Dimensions Table
| Unit Number | Tank Cap. Gal. | Tank Shell Size | A | D | E | F | G | H | J | K |
| BFV-1510 THRU 1580 | 26 | 18x24 | 33 | 1 | 18 | 22 | 2 | 1 | 0.5 | 18 |
| BFV-3010 THRU 3080 | 33 | 18x28 | 37 | 1 | 18 | 22 | 3 | 1 | 0.5 | 18 |
| BFV-5010 THRU 5080 | 45 | 18x36 | 45 | 1 | 18 | 22 | 3 | 1 | 0.5 | 18 |
| BFV-7510 THRU 7580 | 100 | 24x48 | 57 | 1 | 24 | 28 | 4 | 1.25 | 0.5 | 24 |
| BFV-10010 THRU 10080 | 100 | 24x48 | 57 | 1 | 24 | 28 | 4 | 1.25 | 0.5 | 24 |
| BFV-15010 THRU 15080 | 150 | 30x48 | 57 | 1.25 | 30 | 34 | 4 | 1.5 | 0.75 | 30 |
| BFV-20010 THRU 20080 | 220 | 30x72 | 81 | 1.5 | 30 | 34 | 4 | 2 | 0.75 | 30 |
| BFV-25010 THRU 25080 | 250 | 30x84 | 93 | 1.5 | 30 | 34 | 4 | 2 | 0.75 | 30 |
| BFV-30010 THRU 30080 | 315 | 36x72 | 81 | 1.5 | 36 | 40 | 4 | 2 | 0.75 | 36 |
| BFV-40010 THRU 40080 | 390 | 36x84 | 93 | 1.5 | 36 | 40 | 4 | 2 | 0.75 | 36 |
| BFV-50010 THRU 50080 | 500 | 42x84 | 93 | 1.5 | 42 | 46 | 4 | 2 | 0.75 | 42 |
| BFV-75010 THRU 75080 | 750 | 48x96 | 105 | 2 | 48 | 52 | 6 | 2.5 | 1 | 48 |
| BFV-100010 THRU 100080 | 1000 | 48x120 | 129 | 2 | 48 | 52 | 6 | 2.5 | 1 | 48 |
Variable Table
| Tank Dia. | Pump | B | L |
| 18 | CC | 30 | 33 |
| 18 | CG | 35 | 38 |
| 18 | CK | 38 | 41 |
| 18 | CKH | 40 | 43 |
| 24 | CC | 36 | 39 |
| 24 | CG | 41 | 44 |
| 24 | CK | 44 | 47 |
| 24 | CKH | 46 | 49 |
| 30 | CC | 42 | 45 |
| 30 | CG | 47 | 50 |
| 30 | CK | 50 | 53 |
| 30 | CKH | 52 | 55 |
| 36 | CC | 48 | 51 |
| 36 | CG | 53 | 56 |
| 36 | CK | 56 | 59 |
| 36 | CKH | 58 | 61 |
| 42 | CC | 54 | 57 |
| 42 | CG | 59 | 62 |
| 42 | CK | 62 | 65 |
| 42 | CKH | 64 | 67 |
| 48 | CC | 60 | 63 |
| 48 | CG | 65 | 68 |
| 48 | CK | 68 | 71 |
| 48 | CKH | 70 | 73 |
2. For units with butterfly suction valves, add 2" to the 'B' and 'L' dimensions.
SINGLE AND MULTIPLE BOILER INSTALLATIONS:
If one boiler is being fed, one pump may be used, actuated by the level control mounted on the boiler. A duplex feed unit may also be used with each of the two pumps sized to independently feed the boiler. For the duplex unit, a "Lead- Lag" switch may be used to manually select the lead pump and, if desired, to permit two-pump simultaneous operation when necessary, or an electric alternator can automatically alternate the pumps and provide simultaneous emergency operation.
When feeding two boilers with two pumps, each pump can be sized to feed one of the boilers, being actuated by the water level control on its assigned boiler. A transfer switch may be used with this arrangement, along with necessary cross-over piping, to manually change the boiler-pump relationship. A third pump may be used as standby for either boiler and can be operated manually, or automatically with electric valves, in emergencies.
When feeding two, three or more boilers, two pumps can be used, each individually sized to handle the combined load of all boilers. The second pump acts as a standby and provides double capacity in emergencies. Both pumps feed a common header from which feed lines branch off to each boiler. The level control on a boiler operates the corresponding electric valve in its branch feed line, and an end switch in the valve turns on the pump. A "Lead-Lag" switch or automatic alternator can be supplied for these arrangements. A third pump can be used for standby service.
Engineering Equivalents Table
| 1,000 sq. ft. E.D.R. | = | 240,000 BTU per hr. |
| 1,000 sq. ft. E.D.R. | = | 247 lbs. Water Evap. per hr. |
| 1,000 sq. ft. E.D.R. | = | 1/2 gal. Water Evap. per min. |
| 1 sq. ft. E.D.R. | = | 240 BTU per hr. (Steam) |
| 1 sq. ft. E.D.R. | = | 150 BTU per hr. (Hot Water) |
| 1 sq. ft. E.D.R. | = | 1/4 lb. Water Evap. per hr. |
| 1 Boiler HP. | = | 33,475 BTU per hr. |
| 1 Boiler HP. | = | 34.5 lbs. Water Evap. Per hr. (at 212 degrees F) |
| 1 Boiler HP. | = | .07 gal. Water Evap. per min. |
| 1 Boiler HP. | = | 140 sq. ft. E.D.R. (Steam) |
| 1 Boiler HP. | = | 222 sq. ft. E.D.R. (Hot Water) |
| 1 lb. P.S.I. | = | 2.31 ft. of Water |
| 1 lb. P.S.I. | = | 2.04 ins. of Mercury |
| 1 lb. P.S.I. | = | .068 Atmosphere |
| 1 ft. of Water | = | .433 lbs. P.S.I. |
| 1 ft. of Water | = | .882 ins. of Mercury |
| 1 ft. of Water | = | .029 Atmosphere |
SIZING DATA
PUMP CAPACITY: Multiply the developed boiler H,P. by .07 to determine the evaporation rate of the boiler (expressed in gallons per minute). Next, multiply this evaporation rate by 3 to determine the capacity of the feed pump (in G.P.M). This factor of 3 allows the pump to cycle at reasonable intervals. If one boiler is being fed, a simplex unit may be used, but a duplex unit (with each pump sized to independently feed the boiled has the advantage of providing an emergency standby pump or alternating the pumps for even wear. If two boilers are being fed, use duplex unit and size one pump for each boiler (specify 4-pole double throw transfer switch to cross pump-boiler assignment) or use triplex unit with each pump sized to feed one of the boilers (specify transfer switch to use one pump for standby service).
PUMP DISCHARGE PRESSURE: Discharge pressures in the Engineering Selection Table are pressures at the pump. To compute, add boiler working pressure plus static head (from pump center line to boiler connection center line) plus discharge line friction loss (including pipe, fittings, valves, etcJ. Convert all factors to P.S.I. before adding. Static head plus friction loss plus a small residual pressure can be estimated at 5 P.S.I. in most cases.
RECEIVER SIZE: Allow approximately one gallon of receiver capacity for each H.P. of boiler(s) being served. (Example: If two (2) 250 H.P. boilers are being fed by a duplex unit, receiver should have 500 gallon capacity.
