Oberdorfer N991R-32-A89 Gear Pump 3/8 Rv 24V  

Oberdorfer 10021B Gear Pump  

Oberdorfer N991 Gear Pump Peo 1/4" Brz Buna  Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.   Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the discharge line. Shaft speed and flow are directly proportional.   Recommended pressure limits are 100 PSI for water and non-lubricants, 150 PSI for oil and other lubricants. The maximum shaft speed is 1750 RPM. Close-coupled gear pumps are normally supplied with a Nitrile lip seal. A lip seal made of fluoroelastomer is available as an option. For a fluoroelastomer Seal, add S5 to the pump model number.   FEATURES Rugged corrosion resistant bronze construction Compact close-coupled design Stainless steel shafts Durable bronze spur gears Process lubricated carbon graphite bearings O-ring cover seal for maximum leak protection Nitrile Lip Seal -standard Easy field assembly to a variety of motor frames For typical DC motor pump units - see N991-32 DC For compact AC motor pump units - see Close Coupled Bronze Adapterless Rotary Gear Pumps For bronze pedestal pumps and mechanical seal styles - see model N1000 DRIVE Close-coupled pumps are mounted directly to the electric motor by means of a suitable adapter bracket. The pump drive shaft is connected to the motor shaft by a flexible coupling.   LIQUIDS & TEMPERATURES These pumps are suitable for all liquids that are compatible with bronze. Most common liquids are water, oil, and mild chemicals in the pH range of 4 to 11. Viscous liquids require reduced shaft speeds of 1150 RPM or lower. (Consult factory.) Liquids containing solids, abrasives, powders, or paint pigments are definitely not recommended for gear pumps. If abrasives are unavoidable, use a very low shaft speed. The recommended liquid temperature range is from 32o F to 140o F for best pump life. If more extreme temperature conditions exist, factory should be consulted. Freezing of water-filled pumps can cause damage and must be avoided. Oils at low temperatures are very viscous requiring a lower speed or extra power.   SUCTION LIFT As a general rule, the suction lift should be kept at an absolute minimum by placing the pump as close to the liquid source as possible. A gear pump in new condition can lift 20 feet of water in the suction line. A foot valve (preferably with built-in strainer) is recommended at the beginning of the suction line. For a first start-up, the pump should be primed to avoid dry running. Minimum size of the suction pipe is the size of the pump inlet port. For longer suction lines (over 3 feet) or for viscous liquids, the pipe should be at least one size or two sizes larger than the pump inlet port.

Oberdorfer N992 Gear Pump Peo Brz 3/8" Buna Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life. Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid  relatively unaffected by the back pressure in the discharge line. Shaft speed and flow are directly proportional. Recommended pressure limits are 100 PSI for water and non-lubricants, 150 PSI for oil and other lubricants. The maximum shaft speed is 1750 RPM. FEATURES Rugged Corrosion Resistant Bronze Construction Compact Close-Coupled Design Stainless Steel Shafts Durable Bronze Helical Gears Provide Quiet Operation Process Lubricated Carbon Graphite Bearings O-Ring Cover Seal For Maximum Leak Protection Lip Seal or Mechanical Seal Easy Field Assembly to a Variety of Motor Frames - For Typical DC Motor Pump Units - see N992 DC For Compact AC Motor Pump Units. See Close Coupled Bronze Adapterless Rotary Gear Pumps. For Danfoss Hydraulic Motor Driven Pump Units. See Adapter 9960 For Bonze Pedestal Pumps. See Model N2000 For Close-Coupled Ductile Iron Pumps - See Model C992 LIQUIDS & TEMPERATURES These pumps are suitable for all liquids that are compatible with bronze. Most common liquids are water, oil, and mild chemicals in the pH range of 4 to 11. Viscous liquids require reduced shaft speeds of 1150 RPM or lower. (Consult factory.) Liquids containing solids, abrasives, powders, or paint pigments are definitely not recommended for gear pumps. If abrasives are unavoidable, use a very low shaft speed. See price book for the recommended liquid temperature range of lip and mechanical seals. If more extreme temperature conditions exist, factory should be consulted. Freezing of water-filled pumps can cause damage and must be avoided. Oils at low temperatures are very viscous requiring a lower speed or extra power. SUCTION LIFT As a general rule, the suction lift should be kept at an absolute minimum by placing the pump as close to the liquid source as possible. A gear pump in new condition can lift 20 feet of water in the suction line. A foot valve (preferably with built-in strainer) is recommended at the beginning of the suction line. For a first startup, the pump should be primed to avoid dry running. Minimum size of the suction pipe is the size of the pump inlet port. For longer suction lines (over 3 feet) or for viscous liquids, the pipe should be at least one size or two sizes larger than the pump inlet port. If the discharge line contains any throttling devices such as a shut-off valve, a spray nozzle or other restrictive device, it is necessary to have a relief valve in the system, which returns the liquid to the suction side or to the tank. The relief valve is also available as part of the pump itself (R-model pumps). However, built-in relief valves are only good for intermittent service. If used continuously, the pump will overheat. A built-in relief valve is strictly a safety device against overpressure. It will not work successfully as a pressure or flow control device. For this purpose a separate relief valve in the pressure line must be used. Unless otherwise specified, the pump motor unit is supplied by the factory for shaft rotation counterclockwise from shaft end. Reversing motor will reverse “in and “out” ports and also requires changing relief valve location. The relief valve is always on the inlet side of this pump series. The factory pressure setting is 50 PSIG. To increase pressure, turn the relief valve adjusting screw in a clockwise direction.    

