Mini low pressure regulator is ideal for air flow applications that call for a compact unit, such as small pneumatic equipment, miniature valves and instruments. Easy to use; simply turn knob to regulate pressure. Gauge is not included. Product Features:1/4 national pipe thread1/8 national pipe thread gauge portsMaximum inlet pressure of 250 pounds per square inchMaximum 25 standard cubic feet per minuteBuna-N seal