The Heatrae Sadia pressure relief valve helps to control pressure build up within a closed system. It is set to release pressure within the system by releasing water to prevent catastrophic boiler malfunction.

• Ideal for Santon Premier Plus Solar Cylinder
• Ideal for Heatstore HSU Unvented Cylinder
• Ideal for Pullin Evolution Stainless Steel Cylinder
• Ideal for Elson Unvented Cylinder
• Ideal for Main Unvented Cylinder
• Pressure is 6 bar