COMPRESSED AIR

Airometrix Manufacturing Co. — Air Compressor Performance evaluation equipment
Atlas Copco — Compressor Manufacturer and related equipment
Energy Information Administration
Gardner Denver — Compressor Manufacturer and related equipment
Ingersoll-Rand — Compressor Manufacturer: Compressed Air Safety Nets: A Guide To Predictive Maintenance Programs 
Kaeser Compressors — A Leading Innovator in Air System Technologies 
Sullair — Compressor Manufacturer and related equipment
United States Department of Energy — Best Practices for Compressed Air

STEAM

Armstrong International, Inc. — Manufacturer of Steam Traps and related equipment. Training classes.
Enercheck Systems, Inc. — Steam and Steam Trap Audits
Energy Information Administration
Spence Engineering Company, Inc. — Manufacturer of Steam Traps and related equipment. Training classes.
Spirax Sarco — Manufacturer of Steam Traps and related equipment
Swagelok — Manufacturer of Steam Traps and related equipment
United States Department of Energy — Best Practices for Steam
Yarway — Manufacturer of Steam Traps and related equipment

LEAK SEALING

Colt Atlantic Services — High Temperature Leak Sealants
InduMar Products, Inc. — Leak Sealing Systems
Loctite — Leak Prevention, Sealants, Adhesives & Coatings and Training Courses

INFRARED

FLIR Infrared Camera Systems — FLIR is the global leader in infrared cameras, IR software, thermography training and support.
FLIR — Thermal Imaging Cameras & Training
Indigo Systems — Thermal Imaging Cameras
Infraspection Institute — Training Courses for Certification in Infrared
Mikron Instruments — Thermal Imaging Cameras
MSA — Thermal Imaging Camera
Snell Infrared — Training Courses for Certification in Infrared

VIBRATION

Entek IRD International Corporation — Vibration Analysis Instrumentation & Software
SKF Condition Monitoring — Vibration Analysis Instrumentation & Software
Stethoscope Directory — This Stethoscope Directory designed to help its users find the stethoscope information, source, companies, products and services... It's your one-stop destination for anything you can think about stethoscope.

HYDRAULICS

Insider Secrets to Hydraulics — FREE Newsletter Containing Valuable Technical Information for Anyone with an Interest in Hydraulics.