Five decades of precision, quality and engineering excellence….
Established in 1971, New Field is a specialist in ejector and vacuum technology, delivering reliable vacuum systems that help customers improve process performance, operational efficiency and long-term profitability. Our systems are engineered for demanding industrial applications and designed to meet customer-specific process requirements with precision and reliability.
In addition to ASME U, S, NB and R certifications, New Field regularly delivers systems in compliance with CE-PED, EAC / CU-TR , CRN, NDT Certification, CCOE, TÜV Module A1, DOSH, IBR and AS1210 requirements. Our customer-focused management approach is built around delivering practical value, dependable performance and engineered solutions that meet the evolving needs of global companies such as Siemens, Doosan Skoda Power, Tecnimont, G.E, Mitsubishi, Doosan, Alstom Power, Peter Brotherhood, Alderley, Hyundai, Toyo, Linde, Thermax, ONGC, EIL, Sulzer, ADNOC, KNPC, Petronas, Petrobras, Foster Wheeler, Flour, Toshiba, MAN, Metka, ThyssenKrupp, Enexio, SPG, Valmet, etc.
New Field continues to strengthen its international presence through diversified sales channels and strategic partnerships with leading global companies across the power, oil and gas, chemical, petrochemical and industrial sectors.
Deep vacuum capability
New Field has supplied five-stage ejector systems capable of achieving vacuum levels down to 0.05 mm Hg abs. at full load. Five-stage and six-stage ejector systems can be designed for absolute pressures in the micron range, in accordance with customer requirements.
New Field offers a comprehensive range of ejector and vacuum systems for industrial process applications.
Steam Jet Ejector Systems – single-stage and multi-stage | Steam Jet Air Ejector Systems (SJAE) |
Vacuum Degassing Systems | Booster, Ejector and Vacuum Pump Combination Systems with Intercondensers |
Multi-Stage Steam Jet Vacuum Systems with Surface Condensers or Mixing Condensers | Thermocompressors |
Hybrid Vacuum Systems | Air Jet, Vapour Jet and Gas Jet Ejectors |
Sulphur Pit Ejectors | Single and Double Stage Liquid Ring Vacuum Pumps |
Tank Mixing Systems | Steam Jet Heaters |
Liquid Jet Ejectors | Static Mixers |
Eductors | Syphons |
Efficient vacuum generation for industrial processes
New Field steam jet ejectors are designed to generate efficient vacuum using high-pressure steam as the motive fluid. These ejectors are suitable for a wide range of industrial processes where dependable vacuum creation is essential.
Available in single-stage and multi-stage configurations, New Field steam jet ejectors deliver robust performance, reliable operation and efficient vacuum generation across complex industrial environments. Each system is carefully engineered to provide a dependable and energy-conscious vacuum solution tailored to the requirements of the application.
Steam jet ejectors are among the simplest and most reliable devices used for vacuum operation. A typical ejector consists of a nozzle that discharges a high-velocity jet across a suction chamber connected to the equipment being evacuated.
Advantages of New Field Steam Jet Ejectors:
Product-Specific Features:
New Field’s Ejector Division provides specialised and innovative ejector vacuum technologies for the power generation, oil and gas, chemical, petrochemical, cement, sugar, edible oil refinery and industrial markets worldwide.
Our systems play a critical role in improving operational reliability, process safety and plant efficiency. By combining proven engineering principles with practical application expertise, we help customers solve complex process challenges and achieve their core operational objectives.
The operating principle of a steam jet ejector is based on the conversion of pressure energy into kinetic energy. High-pressure motive steam passes through a nozzle, where its pressure energy is converted into a high-velocity jet. This high-velocity steam entrains the gas or vapour being evacuated from the process.
The resulting mixture then enters a diffuser, where velocity energy is converted back into pressure energy. As a result, the discharge pressure of the mixture becomes significantly higher than the suction pressure, while remaining lower than the motive steam pressure.
A single-stage steam ejector has a limited compression capability and performs most efficiently within a specific compression ratio. Where higher compression ratios are required, two or more ejectors can be arranged in series, reducing the compression requirement across each stage.
For applications requiring higher gas-handling capacity, multiple ejectors may also be arranged in parallel. These systems can be configured as single-stage or multi-stage arrangements, depending on the required vacuum level, process load and operating conditions.
Steam jet ejectors are widely used across vacuum processing applications due to their operational simplicity, reliability and cost efficiency. They are suitable for a wide variety of equipment, including stills, vacuum deaerators, evaporators, crystallisers, oil deodorisers, steam vacuum refrigeration systems, flash coolers, condensers, vacuum pan dryers, dehydrators, vacuum impregnators, freeze dryers and vacuum filters.
They are also used in specialised applications such as stream degassing of metals and vacuum melting of metals.
Steam jet ejectors offer strong operational and economic advantages across a broad range of pumping capacities. Corrosive applications can be effectively handled by selecting suitable materials that provide the required corrosion resistance and structural strength at the operating temperatures involved.
