Safety Relief Expansion Valves DSV311430
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Caleffi 311 series safety relief valve for use in central heating systems.
Connections: 15mm x 15mm outlet (female connections)
Pressure rating: 300kPa
Discharge overpressure: 20%
Closing differential: 20%
Temperature range: 5–110°C
Body: brass EN 12165 CW617N
Cover: brass EN 12165 CW617N
Control Stem: brass EN 12164 CW614N
Obturator Seal: EPDM
Diaphragm: EPDM
Spring: steel EN 12270-1
Control Knob: ABS
Nominal Pressure: PN10
Working Temperature Range: 5-110°C
