Air Separation Unit
Vanessa Series 30,000 Triple Offset Valve
The Emerson solution for liquid and gaseous oxygen handling, isolation and control
Vanessa Series 30,000 Triple Offset Valve
The Emerson solution for liquid and gaseous oxygen handling, isolation and control
Handling liquid and gaseous oxygen is challenging due to the risk of fire ignition. The industry needs solutions that deliver high level of performance, reliability and long service life while meeting stringent cleanliness requirements.
In and around an Air Separation Unit (ASU), Liquid Oxygen (LOX), a direct product of the cryogenic distillation process, is handled prior to conversion into Gaseous Oxygen (GOX). This occurs in a heat exchanger, following which gaseous oxygen is distributed and used in blast furnace, chemical reactors and many other industrial applications. Often, these services face important reliability issues that impact plant productivity and, more critically, safety: a defective valve can result in a significant accident.
Reliable oxygen service valves must combine suitable material selection with the fulfilment of stringent cleanliness requirements to deliver outstanding isolation and control functions at cryogenic temperatures in LOX and high pressures in GOX.
Rising stems and body cavities in traditional valve designs create risk of external particulate ingress and oxygen phase change with consequent potential for ignition. Furthermore, traditional gate, ball and high-performance butterfly designs experience mechanical friction during sealing which is another possible source of ignition.
Vanessa Series 30,000 for oxygen service combine suitable design features (full metal construction, frictionless quarter turn rotation, metal to metal torque seating) with an optimized material selection to safely deliver outstanding isolation and control functions in critical applications with enriched oxygen atmospheres.
Valves for oxygen applications require stringent level of cleanliness.
The cleaning, inspecting, assembly, testing, protection and labelling of Vanessa TOV for oxygen service are executed in compliance with the relevant product specifications in a designated manufacturing location. All the operations are carried out by expert personnel, specifically trained and equipped.
Rubbing of sealing elements, can be a source of ignition but also results in wear of the sealing components, requiring routine maintenance.
The design of Vanessa Series 30,000 Triple Offset Valve for oxygen service features a frictionless metal to metal torque seating with minimal planned maintenance required.
Traditional ball and gate valves generate high total installation cost (due to their large footprint, heavy weight and high torque actuation required) and significant maintenance cost as well.
Vanessa Series 30,000 TOV features compact footprint and actuation requirements and can significantly reduce installation cost.
Furthermore, with its minimal need for maintenance, Vanessa Series 30,000 TOV can extend plant unit/process uptime and reduce maintenance cost.
Vanessa Series 30,000 Triple Offset Valves for Liquid and Gaseous Oxygen
Triple Offset Valves Design
Vanessa Series 30,000 Triple Offset Valves for Liquid and Gaseous Oxygen
Triple Offset Valves Design
