M M S P M S S P P M S S P S S M P S M M P P S M M P S M M S M P S M P S

8 SELECTION CHARTS TBA Static Pressure = S P M M P S S M P P M P S S S M P M S P M P S S M S M M P M M S P M S S P P M S S P S S M P S M M P P P S S M M P S M M S M S S P S M P S P Static Pressure = 906P P S M S P P M S P S M S P M S P M S P S M Static Pressure = S M M P M M S P M S S P P S M S S P S M P M S M P P S P S M M S P M M S M S S P P P S S S M P M S P M Static Pressure = P S M S P P S M P S M S M P S P M S P S M S M M M P M S P M S S P P S M S S P S M Static Pressure = P M S M P P S P S M P M S P M M S M S S P P P P S S S M P M S M P M Static Pressure = P S M S S P P S M M P S M P S P M S P S M M S M M P M S P M S S S P P M S S P S M P M M S P P S P S M P M S M P M S Static Pressure = M S S P P P P S S S P M P M S M P S M S Static Pressure = S P M P S M S P P M S S P M M M S M P M S P M S S S P P M S S P S M M P M S P P S P S M M P S M P M S M S S P P P P S S S P M P P M S M P S M S Static Pressure = P Static Pressure = 1006P P S M S P S P M S P M M M S M P M S P M S S S P P M S S M S P M P M S P P S P S M M P S M P M S M S S P P P P S S S P M P P M S M P P S M S P Static Pressure = P M S S P S P M S P M M M S M M P TWIN CITY FAN - CATALOG 10

9 SELECTION CHARTS TBA Static Pressure = 21 S P M S S S S P M P S M S P M M P S P P S P S M M S P M P M S M S S P P P P S S S P M P P M S M P P S M S S P Static Pressure = S S S P P M P M M S M M P S P M S S S S P M P S M M S P M P S P P S P M S Static Pressure = M S M P P M S M S S P P P P S S S P M P P M S M P P S M S S P Static Pressure = S P P M M S M M P S P S M S S S P M P S M M S P M P S P P S M P S M S M P P M M S S S P P P P S S S P M P P M S M P P S M Static Pressure = S P S P Static Pressure = 1106P P M M S M M S P P S M S S S P M M M P S S P M P S P P S M S P M S M P P M M S S S P P P P S S S P M P P M M S P P S M S P S P Static Pressure = M P M S M M S P S P S M S S M P M M P S S P Static Pressure = 25 18M P S P P S M S P M S M P P M M S S S P P P S P S S P M P P M M S P P S M S P S P Static Pressure = M P S M S M S P S P M M S S M M P P S S P M P S P P M S S M P S M M M P P S S S P P P S P S S M P P M Static Pressure = P M S P S P M S P S P Static Pressure = M S P P M S S M M P S P S P M S P P M P S S M P S M M M P P S S S P P P S P S S M P P M P M S P S P M S P S P Static Pressure = S P M S M S M P S P S P M S P P M P M S S P M S

10 SELECTION CHARTS TBA Static Pressure = 1506M M P P S S S P P P S P S S M P P M P M S P S P M S P S P Static Pressure = 29 P M S M S M P S P S P M S P P M M S P S M P S M M P P S S S P P P S P S S M P P M P M S S P P M S P S P Static Pressure = 30 M S S M P S S P M Static Pressure = P S P P M M M S P S P S M M P S P S S P P P S P S S M P M P P M S S P P M S P S P Static Pressure = S M P S S M P P M P S M M P S S P P S M M P S P S S P P P S P S M S P M P P M S S P P M S P S P Static Pressure = 32 P S Static Pressure = S P P P S M M S P S P P S M M P S P S S P P P M S S P S P M P P M S S P P M S P S P Static Pressure = P P M S M S P S S P P M M P S P S S P M P P S S P S P M P P M S S P P M S P S P Static Pressure = P P M M S S S P Static Pressure = P S P M M P S P S P S M P P S S S P P M P P M S S P P M S P S P Static Pressure = P P M S S P P S M P M P S P M S P S P P S S S P P M P P M S S P P M S P S P Static Pressure = 36 S M P P S M P P S P S P S P P S S S P P Static Pressure = M P P M S S P P M S P S P Static Pressure = P P S P P S P S P S S P P S S P P M P P M S S P P M S P S P Static Pressure = P P P P S S P P S S P P S S P M P P P M S S P M P S P S P Static Pressure = 39 P P P S P S S P S P S P M P P P TWIN CITY FAN - CATALOG 10

