MT Valves & Fittings product. 8.5 bar safety relief valve with male-female connection with handle. Reinforced body made of CW617N brass, with holder, stainless steel springs and EPDM seal. With thread in accordance with ISO 228/1 (DIN 259) and anti-drip device. This type of valve is designed to relieve excess pressure in hydraulic circuits. The set pressure is the point at which the valve opens and empties some of the fluid content until the pressure returns to the set pressure. Model 4413, ideal for use in both cold and hot water, has a handle for manually opening and relieving pressure. It has an opening pressure of 8.5 ± 0.5 bar and withstands a maximum operating temperature of 180°C. The wide range of MT valves aims to cover all market needs and satisfy the specific requirements in all geographical areas of the world and the various applications in sectors such as industry, plumbing, heating, irrigation, etc. Available references and published specifications: • 4413015 — measures: M-F SAFETY VALVE FOR HEATERS WITH HANDLE 8.5 BAR 1/2"; weight (kg): 0.07; small / large box: 1 / 150 Price and local availability on request. Source: https://mtspain.net/en/8-5-bar-m-f-safety-valve-with-handle/