Type TAV is high capacity thermostatic air vent. Its balanced pressure design stainless steel welded actuator is capable of discharging air within 35°F / 2°C of saturated temperature. Thermostatic actuator employs a conical valve lapped in matched sets with the seat ring assuring tight shut off. Vent are stainless steel bodied suitable for pressures to 650 psig / 45 bar and available in NPS 3/8 to 1 / DN 10 to 25 with NPT or socket weld connections.