11 SELECTION CHARTS TBA Static Pressure = M S S M P P S P S P Static Pressure = P P S P S S P S S P P M P P P M S S M P P S Static Pressure = 1706P S P Static Pressure = S P P S S P P M P P P M S M S P P S P S P Static Pressure = 44 P P S P P M Static Pressure = P P M P S M S P P S P S P Static Pressure = P P M S P P M S P P S P S P Static Pressure = P P S Static Pressure = P P S P S P Static Pressure = P P S P P S P S P Static Pressure = P P S S P P S P Static Pressure = S S P P S P Static Pressure = S P P S P Static Pressure = S P S P P Static Pressure = P S P P Static Pressure = P P Static Pressure = P P Static Pressure = P P Static Pressure = P P Twin City Fan 11

12 SELECTION CHARTS TBR Static Pressure = 6 R11Q R11V R11X R11W Static Pressure = 7 R11Q R11V R11X R11W R11Y RQ RV RX Static Pressure = 8 R11Q R11V R11X R13M R11W R11Y RQ RV RX RW R13Q RY R13V Static Pressure = 9 R11V R11X R11W R13M R13N R11Y RQ RV RX RW R13Q RY R13V R13X R13W R14Q R14V R14X Static Pressure = 10 R11W R13M R11Y RQ R13N R14M R13P RV R14N RX RW R13Q RY R13V R13X R13W R14Q R13Y R14V R14X R14W R15Q R14Y Static Pressure = 11 R13M R13N RV R14M R13P RX R14N R13Q RW R14P R15M R15N RY R13V R13X R13W R14Q R13Y R14V Static Pressure = 11 R14X R14W R15Q R14Y R15V R15X RQ R15W Static Pressure = R13M R13N RX R14M R13P R13Q R14N 6 1. RW R15M R14P RY R13V R15N R13X RM R13W R14Q RN R13Y R14V R14X R14W R15Q R14Y R15V R15X RQ R15W R15Y RV RX Static Pressure = 13 R13N R14M RW R13P R14N RY R13V R15M R14P R15N R13X R15P R13W R14Q RM R13Y RN R14V R14X R14W R15Q R14Y R15V R15X RQ R15W RV R15Y RX RW R18Q Static Pressure = 14 R13P R14N R15M R13X R14P R15N R14Q R13W R15P 1 2. RM R13Y RN R14V RP R14X R15Q R14W R14Y Static Pressure = 14 R15V R15X RQ R15W RV R15Y RX RW RY R18Q R18V Static Pressure = 15 R13P R14N R15M R14P R13W R15N R15P R13Y RM R14V RN R14X RP R15Q R14W R14Y R15V R18M R15X RQ R18N R15W RV R15Y RX RW RY R18Q R18V R18X 10.5 Static Pressure = R14P R15N R13Y 5 1. R15P RM R14X RN R15Q R14W RP R14Y R15V R18L R18M RQ R15X R18N R15W RV R15Y RX RW RY R18Q R18V R18X R18W R18Y R21Q Static Pressure = 17 R14P R15N RM R15P RN R14W RP R15V R14Y R18L RQ R18M R15X R15W R18N RV R18P R15Y Static Pressure = 17 RX RW RY R18Q R18V R18X R18W R18Y R21Q Static Pressure = 18 RM R15P RN R15V R14Y RP RQ R15X R18L R18M R15W R18N RV R15Y R18P RX R21M RW RY R18Q R18V R18X R18W R18Y R21Q R21V R21X Static Pressure = 19 R15P RN RP R15X R18L R18M R15W RV R18N R15Y R18P RX R21L RW R21M R21N RY R18Q R18V R18X R18W R18Y 84.2 R21Q R21V R21X 91.8 R21W R23Q Static Pressure = RN RP R15W R18L R18M RV R18N R15Y RX R18P RW R21L R21M RY R21N R18Q R18V R18X 9. R18W R18Y 46.0 R21Q R21V R21X 49.5 R21W R21Y R23Q Static Pressure = 21 RP R18M R18L R15Y R18N RX RW R18P R21L R21M RY R21N R18Q R21P R18V R23M R18X R18W R18Y R21Q R21V R21X 05.1 R21W R21Y R23Q R23V R23X Static Pressure = 22 RP R18M R18L R18N RW R18P R21L R21M RY R18Q R21N R21P R18V R23L 46.1 R18X R23M R18W R23N R21Q R18Y R21V R21X R21W R21Y R23Q R23V R23X R23W R25Q Static Pressure = 23 R18M R18L R18N RW R18P RY R21L R21M R18Q R21N R21P R18V R23L 11.8 R18X R23M R18W R23N R21Q R18Y R21V R21X R21W R21Y R23Q R23V R23X R23W R25Q Static Pressure = R18L R18N RY R18P TWIN CITY FAN - CATALOG 10

