Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F)., Specification: 1., Rated 150 PSI WSP for steam and 600 PSI WOG for water, oil and gas., 2., Constructed from extruded bar stock., 3., This fitting is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability., 4., Designed for use in air, water, oil, nature, manufactured, mixed, liquefied petroleum or propane and LP Gas-Air., 5., Use with brass, steel, and iron pipe; Teflon tape and thread sealant are recommended for threaded joints., 6., For connecting a female and a male pipe or fitting with different diameters., 7., When purchasing fittings, consider the application, as this will affect material type, shape, size, and required durability. NPT Pressure ratings listed are for temperature up to 37°C (100°F) Pressure rating is calculated at -28° to 37°C (-20° to 100°F) using allowable stress value of 20,000 PSI for SS316, 10,000psi for Brass, and 20,000 PSI for Carbon Steel as per ASME B31.3 Process Piping Code. Overall Pick 3/8 Inch Male x 1/4 Inch Female Reducing Adapter, NPT Brass Hex Bushing, Hex Head Pipe Fitting, Thread 0.625" OD × 0.5" ID, (Pack of 10) 100+ bought in past month Add to cart 【Tips】: Contains low-lead (no more than 2., 5%); Not for potable/drinking water use To determine the working pressure of ASME B31.1 Power Piping Code, multiply the ASME B31.3 rating by 0.94.Brass pressure ratings remain the same. Precision fittings connect with high-pressure (1000-3000 psi) pipe. Low-lead fittings are precision machined for leak-free connections between fittings and pipe, and include low-lead content rated for use with drinking water. Threaded connections use PTFE tape to secure seal Material: Heavy Duty Brass,strong and durable. Pipe Fitting Heavy Duty Brass Hex Bushing, Male Female NPT Reducer... Brass Pipe Fittings 【Package Include】: 4 PCS 3/8 Male NPT x 1/8 Female NPT Adapter Package includes: 4 x 3/8 Male NPT x 1/8 Female NPT Adapter. These pipe thread sizes are available 1/8 in.to 1 in. 3/8 NPT Male x 5/8 UNF Female Brass Hex Reducing Bushing Adapter...