Oberdorfer N993 Gear Pump Peo 1/2" Buna Lip Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbon graphite material selected for wear resistance and long service life. Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the back pressure in the discharge line. Shaft speed and flow are directly proportional. Recommended pressure limits are 100 PSI for water and non-lubricants, 150 PSI for oil and other lubricants. The maximum shaft speed is 1750 RPM.   FEATURES Rugged corrosion resistant bronze construction Compact close-coupled design Stainless steel shafts Durable bronze helical gears provide quiet operation Process lubricated carbon graphite bearings O-ring cover seal for maximum leak protection Nitrile Lip Seal -standard Easy field assembly to a variety of motor frames For compact AC motor pump units - see Close Coupled Bronze Adapterless Rotary Gear Pumps For Danfoss hydraulic motor driven pump units - see adapter 9960 For bronze pedestal pumps and mechanical seal styles - see model N3000 For close-coupled ductile iron pumps - see model C993 DRIVE Close coupled pumps are mounted directly to the electric motor by means of suitable adapter bracket. The pump drive shaft is connected to the motor shaft by a flexible coupling.   LIQUIDS & TEMPERATURES These pumps are suitable for all liquids that are compatible with bronze. Most common liquids are water, oil, and mild chemicals in the pH range of 4 to 11. Viscous liquids require reduced shaft speeds of 1140 RPM or lower. (Consult factory.) Liquids containing solids, abrasives, powders, or paint pigments are definitely not recommended for gear pumps. If abrasives are unavoidable, use a very low shaft speed. The recommended liquid temperature range is from 32o F to 140o F for best pump life. If more extreme temperature conditions exist, factory should be consulted. Freezing of water-filled pumps can cause damage and must be avoided. Oils at low temperatures are very viscous requiring a lower speed or extra power.   SUCTION LIFT   As a general rule, the suction lift should be kept at an absolute minimum by placing the pump as close to the liquid source as possible. A gear pump in new condition can lift 20 feet of water in the suction line. A foot valve (preferably with built-in strainer) is recommended at the beginning of the suction line. For a first start-up, the pump should be primed to avoid dry running. Minimum size of the suction pipe is the size of the pump inlet port. For longer suction lines (over 3 feet) or for viscous liquids, the pipe should be at least one size or two sizes larger than the pump inlet port.

Oberdorfer N999 Gear Pump Peo 1/4" Brz Buna  Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the back pressure in the discharge line. Shaft speed and flow are directly proportional. Recommended pressure limits are 100 PSI for water and non-lubricants, 150 PSI for oil and other lubricants. The maximum shaft speed is 1750 RPM FEATURES Rugged corrosion resistant bronze construction Compact close-coupled design Stainless steel shafts Durable bronze spur gears Process lubricated carbon graphite bearings O-ring cover seal for maximum leak protection Nitrile Lip Seal -standard Easy field assembly to a variety of motor frames For compact AC motor pump units - see Close Coupled Bronze Adapterless Rotary Gear Pumps For mechanical seal styles - see carbonator style - model N95060 DRIVE Close coupled pumps are mounted directly to the electric motor by means of a suitable adapter bracket.  The pump drive shaft is connected to the motor shaft by the flexible coupling. LIQUIDS & TEMPERATURES These pumps are suitable for all liquids that are compatible with bronze. Most common liquids are water, oil, and mild chemicals in the pH range of 4 to 11. Viscous liquids require reduced shaft speeds of 1150 RPM or lower. (Consult factory.) Liquids containing solids, abrasives, powders, or paint pigments are definitely not recommended for gear pumps. If abrasives are unavoidable, use a very low shaft speed. The recommended liquid temperature range is from 32o F to 140o F for best pump life. If more extreme temperature conditions exist, factory should be consulted. Freezing of water-filled pumps can cause damage and must be avoided. Oils at low temperatures are very viscous requiring a lower speed or extra power.  SUCTION LIFT As a general rule, the suction lift should be kept at an absolute minimum by placing the pump as close to the liquid source as possible. A gear pump in new condition can lift 20 feet of water in the suction line. A foot valve (preferably with built-in strainer) is recommended at the beginning of the suction line. For a first start-up, the pump should be primed to avoid dry running. Minimum size of the suction pipe is the size of the pump inlet port. For longer suction lines (over 3 feet) or for viscous liquids, the pipe should be at least one size or two sizes larger than the pump inlet port.  

