Installed at the bottom of the pump suction line. Thread: ISO 228 Operating temperature: 0-90°C Nominal pressure: – PN 10 bar for D. -1 – PN 8 bar for D. 1 1/4- 2 – PN 6 bar for D. 2 1/2- 3. Body and valve material: brass CW617N Warranty: 2 years.