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R 257

Product catalog summary

Classification: The document describes the R Dual Series, specifically the R 257 model, which is a dual-type solenoid valve with a 180° geometry.

Working Specifications: The valve operates at a maximum pressure of 10 bar and is suitable for ambient temperatures ranging from 0 to 60°C. The fluid temperature can be 25°C at 100% duty cycle, 60°C at 100% duty cycle, and 90°C at 60% duty cycle. It supports unidirectional flow with a rated diameter of 8 mm. The valve features bistable electrical control with normally closed (NC) and normally open (NO) options.

Physical Specifications: The valve body is made of PA 6,6 with 30% glass fiber, the diaphragm is available in NBR (buna) or silicone, and both the core and spring are made of stainless steel. The assembly is secured with screws.

Hydraulic Connections: The inlet connection is a G 3/4" male thread, and the outlet connection is a hose tail with a diameter of 10 mm.

Installation: The valve can be installed in any position using plastic or metal brackets without affecting its functionality.

Applications: The valve is suitable for automatic water control in various applications such as water and sanitary installations, coffee machines, water dispensers, public urinals, taps, and showers.

Certifications: The document mentions electrical and food approvals, indicating compliance with relevant standards for safety and hygiene.

Catalog excerpts

Serie R Dual - R Dual Series Via S. Ambrogio, 3 22070 Carbonate (CO) Italy Tipologia Dual CLASSIFICATIONType Geometry WORKING SPECIFICATIONS Working pressure Room temperature Fluid temperature Flow direction Rated diameter Elect. Pilot/Control CARATTERISTICHE DI LAVOROPressione di esercizio Temperatura ambienteTemperatura fluido Direzione del fluido Diametro di passaggio Elet.Pilota/Comando PA 6,6 30% fibra vetro NBR (buna); Silicone Acciaio Inox Acciaio Inox Con viti CARATTERISTICHE FISICHE Corpo valvola Valve body PA 6,6 30% glass fiber NBR (buna); Silicone Stainless steel Stainless steel With screws CONNESSIONI IDRAULICHE Connessioni in ingresso Filetto G 3/4" Maschio HYDRAULIC CONNECTIONS Inlet connections G 3/4" Male Thread Connessioni in uscita Portagomma 0 10 mm Outlet connections Hose Tail 0 10 mm Il prodotto puo essere montato in qualsiasi posizione, mediante staffe di fissaggio, senza comprometterne il funzionamento. The valve can be installed in any position, with plastic or metal bracket, without compomising the functionality. Solenoidi Serie R (vedi tabella) Vedi tabella. Ovunque necessario il controllo automatico di acqua. Idrosanitari, elettrodomestici, macchine caffe, distributori acqua, rubinetteria, urinatoi, vasche idromassaggio. Solenoids R Series (see chart) Wherever an automatic water control is needed. Water and sanitary installations, coffee machines, water dispensers, public urinals, taps, showers. Certificazioni elettriche Certificazioni alimentari Electrical approvals Food approvals

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R 257 ELETTROVALVOLE IDRAULICHE SOLENOID VALVES R.P.E s.r.l. si riserva la propriet di questo disegno con divieto di riprodurlo o renderlo noto a terzi senza la sua autorizzazione

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