Overview
Single packed compressors are typically used in non-toxic, non-corrosive applications where oil-free gas and leakage containment are not critical. LPG (propane & butane), agricultural ammonia, and natural gas applications are where a single packed compressor fits well.
- One packing set per piston rod
- Does not offer oil-free compression
- Utilizes a V-ring packing design (V-rings, a male and female packing ring, washers, and a spring)
- Single stage design only (exception: model 891 offer two-stage compression)
- 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 Class 300 RF 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: PEEK or stainless steel
- Valve spring: Stainless steel
- Pistons: Ductile iron, gray iron, stainless steel
- Piston rings: PTFE (glass and moly filled)
- V-ring packing: PTFE (glass and moly 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: Tapered roller
- O-rings: Buna-N, Neoprene® (Registered trademark of the DuPont)
- All cylinders and heads are made of ductile iron for maximum thermal shock endurance
- A single packed compressor 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 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 (exception: model 891)
- 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
- Agricultural ammonia
- Butane
- Natural gas
- Propane
- And many more
- Vapor recovery
- Liquefied gas transfer
- Pressure boosting
- Tank evacuation
- Rail car loading and unloading
- And many more
For Models 91, 291, 491, 691, and 891