Kinney Tuthill Piston Pumps – Legendary Robustness for Decades of Operation

Kinney Tuthill piston vacuum pumps are legendary for their extreme robustn

Kinney Tuthill MD Series – High-Performance Roots Blowers for Vacuum Boosting

Kinney Tuthill Roots booster pumps of the MD series are high-performance vacuum blowers designed to significantly increase the pumping speed of backing pumps and achieve deeper vacuum levels. These robust positive displacement pumps are essential components in demanding industrial vacuum systems.

🚀 What are Roots Booster Pumps?

Roots pumps (also called Roots blowers or booster pumps) are rotary positive displacement pumps with two counter-rotating figure-eight-shaped rotors. They cannot operate alone but must always be used in combination with a backing pump (rotary vane pump, piston pump, or liquid ring pump).

⚙️ Operating Principle:

1. Two synchronized rotors rotate in opposite directions
2. Rotors do not touch each other or the housing (non-contact operation)
3. Gas is trapped between rotors and housing wall
4. Gas is transported from inlet to outlet without compression inside the pump
5. Compression occurs only at the outlet when gas meets backing pump pressure
6. Backing pump removes the gas and maintains the pressure differential

✅ Why Use a Roots Booster?

📊 Kinney Tuthill MD Series – Technical Data:

🔧 Available MD Series Models:

📦 Small MD Boosters (100 - 500 m³/h)

Models: MD-100, MD-200, MD-300, MD-400, MD-500

🏭 Medium MD Boosters (600 - 2,000 m³/h)

Models: MD-600, MD-800, MD-1000, MD-1200, MD-1500, MD-2000

💪 Large MD Boosters (2,500 - 10,000 m³/h)

Models: MD-2500, MD-3000, MD-4000, MD-5000, MD-6000, MD-8000, MD-10000

Available Kinney Tuthill Roots booster models: MD-100, MD-200, MD-300, MD-400, MD-500, MD-600, MD-800, MD-1000, MD-1200, MD-1500, MD-2000, MD-2500, MD-3000, MD-4000, MD-5000, MD-6000, MD-8000, MD-10000, Roots blowers, Roots vacuum pumps, booster pumps, positive displacement pumps, high vacuum boosters, industrial vacuum blowers, multi-stage vacuum systems

🔩 Design Features of MD Series:

⚙️ Construction Components:

✅ Special Features:

• ✓ Non-contact operation – rotors don't touch = no wear in pumping chamber
• ✓ Oil-free pumping chamber – no contamination of process gas
• ✓ External gear lubrication – timing gears run in separate oil bath
• ✓ Precise clearances – 0.1-0.3 mm for optimal performance
• ✓ Balanced rotors – low vibration, quiet operation
• ✓ Modular design – easy maintenance and repair

💡 System Configuration – Booster + Backing Pump:

🔄 Single-Stage Booster System:

Configuration: 1 Roots booster + 1 backing pump

• Increases pumping speed 5-10 times in medium vacuum range
• Cost-effective solution for most applications
• Typical pressure range: 10 - 0.1 mbar

🔄🔄 Two-Stage Booster System:

Configuration: 2 Roots boosters in series + 1 backing pump

• Even higher pumping speeds in low vacuum range
• Deeper ultimate vacuum achievable
• Typical pressure range: 10 - 0.01 mbar
• For demanding high vacuum applications

⚙️ Backing Pump Selection:

🏭 Primary Applications:

⚠️ Important Operating Considerations:

🚨 Critical Points:

• ⚠️ Never start booster without backing pump running!
• ⚠️ Maximum pressure differential must not be exceeded (typically 50-80 mbar)
• ⚠️ Bypass valve required for safe startup and shutdown
• ⚠️ Overload protection necessary to prevent motor overheating
• ⚠️ Proper startup sequence is critical

✅ Startup Sequence:

1. Start backing pump first
2. Wait until backing pump reaches operating vacuum (typically < 30 mbar)
3. Close bypass valve (if manual)
4. Start Roots booster
5. System reaches working vacuum

✅ Shutdown Sequence:

1. Stop Roots booster first
2. Open bypass valve (if manual)
3. Continue running backing pump to vent system
4. Stop backing pump after venting complete

🎛️ Control & Protection Systems:

🔌 Recommended Control Features:

• ✓ Automatic bypass valve – opens at high pressure differential
• ✓ Pressure switch – prevents booster start at too high pressure
• ✓ Temperature monitoring – protects against overheating
• ✓ Motor overload protection – prevents motor damage
• ✓ Interlock system – ensures proper startup sequence
• ✓ Pressure gauges – inlet and outlet monitoring
• ✓ Cooling water flow monitor (for water-cooled models)

🔧 Maintenance & Service:

📅 Maintenance Schedule:

🔧 Common Wear Parts:

• Shaft seals (mechanical face seals or lip seals)
• Bearings
• Timing gears (if worn)
• O-rings and gaskets
• Cooling water seals

📈 Performance Benefits – Before & After:

Without Booster (Backing Pump Alone):

• Pumping speed decreases rapidly below 10 mbar
• Long evacuation times to reach working vacuum
• Limited ultimate vacuum
• Process cycle times longer

With MD Series Booster:

• ✅ Pumping speed maintained down to < 1 mbar
• ✅ Evacuation time reduced by 50-80%
• ✅ Deeper ultimate vacuum achieved
• ✅ Significantly shorter process cycles
• ✅ Higher productivity
• ✅ Better process control

🔧 Our Service for Kinney Tuthill Roots Boosters:

🌟 Why Choose Kinney Tuthill MD Series Roots Boosters?

Need a Kinney Tuthill Roots Booster System?

Whether small MD-100 to MD-500 booster for laboratory and pilot applications, medium MD-600 to MD-2000 booster for production systems, or large MD-2500 to MD-10000 booster for large-scale industrial processes – our Kinney Tuthill experts are happy to advise you.

We design complete booster systems including proper backing pump selection, control systems, and safety interlocks tailored to your specific process requirements.

We also offer professional service and complete overhaul for existing Kinney Roots boosters – restoring performance to factory specifications.

American industrial quality since 1886 – professional local service! Contact us today for expert consultation and vacuum boosting solutions that deliver real performance gains.