13 SELECTION CHARTS TBR Static Pressure = R21L R21M R21N R21P R18V R18X R23L R23M R18W R23N R21Q R18Y R23P R25M R21V R21X R21W R21Y R23Q 77.9 R23V R23X R23W R25Q R23Y R25V Static Pressure = 25 R18N R18P R21L R21M R21N R18V R21P R18X R23L R18W R23M R21Q R23N R18Y R23P R21V.6 R25M 17.4 R21X R21W 19.2 R21Y R23Q.4 R23V 27.8 R23X R23W R25Q R23Y R25V R25X Static Pressure = 26 R18P R21M R21L R18V R21N R21P R18X R23L R18W R23M R21Q R23N R18Y R23P R25L R21V R25M R21X R25N R21W R21Y R23Q R23V R23X R23W R25Q R23Y R25V R25X R25W 47.0 R27Q Static Pressure = 27 R18P R21M R21L R21N R18X Static Pressure = 27 R21P R18W R23L R23M R21Q R18Y R23N 96.5 R23P R21V R25L R25M R21X R25N R21W R21Y R23Q R23V R23X R23W R25Q R23Y R25V R25X R25W R27Q Static Pressure = R18P R21M R21L R21N R21P R18W R21Q R23L R23M R18Y R23N 60.2 R21V R23P R25L R25M 15.4 R21X 04.8 R25N R21W R25P R21Y R23Q R27M 25.0 R23V R23X R23W R25Q R23Y R25V R25X R25W R27Q R25Y R27V Static Pressure = 29 R21L R21N R18W R21P R21Q R23L R23M R18Y R23N R21V R23P R25L R25M R21X 15.2 R21W R25N R21Y R25P R23Q R27L R27M 27.6 R23V R27N R23X R23W 51.4 R25Q R23Y R25V R25X R25W R27Q R25Y R27V R27X Static Pressure = 30 R21L R21N R21P R18Y R23L R23M R23N R21V R23P R25L 14.4 R21X R25M R21W R25N R21Y R25P R23Q R27L R27M R23V R27N R23X R23W R25Q R23Y R25V R25X R25W R27Q R25Y R27V R27X R29Q Static Pressure = 31 R21N R21P R18Y R23L R23M R21V R23N R21X R23P R25L R25M R21W R25N R21Y R25P R23Q R27L R27M R23V R27N R23X R23W R25Q R23Y R25V R25X R25W R27Q R25Y R27V R27X R27W R29Q Static Pressure = 32 R21P R23L R23M R21V R23N R21X R23P R25L R25M R21W R25N R21Y R25P R23Q R27L R27M R23V R27N R23X R23W R27P R29M R25Q R23Y R25V Static Pressure = 32 R25X R25W R27Q R25Y R27V R27X R27W R29Q R29V Static Pressure = 33 R21P R23M R23L R23N R21X R23P R25L R25M R21W R25N R21Y R23Q R25P R27L R27M R23V R27N R23X R23W R27P R29M R25Q R23Y R25V R25X R25W R27Q R25Y R27V R27X R27W R27Y R29Q R29V Static Pressure = 34 R21P R23M R23L R23N R23P R25L R21W R25M R25N R21Y R23Q R25P R27L R27M R23V R27N R23X R23W R29L R27P R25Q R29M R23Y R29N R25V R25X R25W R27Q R25Y 49.9 R27V R27X R27W R27Y R29Q R29V R29X R31Q Static Pressure = 35 R21P R23M R23L R23N R21W R25L 14.6 R23P R25M R23Q Static Pressure = 35 R21Y R25N R25P R27L R27M R23V R27N R23X R23W R29L R25Q R27P R29M R23Y R29N R25V R25X R25W R27Q R25Y R27V R27X R27W R27Y R29Q R29V R29X R29W R31Q Static Pressure = 36 R23L 6 7. R23N R21W R25L R23P R25M R23Q R21Y R25N R25P R27L R23V R27M R23X R27N R23W 17.3 R25Q 84.8 R29L R27P R29M R23Y R29N R25V R31M R25X R25W R27Q R25Y R27V R27X R27W R27Y R29Q R29V R29X R29W R31Q Static Pressure = 37 R23N R25M R25L R23P R21Y R25N R25P R23V R27L R27M R23X.4 R27N R23W R25Q R29L R27P R29M R23Y R29N R25V R31M R29P R25X R25W R27Q

