About this item The tee fittings are made of 304 stainless steel, which is corrosion-resistant, rust-proof and high-temperature resistant. Can extend the service life. The size is 3/4 & 1/2 inch NPT female thread, NPT thread can seal more tightly than straight thread. Suitable for connecting external threaded pipes. T type, 3 ways to connect and branch three sections of pipeline The temperature range is from -65 to 250 ℉. The maximum working pressure is 150PSI. Wide range of applications: used in agriculture, construction sewage, road construction, fire fighting system, chemical industry, etc.