fan coil valves series 2131 - 3131 - 4131

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fan coil valves series 2131 - 3131 - 4131

01F151-GBFAN COIL VALVESSERIES 2131 - 3131 - 4131MAINFEATURES- Available in the following versions :• 2 way, Size : 1/2” - 3/4” - 1”• 3 way, Size : 1/2” - 3/4” - 1”• 3 way 4 ports, Size : 1/2” - 3/4”- Compact sizes and reduced weights.- Conforms to Italian Law UNI 8156/81.


The fan-coil control valves Series 3131, 4131, are designedand built to be used both for diverting and mixingservice, provided the max. operating Dp given in the tablebe observed in order to avoid risk of faulty operation;except for valves Item 31311 (1”) where the recommendedapplication is solely that of diverting.ItemSizeHydraulic CharacteristicsKvsstraight wayKvby-pass∆P maxOperatingbar∆P close offwith10CNC/NA20CbarThe reliability of the fan-coil control valves Series2131, 3131, 4131 is guaranteed by the 100% testing onthe production, which check the hydraulic seals of thevalve body and its external components and that of theplug in its flow shut-off function.213112213134213111/2"3/4"1"1.72.85.2---------0.80.70.62.51.50.8INSTALLATIONChoice of fan-coil control valves depends on the type ofplumbing systems as well as the required flow rate andpressure drop characteristics.In systems with 2-way control valves it is advisable toprovide by-pass valves Series 466 to ensure a minimumrecirculation of the fluid.313112313134313114131121/2"3/4"1"1/2"1.72.5 (Mix)2.8 (Div)5.21.71.21.63.31.20.7 (Mix)0.8 (Div)0.5 (Mix)0.7 (Div)0.60.7 (Mix)0.8 (Div)2.51.50.82.5It is recommended not to install the valve with theactuator facing down.The valves can be connected by using the soft-sealtailpieces Series 840 with the range of single-piece orunion fittings (3-piece).413134 3/4"Mix: Mixing2.5 (Mix)2.8 (Div)1.80.5 (Mix)0.7 (Div)1.5Dev: DivertingMATERIALS OF CONSTRUCTIONBodyBrass CW617NRodBrass with chemical nickel-platingSpring AISI 302Overall Dimensions (mm)21313131PlugEPDMBCDDDDBSPECIFICATIONMax. pressure16 barADMin. fluid temperature 4 °CMax. fluid temperature 110 °C4131ALiquids which can be used Water also with glycol ≤ 30%Plug stroke2.5 mmBy-pass leakage< 0,02 % KvsActuator connection Threaded ring nut M 30 x 1.5D DCBAITEM SIZE A B C21311221313421311313112313134313114131124131341/2”3/4”1”1/2”3/4”1”1/2”3/4”52568252568252564345705658938386---2534413550

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