Blackmer has taken the concerns regarding vapor recovery and product contamination in oil-and-gas field applications into consideration by applying their proven distance piece design technology in its HD and HDS Series Oil-Free Reciprocating Gas Compressors.
The non-lubricated (oil-free) design of the HD and HDS models includes a full distance piece compartment between the compressor s cylinder and crankcase. External ports are located at the top and bottom of the distance piece chamber that can be used for purging, pressurizing or venting. This provides the compressor s user maximum leakage control of any vapors that would normally vent into the crankcase uncontrollably with other designs. It also allows for control of potentially harmful vapors to a recovery tank, safe disposal area or flare system before they can escape to the atmosphere.
Blackmer HD and HDS Series Reciprocating Gas Compressors, which are available in either single- or two-stage configurations, have been designed for maximum performance and reliability under the most severe operating conditions. They are equipped with high-efficiency ductile-iron valves with PEEK valve plates, ductile-iron head and cylinders, two sets of self-adjusting filled PTFE packing sets on each piston rod for maximum leakage control, self-lubricating TFE piston rings, a precision-ground crankshaft and a pressure-lubricated crankcase. The non-lubricated design means no lubricating oil is used in the upper cylinder or head area where it could add additional contaminate to the gas stream.
