fitting stainless line logo.webp

Low-Emission Plug Valve

Flowserve engineered the Durco® G4XZ low-emission plug valve to carry out reliably and ensure compliance with probably the most stringent ISO and API fugitive emissions standards, including ISO 15848-1-BH-CO3 and API 641 1st version. The G4XZ valve can be utilized in hydrofluoric acid (HF) alkylation industry processes including:

Crude desalting

Gas crops


Light ends

Sulphur plants


Anhydrous hydrochloric acid (HCl)

Hydrofluoric acid (HF)

The versatile G4XZ valve also can be utilized for deadly, toxic and sub-zero fluid providers such as chlorine, anhydrous hydrogen chloride, phosgene, propylene oxide, isobutane and HF acid.
Reduced fugitive emissions

Operators can set up the Durco G4XZ valve with confidence in purposes with risky air pollutants and dangerous fluids. The Durco G4XZ valve design has undergone rigorous testing and is licensed to essentially the most stringent business requirements, including ISO 15848-1-BH-CO3 (2,500 mechanical cycles) and API 641 1st version.
Engineered for safety

The G4XZ valve ensures elevated plant and personnel safety by way of its fire-safe design and development that complies with API 607 7th edition and ISO 10497 2010 fire-safe requirements (for external leakage only).
Improved reliability and uptime

The tight shut-off performance is repeatable and dependable to attenuate unexpected downtime; The G4XZ valve design doesn’t require lubrication for sealing. Instead, the plug can simply be adjusted further into the sleeve to enhance sealing functionality.
Simplified, in- ไดอะแฟรม , packing and prime cap seal that permit easy adjustment or re-energization of seals as needed.