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The NABIC 500 high lift safety valve is ideal for unvented hot water heating systems needing high-capacity steam relief. Wetted parts are made from dezincification-resistant materials. It meets BS EN ISO 4126-1 standards and is WRAS approved. The valve features a resilient PTFE seating design offering excellent seat tightness. It comes with a locked and sealed pressure setting for added security. The design allows for easy inspection and cleaning and boasts a high discharge capacity. Parts are diaphragm protected. A padlock is available and complies with M&E3. The valve also offers an optional Viton seat design. Nabic 1 inch 500 High Lift Safety Valve operates at 5.0 Bar pressure.. Nabic 1 inch 500 High Lift Safety Valve - 5.0 Bar Brass N-500-025-5