Oberdorfer S21417CB SS Pump Tef Grs Cbn Brg  CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.

Oberdorfer S21417Pb SS Pump Tef Grs Cbn Brg  CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.

Oberdorfer S21416CB SS Pump W88 Grs Cbn Brg  CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.

Oberdorfer S21417Cc SS Pump Tef Grs Cbn Brg  CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.

Oberdorfer S2141Fpc SS Pump SS/Tf Grs Cbn Brg  CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.

Oberdorfer S21416CC SS Pump W88 Grs Cbn Brg   CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.  

Oberdorfer S21435Cd Alloyc Alc/Tef Grs Cbn Brg  CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.

OBERDORFER N9000L PEDESTAL MOUNT GEAR PUMP Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are made of high performance carbon-graphite material selected for wear resistance and long service life. Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the discharge line. Shaft speed and flow are directly proportional.   DRIVE Either direct drive with flexible coupling or pulley drive can be used. Make sure both flexible coupling halves are properly aligned. When using a pulley, do not over tighten the belt. Also, to absorb belt side thrust at higher pressures and larger size pumps, an external ball bearing support is recommended - consult factory.   LIQUIDS & TEMPERATURES Service life will be increased substantially if the liquid pumped is clean and has some degree of lubricity. These positive displacement pumps have tight tolerances. Fine abrasives like sand, silt, or powders in suspension will accelerate pump wear and reduce throughput. Liquids compatible with bronze and stainless steel can be pumped providing proper seal has been specified (see chemical compatibility or check factory). When possible, flush the pump after each usage. Temperature extremes are detrimental to service life and should be avoided. Basic metals of construction allow a temperature range of -40°F to 400°F. Some lip and mechanical seal elastomers have a limit of 212°F. Allowing a liquid to freeze in the pump can cause damage.   SUCTION LIFT Close tolerances and the positive pumping action make the rotary gear pump capable of lifting water on the suction side as high as 20 feet. Though gear pumps are self priming, a foot valve is recommended. If possible, wet the gears with liquid to be pumped for the first dry start. Liquid retained in the system and gear chambers serves to “wet” the pump on subsequent starts.

OBERDORFER S21416CZ SS PUMP W88 GRS CBN BRG   CHEMSTEEL™ pumps are designed to handle common and highly corrosive liquids that must be pumped under pressure. Manufactured to extremely precise tolerance, the CHEMSTEEL™ pump line prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Its rugged, three-section, O-ring sealed thru-bolt construction provides ease of servicing and parts replacement. Helical gearing offers noise reduction by as much as 10db, while the tandem pumps double the output flow for a single fluid, or with isolation, handle other fluids in direct ratio to the first Additionally, CHEMSTEEL™ pumps offer bi-directional operation for applications requiring reversing flow.   FEATURES Gear/bearing design allows for “trimming” for optimizing the pump’s maximum flow to reach minimum turndown or to match flow to a specific OEM’s requirement.   Special materials combinations are available for specific liquids:   Stainless or Alloy C housing construction. Gears available in 316 stainless,. W88 stainless and Alloy C. Also in Polytetrafluoroethylene, polyphenylenesulfide and polyetheretherketone. Shafts are 316 stainless steel or Alloy C. Bearings available in carbon or polytetrafluoroethylene. Full range of seal options including lip seal, packing and mechanical designs.   DRIVE The pump is driven directly from the electric motor shaft by means of a flexible coupling.  A close-coupled adapter connects the pump to the motor.   LIQUIDS & TEMPERATURES This pump is suitable to handle clear lubricating and non-lubricating fluids at temperatures to 450F.  These pumps will handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds.   SUCTION LIFT This pump has a suction lift capability of 20 feet for a new pump.  Though gear pumps are self-priming, a foot valve is recommended.  If possible, wet gears with the liquid to be pumped for the first dry start.  Liquid retained in the system and gear chambers serves to wet the pump on subsequent starts.