Brass Fitting, Drain Cock, 1/4" Pipe Thread, Maximum operating pressure: 150 psi. Applications: air, water, gas, fluids (not intended for natural gas, LPG or lubricants)Drain Cocks and Shutoff Cocks are manufactured for low pressure applications. External seat and internal seat Drain Cocks are manufactured to the highest quality standards. Hand tightening provides leak-proof metal-to-metal seal. A universal lubricant satisfactory with most common fluids is used with Shutoff Cocks but may wash out at higher pressures or with exotic fluids.