Mechanical Seals:

The mechanical sealing on the rotor shafts and drive shaft ensures reliable operation. The mechanical seals include:

• Water-cooled drive shaft seal (excluding motor mounting flange versions).
• Cooling coils in the end covers, contributing to better thermal management.

Slinger Seals:

These boosters are also available with slinger seals, which:

• Use a combination of mechanical drive shaft seals and a non-contacting, non-wearing slinger seal for enhanced durability.
• Suitable for air and various gas applications.
• Do not include cooling coils.

Low Mechanical Noise:

The M-D Pneumatics™ vacuum boosters are engineered to operate at 82 dB(A) or lower at blank-off, excluding motor and background noise. This ensures minimal noise pollution during operation.

Special Materials:

The standard construction materials include:

• Cast iron housing, end plates, and end covers.
• Ductile iron rotors and shafts. Special materials are available for certain models:
• Stainless steel
• Carbon steel
• Ductile iron
• Bi-Protec® Nickel/Armoloy® coating for additional durability.

Optional Motor Mounting Flanges:

These boosters are designed to be compatible with optional flange adapters, allowing the direct mounting of:

• NEMA C-face motors (up to 75 HP)
• IEC D-flange motors (up to 55 kW) This eliminates the need for separate base-mounted assemblies and coupling guards, simplifying installation and maintenance.

• ASME PTC-9 testing (1 PSIG slip method).
• Hydrostatic testing to 150 PSIG (10.35 bar g).
• Pressure gas testing to 100 PSIG (6.9 bar g).
• Seal leakage testing for reliability.

• Supercharging Vacuum Pumps
• Increasing Vacuum System Capacities
• Reducing System Ultimate Pressures