14 SELECTION CHARTS TBR Static Pressure = 37 R25Y R27V R27X R27W R27Y R29Q R29V R29X R29W R31Q R31V Static Pressure = 38 R23N R21Y R25M R25L R23P R25N R25P.9 R23V 59.0 R27L R27M R23X 19.4 R27N R23W R25Q R29L R27P R29M R23Y R29N R25V R25X R31M R29P R25W R27Q R31N R25Y R27V R27X R27W R27Y R29Q R29V R29X R29W R31Q R29Y R31V R31X R33Q Static Pressure = 39 R25M R25L 10.8 R23P R25N R23V R25P 02.5 R27L R27M R23X R27N R25Q R23W R29L R27P R29M R23Y R25V R29N R31L R25X R31M R29P R25W R27Q R31N R25Y R27V R27X R27W R27Y R29Q R29V R29X R29W R31Q R29Y R31V R31X R33Q Static Pressure = R25M R25L R23P R23V 10.1 R25N R25P R27L R23X R27M R25Q 09.6 R23W R27N R29L R29M R27P R23Y R25V R29N R31L R25X R31M R29P R25W R27Q R31N R25Y R27V R27X R27W R33M R27Y R29Q R29V R29X R29W R31Q R29Y R31V R31X R31W R33Q Static Pressure = 42 R23P R25L R25N R23X 93.9 R25P R27L R25Q R27M R23W R27N R29L R23Y R29M R27P R25V R29N R25X R31L R31M R29P R25W R27Q R31N R25Y R27V R31P R27X R27W R33M R29Q R27Y R29V R29X R29W R31Q R29Y R31V R31X R31W R33Q R33V Static Pressure = 44 R25N R25P R23W R27L R27M R27N R23Y R29L R25V Static Pressure = 44 R29M R27P R29N R25X R31L R27Q R25W R31M R29P R31N R25Y R27V R31P R27X R33L R27W R33M R29Q R27Y R33N R29V R29X R29W R31Q R29Y R31V R31X R31W R33Q R31Y R33V R33X Static Pressure = 46 R25P R27M R27L R23Y R27N R25V R29L R29M R27P R25X R29N R27Q R25W R31L R31M R29P R31N R25Y R27V R31P R27X R33L R27W R33M R29Q R27Y R33N R29V R29X R29W R31Q R29Y R31V R31X R33Q R31W R31Y R33V R33X R33W Static Pressure = 48 R25P R27M R27L R27N R29L R29M R25X 67.0 R27P R27Q R29N R25W R31L R31M R29P R25Y R31N R27V R31P Static Pressure = 48 R27X R27W R33L R33M R29Q R27Y R33N R29V R33P R29X R31Q R29W R29Y R31V R31X R33Q R31W R31Y R33V R33X R33W R33Y Static Pressure = 50 R25P R27L R27N R27Q R29L R29M R27P R25W R29N R31L R31M R29P R25Y R27V R31N R27X R31P R27W R33L R29Q R33M R27Y R33N R29V R33P R29X R31Q R29W R29Y R31V R31X R33Q R31W R31Y R33V R33X R33W R33Y Static Pressure = 52 R27N R29M R29L R27P R25W R29N 35.3 R31L R31M R25Y R29P R27V R31N R27X R31P R27W R33L R29Q R33M R27Y R33N R29V R33P R29X R31Q R29W R29Y R31V R31X R33Q R31W R31Y Static Pressure = 52 R33V R33X R33W R33Y Static Pressure = 54 R27N R29M R29L R27P R29N R25Y R27V R31L R31M R29P R31N R27X R31P R27W R29Q R33L R33M R27Y R33N R29V R33P R29X R31Q R29W R29Y R31V R31X R33Q R31W R31Y R33V R33X R33W R33Y Static Pressure = 56 R29M R29L R27P R25Y R29N R31L R31M R29P R27X R31N R27W R29Q R31P R33L R33M R27Y R33N R29V R29X R33P R31Q R29W R29Y R31V R31X R33Q R31W R31Y R33V R33X R33W R33Y Static Pressure = 58 R29L R27P R29N R31L R31M R27X R29P R31N R29Q R27W R31P R33L R27Y R33M R29V R33N R29X R31Q R33P TWIN CITY FAN - CATALOG 10

