... steel, stainless steel ISO, API CE certificate Pneumatic Knife gate valve, wafer type knife gate valve, Lug knife Gate valve.,Valve,Cast steel knife gate valve, Stainless steel knife ... SS301, 316L), Cast Iron 4). Seal: Rubber, PTFE, Stainless steel, Hard Alloy 5). Working temperature: Rubber <100'C, Hard-seal< 425'C ... MPa)Working temperature (°C)Appropriate media1.0 1.61.5 2.41.1 1.8Rubber≤100°C Y/H≤ ...