The compact design of this Brass Needle Valve allows for multiple configurations; straight or 90º elbow. It has a 500 psi rating and its maximum operating temperature is 180º F. The through hole diameter is .156. The stem seal is PTFE and the needle is available in Brass or Stainless Steel. The knob options are black-filled Polyester, yellow-filled polyester, or no knob. To enable panel mounting, a brass hex nut is supplied. The inlet sizes are 1/4" female NPT and 1/4" male and female NPT; the outlet size is 1/4" female NPT.