Vacuum system performance is influenced by several key factors, including:
A well-designed ejector typically operates most efficiently between approximately 50% and 115% of its design capacity. Operation beyond this range may be possible, although efficiency will generally reduce outside the optimum design window.
Cooling water temperature also has a significant impact on ejector capacity. Colder condensing water can increase system capacity, while warmer water can reduce performance. This effect becomes especially important in ejectors designed for low absolute pressure applications.
Steam pressure has a direct effect on ejector performance and system capacity. Higher motive steam pressures can allow larger capacities for a given steam consumption, particularly in single-stage and two-stage ejector systems.
However, the benefit of higher steam pressure becomes less significant as the required absolute suction pressure decreases. For efficient operation, the motive steam should be at least dry saturated steam. Where moisture is present, a properly sized steam separator can be used to remove a high percentage of entrained moisture before the steam enters the ejector.
For certain applications, water jet ejectors may be combined with steam jet ejectors to create compact and efficient vacuum pumping systems. In such arrangements, the water jet ejector can act as both an intercondenser and a final-stage ejector, providing an economical solution where the non-condensable gas load is relatively low compared with the condensable vapour load.
When selecting a vacuum system, both capital investment and operating costs must be considered. In power plant applications, for example, the behaviour of the complete plant must be assessed as operating conditions change.
If the amount of non-condensable gas increases, each gas extraction system responds differently. Steam ejectors may require increased motive steam consumption, while compressors and liquid ring vacuum pumps increase auxiliary power consumption.
For plants requiring a fixed power output, auxiliary energy demand can influence turbine sizing and overall plant economics. Steam ejectors draw operating energy from steam rather than directly from generated electrical power, whereas compressors and liquid ring vacuum pumps consume electrical power from plant output. This distinction can have a significant impact on total lifecycle cost, particularly where the cost of steam and electricity differs.
When specifying ejector equipment, it is important to provide complete process and operating data to ensure accurate system selection and design. The more information available to the manufacturer, the more effectively the ejector system can be engineered for the application.
Key information typically required includes:
Providing the application details is especially important, as many design considerations become clearer when the process duty and operating environment are properly understood.
New Field designs and manufactures a complete range of steam jet ejector configurations to suit different vacuum requirements and process conditions.
| Configuration | Typical Use / Capability |
|---|---|
| Single-Stage Steam Jet Ejectors | Ideal for moderate vacuum levels, typically achieving around 40 mm Hg abs., depending on process conditions and motive steam availability. |
| Two-Stage Ejectors with Intercondensers | Designed for lower pressure requirements below 4 in. Hg abs. The intercondenser improves efficiency by condensing vapours between ejector stages and reducing the load on subsequent stages. |
| Three-Stage Ejectors with Intercondensers | Used for vacuum requirements typically ranging from 5 mm Hg abs. to 15 mm Hg abs., with multiple ejector units and intermediate condensers for improved performance and reduced steam consumption. |
| Four-Stage Ejectors with Intercondensers | Capable of achieving vacuum levels as low as 0.5 mm Hg abs., making them suitable for high-demand industrial processes requiring deep vacuum performance. |
| Five and Six-Stage Steam Jet Ejectors | Designed for ultra-high vacuum applications in the micron range, providing maximum performance, stability and precision for highly demanding process applications. |
| Parameter | Details |
|---|---|
| Materials of Construction | Stainless steel, carbon steel and cast iron, with corrosion-resistant alloy options available based on application requirements. |
| Pressure Range | From 0.5 mm Hg abs. to atmospheric pressure, depending on the number of stages and process conditions. |
| Operating Temperature | Up to [insert temperature] °C, subject to material compatibility and application requirements. |
| Main Components | Steam nozzle, diffuser, suction chamber, adaptor, steam chest body and strainer. |
| Customisation | Available with direct contact condensers or surface-type condensers based on application needs. |
| Industry | Typical Applications |
|---|---|
| Petrochemicals and Refineries | Used for vacuum distillation, gas scrubbing, vapour recovery and process vacuum applications. |
| Pharmaceuticals | Applied in drying, filtration, distillation and vacuum processing operations. |
| Chemical Manufacturing | Used for evaporation, absorption, gas purification and process vacuum duties. |
| Food and Beverage Processing | Applied in deodorisation, drying, concentration and other vacuum-assisted operations. |
| Power Generation | Used in cooling systems, condenser evacuation and vacuum creation for steam turbine applications. |
| Steel and Metallurgy | Used in vacuum-based processes for refining, degassing and treating metals. |
New Field combines proven ejector technology, advanced engineering capability and application-specific design expertise to deliver vacuum systems that perform reliably in real-world operating conditions. From single-stage ejectors to complex multi-stage hybrid vacuum systems, every solution is engineered for safety, efficiency, durability and long-term process value.
