Oberdorfer 1000-68 Pump  

Oberdorfer 300B Series Self Priming Centrifugal Pump FEATURES Pump Body: Bronze Ports: 1" NPT Flow: 22 GPM Max Pressure: 15 PSI Max, 35 feet of head Impeller: Centrifugal Shaft Seal: Mechanical Buna Seal Standard, Viton or Teflon Optional Shaft: Stainless Steel Standard, Monel Optional Motor / Drive: Attaches to NEMA C flange jet pump motors with threaded shaft of stainless steel or monel. We can supply additional motors and assemble if required.     APPLICATIONS / CHARACTERISTICS This close coupled style bronze self-priming centrifugal pump is equipped with high quality ball bearings permanently filled with grease for maintenance free operation.  The main shaft seal is a mechanical face type seal of proven reliability.  Unlike positive displacement pumps centrifugal pumps have larger internal clearances as the pressure is generated by centrifugal force and high liquid velocity.  These pumps can handle impurities in the liquid and the flow in the discharge line may be throttled or shut off without the need for a relief valve. FEATURES Self-Priming to 20 Feet Suction Lift Rugged Bronze Construction Ideal for marine service (air conditioning, bilge, and sea water recirculating). O-Ring Housing seal eliminates gasket problems Auxiliary Connections - for convenient priming and draining Multiple Mechanical Shaft Seal Options -for various applications Pump Heads mount to Standard Footed Nema 56J Jet Pump Motors Shafts : 416 Stainless, Nickel Alloy, or 316 Passivated Stainless Multiple motor options including Explosion Proof For Pedestal Style, see 30PB Optional Lifting Handle DRIVE Centrifugal pumps are designed for single rotation and are non reversible.  Standard rotation is counter clockwise looking at the pump inlet port (clockwise facing pump shaft).  Close coupled centrifugal pumps may be driven by a variety of power sources such as electric motors, hydraulic motors or air motors. Self priming centrifugal pumps must be operated in the horizontal position.  LIQUIDS & TEMPERATURES Capacity - Water 60o F - Gallons Per Minute Maximum lift without foot valve is 10 feet. Bronze pumps are suitable for most common liquids in the pH range from 4-11.  If in doubt consult with factory or check the Oberdorfer™ Chemical Resistance Guide booklet.  The temperature limit for bronze pumps is 212F.  Higher temperatures are possible with fluoroelastomer or Polytetrafluoroethylene (PTFE) seals.  Centrifugal pumps are not well suited for pumping viscous liquids.  Viscosities up to 2000 SSu may be handled resulting in reduced performance and efficiency. Pump seal is mechanical carbon face type mated to ceramic wear face for maximum durability. Other seal components are made of Nitrile with low swell characteristics for compatibility with a wide range of liquids including many chemicals and solvents. SUCTION LIFT Up to 22 gallons per minute water flow and suction lift of 15 feet without a foot or check valve (25 foot suction lift using a foot or check valve and a filled inlet line). A 1/2” pipe plug on the tank top is for initial filling of priming chamber and inlet line--pump priming is automatic thereafter.      300B is Oberdorfers - Self Priming Centrifugal Pump Head Only Bronze    

Oberdorfer 109MB Series Centrifugal Pump FEATURES Pump Body: Bronze Ports: Inlet: 1 1/4" NPT Outlet: 1" NPT Flow: 80 GPM Max Pressure: to 19 PSI, 45 feet of head Impeller: Centrifugal Shaft Seal: Teflon Barrier Seal to Protect Motor Bearings. Carbon Face Mechanical Pump Seals. Buna Std., Viton and Teflon available. Shaft: 416 Stainless Steel is standard, Monel Shaft available for Marine Use Motor / Drive: Pump heads mount to standard footed NEMA 56J jet pump motors. A wide variety of motors are available and we can assemble for you.     APPLICATIONS / CHARACTERISTICS Oberdorfer™ centrifugal pumps have a single rotating metal impeller. Liquid enters at the center and is thrown outward radially by centrifugal force. The impeller is not in contact with other pump parts resulting in quiet, efficient, pumping action. The flow produced is not positive which permits the discharge line to be shut off completely without danger of overloading motors or bursting lines. Consequently a relief valve is not required. The liquid flow varies directly as the pump speed—the higher the speed the greater the flow. Horsepower required varies directly as flow and pressure. Maximum horsepower is required with a wide open discharge line. This is the point of maximum flow. With a throttled discharge, the flow decreases at a greater rate than the pressure increases thereby requiring less horsepower at the higher pressures. This is known as an “unloading” feature of the pump. FEATURES Rugged Bronze Construction A Standard in the Marine Air Conditioning Industry Extremely Quiet Operation O-Ring Housing seal eliminates gasket problems Polytetrafluoroethylene (PTFE) Barrier Seal to protect motor bearings Handles Contaminated Liquids Discharge port orientation flexibility-8 positions Mechanical Seal - Carbon/Ceramic, Nitrile - standard, Fluoroelastomer (S10) optional, Polytetrafluoroethylene (PTFE)(S11) optional Pump Heads mount to standard footed Nema 56J Jet Pump Motors Shafts: 416 Stainless, Nickel Alloy, or 316 Passivated Stainless Multiple motor options available For Industrial Version - see Model 700 series DRIVE This close-coupled pump uses a standard NEMA C-Flange Jet Pump Motor with weld-on base and threaded shaft end to accept the pump impeller. Single phase motors are nonreversible and are wired for the proper pump rotation which is counter-clockwise looking at the inlet end of the pump. (See the dimensional drawing.) Three phase motors must be checked out for proper rotation when the pump is installed.  Interchanging of any 2 wires in a 3-phase system will reverse motor rotation.  LIQUIDS & TEMPERATURES The special pump alloys used provide corrosion resistance to many liquids including water, water solutions, and a wide range of commercial chemicals. Questions as to the chemical compatibility of special liquids should be referred to the factory. The pump uses a mechanical type shaft seal with a Nitrile rubber element. It is suitable for water, oils, and some mild solvents and it is limited to 212oF and 75 P.S.I. Fluoroelastomer (S10) seals and Polytetrafluoroethylene (PTFE) (S11) seals are available for severe solvents and difficult chemicals. Viscous liquids with a maximum viscosity of 2000 Saybolt Seconds Universal can be pumped. However, when pumping viscous liquids as compared with water, a reduction in flow and pressure occurs and the required horsepower rate increases.  Liquids heavier than water require additional horsepower in direct proportion to the increase in specific gravity. Liquids contaminated with small solids or abrasives can be handled, but a reduction in mechanical seal life must be expected.  SUCTION LIFT These centrifugal pumps are not self-priming. They must be installed below the liquid level so that the liquid flows to the pump by gravity (flooded suction). However, if a foot valve is used at the beginning of the suction line and all air is bled from the pump by manual priming, the pump will lift on the suction side up to 15 feet. Such a system relies entirely on a non-leaking foot valve for starting capability.   Will Handle Contaminated Liquids. Extremely Quiet. A Standard in the Marine Air Conditioning Industry.     109MB is Oberdorfers - Centrifugal Pump Head Only Bronze 1 1/4" X 1"NPT  

