Dual check valves use two independently acting checks in series to limit reverse flow and protect a potable water supply in low-hazard applications. Austworld 20mm & 25mm valves have female x female connections; the HR Products 25mm valve has male x female connections. The connection arrangements and minimum operating pressures differ, so each model needs to be selected for its installation.
The Austworld female x female valves operate from 60kPa to 1200kPa. The HR Products male x female valve operates from 220kPa to 1200kPa. Both designs have a working temperature range of 1°C to 60°C and can be installed horizontally or vertically.
Use the correct device for the installation’s assessed hazard level and required backflow protection. These models are intended for low-hazard service. The Austworld valves are for cold-water installations.
Female x female valves operate at 60-1200kPa. The 25mm male x female valve operates at 220-1200kPa.
Brass Dual Check Valve FF Specifications
HR Products Brass Dual Check Valve 25mm MF Specifications
