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DIMENSIONS AND WEIGHT (NOMINAL) Model Model L D A no. size mm mm mm mm (in) (in) (in) (in) 15 (1/2) 20 132.5 57.5 80 (3/4) (5.22) (2.26) (3.15) F3910.XX 25 (1) 32 (1 1/4) 40 (1 1/2) 191.0 (7.52) 94.0 (3.70) 105 (4.13) 50 (2) Note 1: Add end connection length to By-Pass unit length, D. Note 2: Weight does not include connections. H mm (in) 80 (3.15) 134 (5.28) Valve size 15 (1/2) 20 (3/4) 25 (1) 25 (1) 32 (1 1/4) 40 (1 1/2) End connections C 1 Female ISO (NPT) Male ISO (NPT) 22 (0.87) 24 (0.95) 22 (0.87) 25 (0.99) - 39 (1.54) 35 (1.38) 40 (1.57) 33 40 (1.3) (1.57) 33 42 (1.3) (1.65) FCU side Sweat ISO 20 20 22 34 34 - Weight 2 kg (lb) 0.699 (1.54) 0.692 (1.53) 0.690 (1.52) 2.52 (5.56) 2.58 (5.69) 2.38 (5.25) C FCU side C A D L System side D A L System side H FlowCon F3900.X.X fixed end DN15/20/25 (1/2”, 3/4”, 1”) and union end DN15/20/25 (1/2”, 3/4”, 1”) H FlowCon F3900.X.X fixed end DN32/40/50 (1 1/4”, 1 1/2”, 2”) and union end DN25/32/40 (1, 1 1/4”, 1 1/2”) Tech note · FlowCon By-Pass 2-union · september 2023 · www.flowcon.com Page 2 of 4
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MODEL NUMBER SELECTION By-pass size, fixed end ( and ): 15 = female DN15 (1/2”) 20 = female DN20 (3/4”) 25 = female DN25 (1”) 32 = female DN32 (1 1/4”) 40 = female DN40 (1 1/2”) 50 = female DN50 (2”) F3910 . . . .I. Connection size and type, union end ( and ): 00 = no union ends Model and size Female threaded Male threaded F3910.XX. with union ends, DN15-25, 1/2”-1” E = 15 mm / 1/2” F = 20 mm / 3/4” H = 15 mm / 1/2” I = 20 mm / 3/4” J = 25 mm / 1” F3910.XX. with union ends, DN25-40, 1”-1 1/2” G = 25 mm / 1” J = 25 mm / 1” P = 32 mm / 1 1/4” S = 32 mm / 1 1/4” Q = 40 mm / 1 1/2” T = 40 mm / 1 1/2” Sweat K = 15 mm L = 18 mm M = 22 mm N = 28 mm W = 35 mm Connection standard: I = ISO (standard) Assembly requirement: 0 = not assembled (standard) 1 = assembled 2 = assembled and pressure tested Example: F3910.20.F.F.I.0 = DN20 (3/4”) fixed female FlowCon By-pass 2-uion with DN20 (3/4”) female union end connections, ISO, not assembled. Tech note · FlowCon By-Pass 2-union · september 2023 · www.flowcon.com Page 3 of 4