15 SELECTION CHARTS TBR Static Pressure = 58 R29W R31V R29Y R31X R33Q R31W R31Y R33V R33X R33W R33Y Static Pressure = 60 R29L R27P R29N R31M R31L R29P R31N R27W R31P R27Y R33L R33M R29V R33N R29X R31Q R33P R29W R31V R29Y R31X R33Q R31W R33V R31Y R33X R33W R33Y Static Pressure = 62 R29N R31M R31L R29P R27W R31N R31P R27Y R33L R33M R29V R33N R29X R31Q R33P R29W R31V R29Y R31X R33Q R31W Static Pressure = 62 R33V R31Y R33X R33W R33Y Static Pressure = 64 R31M R31L R29P R31N R27Y R31P R29V R33L R33M R31Q R29X R33N R29W R33P R31V R29Y R31X R33Q R31W R33V R31Y R33X R33W R33Y Static Pressure = 66 R31L R29P R27Y R31N R31P R33L R33M R31Q R29X R33N R29W R33P R31V R29Y R33Q R31X R31W R33V R31Y R33X R33W R33Y Static Pressure = 68 R31L R29P R31N R31P R33L R33M R29X Static Pressure = 68 R33N R29W R33P R31V R29Y R33Q R31X R31W R33V R31Y R33X R33W R33Y Static Pressure = 70 R29P R31N R31P R33L R33M R33N R29W R33P R31V R29Y R33Q R31X R31W R33V R31Y R33X R33W R33Y Static Pressure = 72 R31P R33M R33L R29W R33N R31V R33P R29Y R33Q R31X R31W R33V R31Y R33X R33W R33Y Static Pressure = 74 R33M R31P R33L R29W R33N R31V R29Y R33P R33Q R31X R31W Static Pressure = 74 R33V R31Y R33X R33W R33Y Static Pressure = 76 R33M R31P R33L R33N R29Y R33Q R33P R31X R31W R33V R31Y R33X R33W R33Y Static Pressure = 78 R33L R31P R29Y R33N R31X R33P R31W R33V R31Y R33X R33W R33Y Static Pressure = 80 R33L R31P R33N R33P R31W R33V R31Y R33X R33W R33Y Static Pressure = 82 R33N R33P R31W R33V R31Y R33X R33W R33Y Static Pressure = 84 R33N R33P R31W R33V R31Y R33X R33W R33Y Static Pressure = 86 R33P R33V R31Y R33X R33W R33Y Static Pressure = 88 R33P R31Y R33X R R33Y Static Pressure = 90 R33P R33X R33W R33Y Static Pressure = 92 R33P R33W R33Y Static Pressure = 94 R33P R33W R33Y Static Pressure = 96 R33W R33Y Static Pressure = 98 R33Y Static Pressure = 100 R33Y Static Pressure = 102 R33Y Twin City Fan 15

16 PERFORMANCE CURVES TBA 706: P5 P3 S5 S3 M5 M3 TBA TBA 710: P7 S7 M CFM IN 10 S TBA 806: P5 P3 S5 S3 M5 M3 TBA 810: P7 S7 S5 M TBA 906: P5 P3 S5 S3 M5 M3 TBA 910: P7 S7 S5 M *INDICATES MOTOR OPERATION AT 1.15 SF TWIN CITY FAN - CATALOG 10

17 TBA 1006: P5 P3 S5 S3 M5 M3 TBA 26 PERFORMANCE CURVES TBA 1010: P7 S7 S5 M TBA 1106: P5 P3 S5 S3 M5 M3 32 TBA 1110: P7 S7 S5 M TBA : P5 P3 S5 S3 M5 M3 36 TBA 10: P7 S7 S5 M *INDICATES MOTOR OPERATION AT 1.15 SF 17

