KT-800 High Vacuum Oil Diffusion Pump
The KT-800 is a high-performance, oil diffusion pump engineered to achieve ultimate vacuum levels essential for industrial and scientific applications. As part of the KT series, this pump utilizes a convex nozzle (convex cavity) design to significantly enhance pumping speed and efficiency compared to traditional flat-structure pumps. It is designed to operate as the primary high-vacuum stage in systems requiring clean, reliable, and high-throughput evacuation, typically backed by a rotary vane or roots pump as the foreline.
Key Features
- High Pumping Speed: Delivers an ultra-fast pumping speed of ≥ 24,000 L/s for air, making it ideal for large vacuum chambers and processes with high gas loads .
Ultimate Pressure: Capable of achieving an ultimate partial pressure of ≤ 5 × 10⁻⁵ Pa (7 × 10⁻⁵ Pa depending on fluid and conditions), providing the deep vacuum required for critical processes . - Convex Nozzle Design: The advanced convex nozzle structure optimizes steam flow and increases the pumping speed by approximately 30% compared to conventional K-series pumps.
- Robust Construction: Features a heavy-duty, corrosion-resistant metal body (stainless steel or carbon steel) with reinforced structural ribs, ensuring durability and longevity in demanding industrial environments .
- High Foreline Tolerance: With a critical foreline pressure of ≥ 40 Pa, the KT-800 offers flexibility in foreline pump selection and stable operation against exhaust pressure fluctuation.
Applications
The KT-800 Diffusion Pump is widely used in processes that require high-speed evacuation of large volumes, including:
- Vacuum Metallurgy: Steel degassing, vacuum smelting, and heat treatment furnaces.
- Vacuum Coating: Physical Vapor Deposition (PVD) and sputtering systems for architectural glass, automotive parts, and optics .
- Aerospace Testing: Space environment simulation chambers and rocket engine test stands .
- Semiconductor Manufacturing: Vacuum systems for etching, doping, and thin-film deposition .
- Research & Development: Large particle accelerators and nuclear fusion research devices.
Installation & Operation
- Mounting: The pump features a standard inlet flange for vertical installation. Ensure proper support due to the unit's significant weight.
- Foreline Requirement: A suitable backing pump (recommended 300 L/s) must be connected to the foreline port to maintain the critical foreline vacuum level .
- Cooling System: Adequate water cooling (approx. 1200-1860 L/h) is mandatory to dissipate heat from the pump body and prevent oil back-streaming .
- Heating: The pump requires a controlled heating element (15-16 kW) to vaporize the pump oil. Do not energize the heater until the cooling system is active and the foreline vacuum is established.
KT-800 offers an optimal balance of high throughput and low ultimate pressure. Its robust metal construction and CE-certified compliance ensure safety and reliability in continuous operation. Compared to turbomolecular pumps, it provides a cost-effective solution for achieving high vacuum in extremely large chambers without moving parts, resulting in lower vibration and maintenance requirements.