The first valve of its size capable of handling liquid and gas interchangeably without adjustments while remaining stable, the Type 1900 Universal Media safety relief valve offers an innovative solution for multi-phase process applications. It is configured for performance and smooth operation while offering the economical flexibility of one valve for both liquid and vapor. It reduces inventory requirements, offers simplicity of application and a low adjustable blowdown rate.
Options for 1900 Series Safety Relief Valve
The 1900-30 Series valve includes the addition of a balanced bellows that is necessary to compensate for the effects of variable back pressure. By isolating the upper structure and allowing the use of less expensive materials, the bellows is also a cost-effective solution in applications where the valve is exposed to highly viscous or corrosive fluids.
The 1900-DA Series valve contains an additional O-ring seat seal. This soft seat is the primary seal and it allows the valve to remain leak free at 95 percent of set pressure over 100 psig (6.89 barg). A backup metal seat provides additional safety for fire-relief applications when O-rings can be destroyed by high temperature exposure.The 1900-DA Series O-ring seat is available for set pressures up to 6250 psig (430.92 barg). Some soft seats offered by other manufacturers are limited to 1500 psig (103,42 barg).