HTDO、HTDB series Large Orifice Pressure Relief Valves
● ASME UV certified, and capacities are certified by the National Board Boiler and Pressure Vessel Inspector.
● Special design makes the disc to achieve full opening at small overpressure.
● Blowdown can be controlled by the blowdown adjustment ring.
● Strict manufacture technology assures that the pressure relief valves have high degree of seat tightness and long using life.
● Widely used on the pressure pipes and vessels of the chemical and petrochemical plants and system, and provide high quality overpressure protection.