Fomtec® BFZ 1 ½”-8”S between flange inductors Features Fixed between-flange installation High back pressure High suction height Suites all foams Description The Fomtec BFZ (Between Flange Z-inductor) series represents an extension of the existing line of Z-inductors for fixed use. Application The BFZ inductor can be installed in all fixed flow systems, especially in areas where deluge nozzles are used such as storage facilities and aircraft hangars. Picture shows the Fomtec BFZ 2” Operation The BFZ is installed inside the pipe work between two DIN-PN16-flanges. The BFZ works using the injector principle, i.e. foam concentrate is sucked into the inductor without using a foam pump. Both low and high viscosity concentrates can be used in conjunction with the BFZ. Depending on the requested flow, pressure, foam concentrate type and proportioning ratio, the inductor will be equipped with the exact orifice at the entry of the foam pipe. Induction performance and suction height can be adjusted up to a physical limit of approximately 8 meters. Optional The Fomtec BFZ inductor can be customized to handle a variety of flow rates as well as high viscous alcohol resistant concentrates. Inductors without balancing valve To get 34% pressure drop over the inductor and get the inductors proper function, the system after the inductor shall have a k-factor which is 27% higher than the k-factor of the inductor when using 3% foam and 30,5 % higher when using 6% foam. If the k-factor, on the system after the inductor, is less than 1.22 x the k-factor of the inductor, the suction ceases completely. Fomtec® is a trademark of Dafo Fomtec AB Picture shows the Fomtec BFZ 6” When ordering Each inductor is factory calibrated to match the specific system requirements. To ensure that the correct performance is achieved, the following parameters must be defined at the order stage: • inlet pressure • total system flow • foam type & viscosity • mixing percentage • vertical suction height • horizontal suction pipe length Revised: 05.03.2014 The independent alternative | Dafo Fomtec AB | P.O. Box 683 | SE-135 26 Tyresö | P: +46 8 506 405 66 | F: +46 8 506 405 29 | www.fomtec.com BFZ 1 ½“-8“S Technical data Model BFZ 1½ BFZ 2 BFZ 2½ BFZ 3 BFZ 4 BFZ 6 BFZ 8 BFZ 8-S Size DN 40 DN 50 DN 65 DN 80 DN 100 DN 150 DN 200 DN 200 Flow Rate (max) 480 lpm 1000 lpm 1600 lpm 2000 lpm 3300 lpm 6600 lpm 9900 lpm 16500 lpm Flow rate (min) 80 lpm 120 lpm 240 lpm 360 lpm 550 lpm 1100 lpm 1650 lpm 1650 lpm Inlet pressure (max) 16 bar 16 bar 16 bar 16 bar 16 bar 16 bar 16 bar 16 bar Inlet pressure (min) 4 bar 4 bar 4 bar 4 bar 4 bar 4 bar 4 bar 4 bar Pressure drop 35% 35% 35% 35% 35% 35% 35% 35% 40-120 60-180 120-400 180-500 275-1000 550-2000 825-3000 1375-5000 Proportioning rate 1, 3 or 6% 1, 3 or 6% 1, 3 or 6% 1, 3 or 6% 1, 3 or 6% 1, 3 or 6% 1, 3 or 6% 1, 3 or 6% Suction height (max) 3m 3m 3m 3m 3m 3m 3m 3m DN 40 DN 50 DN 65 DN 80 DN 100 DN 150 DN 200 DN 200 Foam inlet (A) 3/4" 3/4" Between Flange proportions(B) 38 K Factor Flange type PN16 1" 1" 1½" 2" 2½" 3" 38 45 52 58 70 85 85 Body size (F) 91 106 126 143 160 215 270 270 Height (H) 112 120 137 148 187 230 340 370 Length (LI) 12 12 15 9 20 25 20 15 Length (Lo) 223 223 360 360 343 335 330 330 Total Length (LT) 273 273 420 421 421 430 435 430 5xØ 5xØ 5xØ 5xØ 5xØ 5xØ 5xØ 5xØ Weight 3 kg 4 kg 4 kg 6 kg 7 kg 21 kg 40 kg 46 kg Material Bronze Bronze Bronze Bronze Bronze Bronze Bronze Bronze Pipe length up and down stream Fomtec® is a trademark of Dafo Fomtec AB Revised: 05.03.2014 The independent alternative | Dafo Fomtec AB | P.O. Box 683 | SE-135 26 Tyresö | P: +46 8 506 405 66 | F: +46 8 506 405 29 | www.fomtec.com BFZ 1 ½“-8“S Example: 200lpm inlet @ 7bar with a 3% mixing ratio: Qs = 1%, 3% or 6% Qv = Water Flow Qs = Foam Concentrate Flow H = Water pressure before the inductor A= 1.24 for 1% 1.27 for 3% 1.30 for 6% ( Qv + Qs) Qv ( 200 + 6) H 0,66 H 7 200 0,66*7 1,03/ 0,66 =1,27 Fomtec® is a trademark of Dafo Fomtec AB =A =A Revised: 05.03.2014 The independent alternative | Dafo Fomtec AB | P.O. Box 683 | SE-135 26 Tyresö | P: +46 8 506 405 66 | F: +46 8 506 405 29 | www.fomtec.com BFZ 1 ½“-8“S Working ranges BFZ 1 ½” BFZ 2” Inlet pressure (bar) Inlet pressure (bar) 16 16 14 14 12 12 10 10 8 8 6 6 4 4 2 2 50 100 150 200 250 300 350 400 450 100 500 200 500 600 700 800 900 1000 BFZ 3” Inlet pressure (bar) Inlet pressure (bar) 16 16 14 14 12 12 10 10 8 8 6 6 4 4 2 2 150 300 450 600 750 900 1050 1200 1350 1500 Flow rate (lpm) Fomtec® is a trademark of Dafo Fomtec AB 400 Flow rate (lpm) Flow rate (lpm) BFZ 2 ½” 300 200 400 600 800 1000 1200 1400 1600 1800 2000 Flow rate (lpm) Revised: 05.03.2014 The independent alternative | Dafo Fomtec AB | P.O. Box 683 | SE-135 26 Tyresö | P: +46 8 506 405 66 | F: +46 8 506 405 29 | www.fomtec.com BFZ 1 ½“-8“S BFZ 4” BFZ 6” Inlet pressure (bar) Inlet pressure (bar) 16 16 14 14 12 12 10 10 8 8 6 6 4 4 2 2 800 1600 2400 3200 4000 4800 5600 6400 7200 8000 400 800 1200 1600 2000 2400 2800 3200 3600 4000 Flow rate (lpm) Flow rate (lpm) BFZ 8” BFZ 8” S Inlet pressure (bar) Inlet pressure (bar) 16 16 14 14 12 12 10 10 8 8 6 6 4 4 2 2 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Flow rate (lpm) Fomtec® is a trademark of Dafo Fomtec AB 1800 3600 5400 7200 9000 10800 12600 14400 16200 18000 Flow rate (lpm) Revised: 05.03.2014 The independent alternative | Dafo Fomtec AB | P.O. Box 683 | SE-135 26 Tyresö | P: +46 8 506 405 66 | F: +46 8 506 405 29 | www.fomtec.com
© Copyright 2024 ExpyDoc
