Critical Technical Advantages
High-Integrity Shutoff: The ES is engineered to provide exceptional sealing performance. With optional seat constructions, it can achieve Class V or VI shutoff. This is accomplished through controlled compression of a PTFE disk protected between a metal disk seat and a disk retainer, ensuring a tight seal even in difficult service.
NACE Compliance for Harsh Environments: This valve is a standard solution for sour gas and corrosive applications. Its materials and construction typically comply with NACE MR0175-2002, with options available to meet updated NACE MR0175 / ISO 15156 and MR0103 standards for stress-cracking resistance.
Rugged Cage Guiding: The valve plug is supported by a robust cage that provides continuous guiding. This mechanical stability significantly reduces vibration and mechanical noise, which is vital for maintaining the longevity of the trim in high-pressure drop scenarios.
Advanced Emission Control: To minimize process fluid loss and meet environmental mandates, the ES is compatible with ENVIRO-SEAL™ packing systems. These systems utilize live-loaded PTFE or Graphite ULF packing to provide a consistent, long-lasting stem seal with reduced maintenance requirements.
Efficient Flow Capacity: The valve body features streamlined flow passages that provide excellent capacity (Cv) and smooth flow dynamics, allowing for optimized performance within a relatively compact globe valve footprint.
Durable Hardened Trim: Increased wear resistance is provided by hardened stainless steel trim as standard. This ensures the valve remains in service longer by resisting the erosive effects of high-velocity fluids and particulates.
Technical Performance Matrix
| Feature | Details |
| Valve Style | Globe or Angle (Single Port) |
| Plug Design | Unbalanced (Higher shutoff force) |
| Guiding | Heavy-Duty Cage Guided |
| Shutoff Class | Up to Class V or VI |
| Body Metallurgy | Designed for NACE/Sour Service |
| Sealing | Optional PTFE disk with controlled compression |
Primary Applications
Oil and Gas Production: Handling separator fluids, wellhead automation, and gas processing in sour environments.
Chemical Processing: Managing chloride-rich or corrosive media that require high-integrity shutoff.
General Industry Throttling: High-performance control where tight shutoff (Class V/VI) is required to prevent downstream leakage.
Utility Steam and Water: Reliable isolation and throttling in facilities requiring EN/DIN standard compliance.
