Skip to main content


ES axial flow valve


The ES axial flow valve offers world class performance, reliability and emissions control for a wide range of severe service applications in oil and gas, petrochemical and process industries. The ES provides zero-leakage isolation in a variety of materials and configurations from 2” to 12” (DN50 to DN300) and in pressures classes to ANSI 1500.


The ES axial flow valve has fundamentally transformed valve performance.

Because the ES does not have an external stem, there is no possibility of fugitive emissions through stem packing leaks. Further, because it does not have a mechanical drive train, it is not subject to stresses and side loading that cause poor performance and premature mechanical failure in other valve types.

With its pressure-balanced trim, the ES can be operated by a compact hydraulic power unit, significantly reducing the size and weight of the valve package.

The valve internals are also designed to provide very high flow rates while minimising turbulence. This reduces erosion on sealing surfaces and allows the ES to provide long-term zero leakage in a variety of severe applications.

Value proposition
Feature:Designed to operate at restricted flow and high differential pressure.
Benefit:ES withstands high velocities with no cavitation while maintaining tight shutoff.
Value proposition:ES will reduce process downtime caused by valve failure.
Feature:Does not have an external stem—a primary source of emissions.
Benefit:The ES does not require stem packing and maintenance to meet emissions requirements.
Value proposition:ES eliminates stem emissions, reducing OPEX related to valve packing.
Feature:Utilises a hydraulic power unit (HPU), rather than a conventional actuator.
Benefit:HPU is compact, efficient in transmitting force, and only requires 24VDC power and a control signal.
Value proposition:The HPU reduces valve package size and weight by 50% and reduces installation cost by 30%.
Valve variations

The ES axial flow valve is available in 2” through 12” (DN 50 to 300), in ANSI classes 150, 300, 600, 900 and 1500, in a variety of cast or forged materials, and in weld-end and flanged configurations.


Case studies

Oxford Flow lightens the load for Veolia

A long-sought-after lightweight, precision controlled solution that increases efficiency without compromising on quality. How Oxford Flow delivered a cost-effective, high-quality alternative to heavy and expensive traditional systems.

Case studies

Helping calm Northumbrian waters

Oxford Flow had to provide a valve that managed water pressure effectively during peak and low periods to help manage leakage and provide a reliable service.

Get in touch

By ticking this box I confirm that I have read and agree to Oxford Flows’ Privacy Policy and Terms and Conditions.