Plain Style Reciprocating Compressor Overview
Corken’s plain style reciprocating compressors utilize one set of V-ring packing or, a combination of V-ring and segmented packing per packing rod. Neither of these packing arrangements are oil-free designs. If oil-free gas compression is required, Corken’s D-Style and T-Style compressors are recommended. With the exception of the model D891, all D-Styles are oil free. Since the D891 is not an oil-free compressor, it is used in the same applications as our plain style compressor.
Plain style compressors are typically used in non-toxic, non-corrosive applications where oil-free gas is not required and leakage containment is not critical. LPG (propane & butane), agricultural ammonia, and natural gas applications are where a single packed plain style compressor fits well.
Operating Specifications (Note: Since it is not oil free, the D891 is included with the plain style compressors)
- Piston displacements up to 117 cfm (198.8 m3/hr)
- Working pressures up to 450 psi (31.0 bar g)
- Brake horsepower up to 45 hp (34 kW)
- Maximum outlet temperature: 350 °F (177 °C)
- A plain style configuration has one packing set per piston rod and is not oil free
- Utilizes V-ring packing construction that consists of several V-rings, a male and female packing ring, washers, and a spring
- Single stage design only
- Four single-acting models (91, 291, 491 & 691) and one double-acting D891
- Cylinder sizes are 3.0″, 4.0″, and 4.5″
- Available with NPT or ANSI flange connections
- Head and cylinder: Ductile iron
- Crosshead guide, crankcase, flywheel and bearing carrier: Gray iron
- Valve seat and bumper: stainless steel or ductile iron
- Valve plate: Stainless steel
- Valve spring: Stainless steel (Inconel available on some models)
- Pistons: Ductile iron, gray iron, stainless steel
- Piston rings: PTFE (glass and molly filled)
- V-ring packing: PTFE (glass and molly filled)
- Packing cartridge: Ductile Iron
- Crankshaft: Ductile iron
- Connecting rod: Ductile iron
- Connecting rod bearing: Bimetal Babbitt
- Wrist pin: Steel
- Wrist pin bushing: Bronze
- Main bearing: Tampered roller
- Retainer rings: Buna-N, Neoprene®. Registered trademark of the DuPont company.
- All cylinders and heads are made of ductile iron for maximum thermal shock endurance
- The plain style packing configurations is a great low cost option for applications where oil-free gas and leakage containment are not critical
- Valve design offers quiet operation, high efficiency and greater durability
- The step-cut design of the self-lubricating piston rings provides higher efficiencies during the entire life of the piston ring
- Positively locked pistons allows end clearance to be precisely set to provide maximum efficiency and long life
- Packing sets are a spring loaded seal design that self adjusts to compensate for normal wear
- Adjustable packing screw ensures maximum sealing capacity throughout the life of the packing
- Cast iron crossheads provide superior resistance to corrosion and galling
- Pressure-lubricated crankcase with filter keeps the internals well lubricated at all times and minimizes premature wear
- Air
- Agricultural ammonia
- Butane
- Propane
- Natural gas
- And many more
- Vapor recovery
- Liquefied gas transfer
- Pressure boosting
- Tank evacuation
- Rail car loading and unloading
- And many more