18 PERFORMANCE CURVES 44 TBA 1306: P5 P3 S5 S3 M5 M3 TBA 44 TBA 1308: P5 P3 S5 S3 M5 M TBA 1310: P7 S7 M7 48 TBA : P5 P3 S5 S3 M5 M TBA 18: P5 P3 S5 S3 M5 M3 48 TBA 1410: P7 S7 M CFM IN 1000 S *INDICATES MOTOR OPERATION AT 1.15 SF 18 TWIN CITY FAN - CATALOG 10

19 60 TBA 1506: P5 P3 S5 S3 M5 M3 TBA 60 PERFORMANCE CURVES TBA 1508: P5 P3 S5 S3 M5 M TBA 1510: P7 S7 M7 80 TBA 1706: P5 P3 S5 S3 M5 M CFM IN 1000 S CFM IN 1000 S 80 TBA 1710: P7 S7 M CFM IN 1000 S *INDICATES MOTOR OPERATION AT 1.15 SF 19

20 PERFORMANCE CURVES TBR R11: Y W X V Q TBR TBR R: Y W X V Q CFM IN 10 S CFM IN 10 S 18 TBR R13: P N M 18 TBR R13: Y W X V Q CFM IN 10 S CFM IN 10 S TBR R14: P N M TBR R14: Y W X V Q CFM IN 10 S CFM IN 10 S *INDICATES MOTOR OPERATION AT 1.15 SF TWIN CITY FAN - CATALOG 10

21 22 TBR R15: P N M TBR PERFORMANCE CURVES TBR R15: Y W X V Q CFM IN 10 S CFM IN 10 S 26 TBR R: P N M TBR R: Y W X V Q CFM IN 10 S CFM IN 10 S 36 TBR R18: P N L M 36 TBR R18: Y W X V Q CFM IN 10 S *INDICATES MOTOR OPERATION AT 1.15 SF 21

22 PERFORMANCE CURVES TBR R21: P N L M TBR 44 TBR R21: Y W X V Q CFM IN 10 S TBR R23: P N L M 52 TBR R23: Y W X V Q TBR R25: P N L M 60 TBR R25: Y W X V Q *INDICATES MOTOR OPERATION AT 1.15 SF 22 TWIN CITY FAN - CATALOG 10

23 70 TBR R27: P N L M TBR 70 PERFORMANCE CURVES TBR R27: Y W X V Q TBR R29: P N L M 90 TBR R29: Y W X V Q TBR R31: P N L M 100 TBR R31: Y W X V Q *INDICATES MOTOR OPERATION AT 1.15 SF 23

24 PERFORMANCE CURVES 100 TBR R33: P N L M TBR 110 TBR R33: Y W X V Q *INDICATES MOTOR OPERATION AT 1.15 SF Twin City Fan TWIN CITY FAN - CATALOG 10

25 Model HRO / HRS ALTERNATIVE HIGH PRESSURE FANS Model TBNA / TBNS Airflow to 10,000 CFM Static pressures up to 1" w.g. HRO - Wheel: radial bladed with backplate and no front shroud HRS - Wheel: radial bladed with backplate and shroud Additional information can be found in Catalog Airflow to 5,0 CFM Static pressures up to 57" w.g. TBNA - Backward inclined aluminum wheel designed to handle clean-air applications up to 0 F TBNS - Radial steel wheel designed to handle fumes, light particulates, and temperatures up to 600 F Additional information can be found in Catalog 50. Model MBO / MBR / MBW Model BCN Airflow to 19,000 CFM Static pressures over 5" w.g. MBO - Open radial blades for handling hot, stick and abrasive airstreams MBR - Radial blades with front and back plate for handling clean, hot, or particulate laden airstreams. The most pressure and highest efficiency at a given speed of any MB-Series fan Airflow to 75,000 CFM Static pressures to 100" w.g. BCN - High pressure fan utilizing a high efficiency, backward curved, non-overloading blade design. Suitable for clean to light particulate-laden air. Additional information can be found in Catalog MBW - Radial blades with back plate and no front plate to handle long, stringy, or fibrous materials. Additional information can be found in Catalog

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