Habonim standard product lines cover a wide range of sizes and pressure classes, with countless variations of materials and designs to support global industrial demands. One of the unique features that Habonim provides to the industry in all its standard product lines is the HermetiX™ stem seal (Habonim design patent).
The HermetiX™ stem seal also includes a tough thrust bearing (CF PEEK by default) located between the stem and the valve body, and an anti-abrasion ring (CF PEEK by default) located between the soft HermetiX™ stem seal and the stainless steel follower. Both elements minimize erosion and loss of preload, thus keeping the stem components in their original condition and
extending their service life up to 500 thousand cycles.
The HermetiX™ stem seal is named for its distinctive “X”-shaped design. The flexible “X” shape creates a dynamic sealing arrangement so that, in the event of pressure build-up or side load, the HermetiX™ adjusts dynamically to prevent fugitive emissions. The result is a superior stem seal design compared with the conventional flat stem seals currently available on the market.
This design includes a polymer based stem seal and a unique fire safe certified construction. A durable stem seal, suitable for use in hazardous segments in the chemical, petrochemical and oil & gas industries, is designed to operate for 500,000 cycles without refurbishment − a dramatic improvement over the use of porous graphite stem seals.
The HermetiX™ fire safe valve meets the requirements of fire-safe API 607 / ISO 10497 standards, as well as the stringent ISO 15848-1 and API 641 standards.
This unique fire safe valve design specially designed for the biopharm industry includes the HermetiX™ stem seal consisting of a virgin PEEK thrust bearing and anti-abrasion ring, and a stem seal made of TFM material. Both virgin PEEK and TFM are FDA approved. A double body seal set is comprised of an internal PTFE body seal facing the media, and an external graphite seal to withstand the fire. This configuration effectively isolates the graphite seal in a dry cavity, preventing it from coming in contact with the media, ensuring a high level of purity for the valuable media.
The long-life HermetiX™ stem seal is Habonim’s patented solution for meeting the zero leakage, emission, and contamination requirements of valves for diverse use cases across a wide range of demanding sectors—energy, pharma, petrochemical, marine, and many more.