MODEL NUMBER SELECTION By-Pass size: F3900 . .U. . . . . .Y.2 15 = DN15 / 1/2” female threaded 20 = DN20 / 3/4” female threaded 25 = DN25 / 1” female threaded Handle orientation: U = Up (standard) Strainer size: 042 = DN15 / 1/2” strainer incl. blowdown 052 = DN20 / 3/4” strainer incl. blowdown 062 = DN25 / 1” strainer incl. blowdown PICV housing size: 01 = DN15 / 1/2" AB housing incl. p/t plugs 02 = DN20 / 3/4" AB housing incl. p/t plugs 07 = DN25 / 1" AB housing incl. p/t plugs PICV insert type: 000 = flushing cap G0 = Green.0 insert G1 = Green.1 insert G1HF = Green.1 High Flow insert G0EQ = GreEQ.0 insert G1EQ = GreEQ.1 insert Type of actuator: 00 = No actuator Thermal 24V modulating 22 = FT.0.2 230V 24V 23 = FT.0.3 24 = FT.0.4 Gear 32 = FN.0.2 35 = FNP.0.2 36 = FNR.0.2 37 = FNR.0.2-EQ 38 = FNR.0.3 34 = FN.0.4 Gear failsafe 40 = FNJ.1.2 41 = FNJ.1.2-EQ 44 = FN.1.4 Flexible hoses: 0 = no flexible hoses (standard) G = flexible hoses, coil side Insulation: Y = with insulation shell (standard) Assembly 2 = assembled and tested (standard) Example: F3900.20.U.052.02.G0.32.0.Y.2 = FlowCon By-Pass assembly with DN20 (3/4”) female threaded connection incl. F-Strainer DN20 (3/4”) ISO female threaded body DZR brass incl. blowdown and AB-housing DN20 (3/4”) ISO female threaded body DZR brass incl. p/t plugs. AB-housing includes a Green.0 insert and an electrical 24V modulating actuator. Please note: - Strainer will always be facing down, bypass handles will be facing up and PICV valve will be on its side. - All By-Pass Assemblies come complete and fully pressure tested. - Insert, actuator and insulation shell may be delivered separately. For other configurations and options, please contact FlowCon International. Tech note · FlowCon By-Pass Assembly DN15-25 · january 2023 · www.flowcon.com Page 8 of 14
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