Description: 1/8 in. NPT Air Vent for heating and cooling systems Application Residential or commercial heating and cooling systems and solar systems. Connection Type: Male NPT Connection Size: (in.) 1/8 in. Maximum Safe Operating Pressure: (psi) 150 psi Maximum Safe Operating Pressure: (kPa) 1034 kPa Maximum Operating Temperature (F): 240 F Maximum Operating Temperature (C): 115 C Dimensions (in.): 2 in. high x 1 5/32 in. diameter Dimensions (mm): 51 mm high x 29 mm diameter Materials (Body): Brass Weight (lb): 0.12 lb Weight (kg): 0.06 kg