Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Power Transmission

Gear drives, bearings, motors, clutches, couplings, machine controls, sensors and components.

Machine Design

How-to, in-depth technical articles for machine design engineers

Design-2-Part

How OEM's can make their parts better, faster, and more efficient.

more free magazines
A vacuum device or a vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum.

Vacuum devices can be broadly categorized according to three techniques:

  • Positive displacement pumps use a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere.
  • Momentum transfer pumps, also called molecular pumps, use high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber.
  • Entrapment pumps capture gases in a solid or adsorbed state. This includes cryopumps, getters, and ion pumps.
  • Others such as Venturi vacuum pumps and Steam ejectors
 11 companies matched 
* Precision Brass parts Components India
Brass Neutral links Neutral Bars Brass Terminals Terminal Blocks Brass Electrical Pins Socket Pins Brass Lamp Parts lamp Components  Brass CNC parts CNC...
A Brass anchors Brass Fasteners Brass Anchor fasteners india
Brass Anchors Anchor fasteners Screws
Aalka Brass inserts India
Brass moulding inserts Brass tank connectors
Anping XieDa Shaped Wire Co., Ltd.
shaped wires, galvanized oval wires, triangle wires, square wires, wedge wires, archwire
Brass Castings Copper Casting Brass foundry india
Brass casting Copper casting bronze casting fittings india
Brass Copper Fittings
Brass Copper Fittings Copper Turned Parts   Copper Fittings   Copper Pressed Parts   Copper Casting   Bronze Fittings   Copper Washers ...
Brass Parts Stainless Steel Turned parts india
Brass turned parts stainless steel parts fittings turned components
Brass Pipe Fittings
Brass pipe fittings hsoe couplings Brass hose barbs
ECIMOS, LLC
Automated Run Test, Interactive Visual Work Instructions, Refrigerant Charge Board, Hardware Software Integration, Manufacturing Operating System, Helium Leak Testing, Assembly Line Watch Dog 
Stainless Steel Fittings Stainless Steel parts India
Stainless Steel Parts Stainless Steel fittings Stainless Steel hose barbs India manufacturers hose fittings  Brass Nuts Brass fasteners Stainless Steel fittings
Toppo Lighting Company Limited
LED Tube Lights & LED Tri-proof Lights
Glossary