K297-0257 GIACOMINI | Alldatasheet
Document overview
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Technical content
Three wa y mixing valve wiTh pisTon obTuraTor - K297 0257EN January 2013 ISO 9001 ISO 14001 0032A/2 OHSAS 18001 0064L/0 Main features Some technical information is also on the brass collar of the valve:
- KV / CV
- Max. fluid temperature
- Pressure Test
- Production date Allowed installations Flow directions
Description
K297 mixing valve can be used in in hydronic heating and cooling systems, for an effective control of the temperature of water delivered to the system. The mix between flow from central unit and return from the system is modulated by a piston obturator with linear characteristic. K274J actuator (24 V – 3 points floating or 0-10 V), that can be purchased separately, is completely integrated with Giacoklima thermoregulation systems. Versions and product codes Technical data Max. fluid temperature: 140 °C (1 bar satured steam) Ambient temperature range: -20÷65 °C Max. working pressure: 16 bar Female thread connections: Cylindrical gas (DIN 259, ISO 228-1) Obturator stroke: 8 mm (DN20) 13 mm (DN25, DN32) 19 mm (DN40, DN50) Max. Δp with completely open valve: 249 kPa (DN20, DN25, DN32) 200 kPa (DN40, DN50) Compliance PED 97/23/EC (Article 3.3) CE mark not required (DN20, DN25) PED 97/23/EC (Category 1, mod. A) CE mark applied (DN32, DN40, DN50) Materials Valve body: bronze - ANSI B16.15, class 250 Stem: stainless steel Seat and obturator: brass with soft disc Stuffing box: EPR conical scalar ring L yy ww L: function yy: year ww: week 1) Connection to central unit 2) By-pass connection 3) Mixing unit K297 Product code DN Threaded connections Kv Actuator product code ΔP max. N.C. (kPa) K297Y004 20 3/4”F 6,3 K274Y022 (3 points floating) K274Y042 (0-10 V) 950 K297Y005 25 1”F 10 K274Y022 (3 points floating) K274Y042 (0-10 V) 595 K297Y006 32 1 1/4”F 16 K274Y022 (3 points floating) K274Y042 (0-10 V) 360 K297Y007 40 1 1/2”F 25 K274Y022 (3 points floating) K274Y042 (0-10 V) 235 K297Y008 50 2”F 40 K274Y022 (3 points floating) K274Y042 (0-10 V) 145
Three wa y mixing valve wiTh pisTon obTuraTor - K297 0257EN January 2013 ISO 9001 ISO 14001 0032A/2 OHSAS 18001 0064L/0 Losses of pressure Dimensions 50.000 100 500 1.000 5.000 10.000 0,1 0,5 1 5 10 ΔP [m H2O] Q [l/h] KV 40 KV 25 KV 16 KV 10 KV 6,3 B A Product code A (mm) B (mm) K297Y004 80 54 K297Y005 105 65 K297Y006 120 70 K297Y007 130 85 K297Y008 150 95 Altre informazioni Per ulteriori informazioni consultare il sito www.giacomini.com o contattare il servizio tecnico: ' +39 0322 923372 6 +39 0322 923255 * consulenza.prodotti@giacomini.com Questa comunicazione ha valore indicativo. Giacomini S.p.A. si riserva il diritto di apportare in qualunque momento, senza preavviso, modifiche per ragioni tecniche o commerciali agli articoli contenuti nella presente comunicazione. Le informazioni contenute in questa comunicazione tecnica non esentano l’utilizzatore dal seguire scrupolosamente le normative e le norme di buona tecnica esistenti. Giacomini S.p.A. Via per Alzo, 39 I-28017 San Maurizio d’Opaglio (NO) Italy Additional information For additional information please check the Giacomini website at the following address: www.giacomini.com ' +39 0322 923 372 6 +39 0322 923 255 * consulenza.prodotti@giacomini.com This pamphlet is merely for information purposes. Giacomini S.p.A. retains the right to make modifications for technical or commercial reasons, without prior notice, to the items described in this pamphlet. The information described in this technical pamphlet does not exempt the user from following carefully the existing regulations and norms on good workmanship. Giacomini S.p.A. Via per Alzo 39, I-28017 San Maurizio d’Opaglio (NO) Italy