Type: Needle Valves. Pressure Rating: Up to 6000psig (340bar) @ 1000f(380 C). Temperature Rating: 650F-4500F(540C-2820C) with standard PTFE packing. and up to 6000F(3150C) with optional PEEK packing. Body Materials available: 316 stainless steel, alloy steel 400, and brass. 100% factory tested.