TT9800 Breather Valve – Pilot-Operated Pressure Vacuum Relief Valve

  • Size: 2″ to 12″
  • Pressure setting: 2.0 mbar to 69 mbar
  • Vacuum setting: 0.2 mbar to 4.3 mbar
  • Materials available: Aluminum, carbon steel, stainless steel, fiberglass, and others
  • Modular structure
  • Proprietary technology for 10% overpressure disc
  • FEP diaphragm effectively prevents adhesion between the valve seat and disc, with options for other soft or hard sealing structures based on operational requirements
Inquiry Now!

The YeeValve TT9800 Breather Valve, a Pilot-Operated Pressure Vacuum Relief Valve, is designed for use on liquid storage tanks and other containers or systems to prevent damage due to excessive internal pressure or vacuum.

Compared to standard relief valves, the pilot-operated valve offers two primary advantages:

  1. It provides an airtight response to set pressures.
  2. It fully opens when pressures are within 10% below the set threshold. These features allow it to operate very close to the maximum allowable working pressure of the storage tanks. The higher operational pressure reduces evaporation and venting, thereby minimizing product loss and the cost associated with handling emissions.