Installed at the bottom of the pumps’ suction pipe. 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 flap material: CW617N brass Warranty: 2 years.