Natural gas regulator

Emerson Process Management has released the DN 100 (4-inch) Fisher EZHSO Series spring-to-open pressure reducing regulator. The EZHSO design incorporates a unique spring cartridge that offers a fail-to-open alternative, ensuring gas delivery in the event of diaphragm failure or lack of supply pressure to the pilot. The failure action is the opposite of the EZH Series spring-to-close pressure reducing regulators.

The Types EZHSO and EZHSO-OSX (slam-shut) regulators are available in DN 25, 50, 80 (1, 2, 3-inch) and 100 (4-inch) sizes. These new offerings provide the same benefits as Emerson’s proven Fisher Type EZH regulators; such as true no-bleed design, top-entry maintenance, bubble-tight shutoff, and inlet/outlet rating of 103 bar (1500 psig).

The Whisper Trim Cage option is available for DN 50, 80 and 100 (2, 3, and 4-inch) sizes, opening a broader application range for this product family.  Noise reduction of 10-20 dB(A) can be achieved, depending on the application.  As a “source treatment”, the Whisper Trim technology utilises multiple orifices of special size, shape, and spacing, which reduces noise-producing interactions.