safety valve: 1.) 20-60 /30-70 degree 2.) CE,ISO9001:2008,ISO14001:2004 EN215 3 ... of body types to choose from: straight valve, angle valve, three-way valve; 6. According to European standard design, ... quality and reliable; Weight information (valve body only) DN15straight valveDN15straight valveDN20straight valveDN20angle valveDN25straight valveDN25angle ... g 455 g 600 g safety valve