Blackmer heavy-duty process compressors provide efficient, quiet delivery of oil-free gas or air. These heavy-duty single and two-stage compressors combine advanced design technology and state-of-the-art materials to give maximum performance with minimum maintenance.

These compressors are well-suited for handling a wide range of industrial gases, including propane, butane, butadiene, propylene, vinyl chloride and chemical intermediates, as well as many others, such as ammonia, carbon dioxide, refrigerants, air and nitrogen.

Application Flexibility:

• Liquefied Gas Transfer
• Gas Gathering
• Gas Transfer
• Gas Evacuation
• Gas Blanketing
• Propellant/Vapor Recovery
• Pressure Boosting
• Heavy-Duty Construction

• High-Efficiency, PEEK Valves
• Live Loaded Piston Rod Seals
• Single and Double Distance Piece
• Heavy-Duty Precision
• Ground Crankshaft
• Ductile Iron Construction
• One-Piece Piston

Models Available:

• Single- and Two-Stage - Single-stage models are available in 7 sizes with piston displacements to 125 cfm (212 m3/hr) and working pressures to 765 psia (52.74 bar) for use on low to moderate compression ratio applications. Three sizes of two-stage models are available for higher compression ratio requirements.


• Air-Cooled and Liquid-Cooled - The HD air-cooled models are suitable for most PD pumps that do not use gearboxes, especially for operation at lower compression ratios and for liquefied gas transfer applications. HDL models have a liquid-cooled head and cylinder for more demanding applications.


• Single, Double and Triple Seal - The standard double-seal models are constructed with a single distance piece between two sets of piston rod seals. The distance piece provides leakage control and prevents oil contamination of the compressed gas stream. Triple-seal models use two distance pieces for maximum leakage control and are well suited for handling toxic, hazardous or corrosive gases. Ports are provided in each distance piece chamber for purging, pressurizing,or venting. Single-seal models are also available.

Heavy-Duty Construction:

• High-Efficiency, PEEK Valves
• Live Loaded Piston Rod Seals
• Single and Double Distance Piece

• Heavy-Duty Precision Ground Crankshaft
• Ductile Iron Construction
• One-Piece Piston