Oberdorfer Pump 800B Ped Mnt Brz 1 1/4 X 1 Oberdorfer™ centrifugal pumps have a single rotating metal impeller. Liquid enters at the center and is thrown outward radically by centrifugal force. The impeller is not in contact with other pump parts resulting in quiet, efficient, pumping action. The flow produced is not positive which permits the discharge line to be shut off completely without danger of overloading motors or bursting lines. Consequently a relief valve is not required. The liquid flow varies directly as the pump speed--the higher the speed the greater the flow. Horsepower required varies directly as flow and pressure. Maximum horsepower is required with a wide open discharge line. This is the point of maximum flow. With a throttled discharge, the flow decreased at a greater rate than the pressure increases thereby requiring less horsepower at the higher pressures. This is known as an “unloading” feature of the pump.  Silent, efficient, centrifugal pumping is ideal for convenient equipment location in offices, laboratories, public areas, and living quarters. Long trouble-free service life has made centrifugal pumps acceptable for industrial uses or wherever clean or contaminated liquid is to be transferred or handled. The 800B centrifugal pump has external ball bearings isolated from the liquid being pumped. The ball bearings are grease sealed for life requiring no maintenance.     FEATURES Bronze Construction Heavy Duty Ball Bearings Designed for Pulley Drive Mechanical Seal Quiet Operation Handles Contaminated Liquids No Lubrication Required Closed Impeller -- High Discharge Pressure DRIVE The pedestal centrifugal pumps can be direct driven by electric motors and gasoline engines or pulley driven at intermediate speeds as listed in the capacity chart above.    LIQUIDS & TEMPERATURES Because centrifugal pumps are more efficient at higher shaft speeds, pumping of viscous or thick liquids is difficult. It is possible to lose as much as 40% pump performance when attempting to pump liquids of viscosity equal to S.A.E. 30 oil at room temperature. S.A.E. 30 oil at room temperature has a viscosity of 2000 Saybolt Seconds Universal. More viscous liquids are not recommended for centrifugal pumps.   Heavy liquids can be pumped; however, they demand more horsepower in direct ratio to the weight of water. For example, carbon tetrachloride has a specific gravity of 1.6 which means it is 1.6 times heavier than water and the horsepower required is 1.6 times water horsepower.   SUCTION LIFT This centrifugal pump is not self priming. Normally these pumps must be installed below the liquid level so that the liquid flows to the pump by gravity. However, if a foot valve is used at the beginning of the suction line and all air is bled from the suction line and pump by careful manual priming, these pumps will lift liquid on the suction side up to 15 ft. Such a system is only as positive as the ability of the foot valve to seal and keep the suction line and pump full of liquid. If the foot valve should leak, the pump will not prime. 

Oberdorfer 170M Cent Pump Peo Brz 3/4 Ports These Oberdorfer™ centrifugal pumps have a single open vane rotating impeller. Liquid enters at the center and is thrown outward radically by centrifugal force. The impeller is not in contact with other pump parts resulting in quiet, efficient pumping action. The flow produced is not positive which permits the discharge line to be shut off completely without danger of overloading motors or bursting lines. Consequently, a relief valve is not required.   The flow of these pumps can be conveniently controlled by a throttling valve in the discharge line. Horsepower demand will decrease as the pressure increases. Maximum horsepower occurs with a wide open discharge.   The lip seal is Nitrile with stainless steel spring reinforcement on a stainless steel motor shaft. The seal is friction press fit in a machined housing counter bore. Excessive system pressures above 15 PSI are not recommended as the seal could be forced out of the pump housing.   FEATURES Rugged Corrosion Resistant Bronze Construction Compact & Light Nitrile Lip Seal STD; Optional fluoroelastomer Lip TEFC Motors With Corrosion Resistant Passivated 316 SS Shafts 1/10 HP Permanent Magnet 12V, 24V, 32V DC Motors Rubber Base Grommets For Vibration Dampening Insulated Leads 1/13 HP Permanent Magnet 12V DC Motor (A95) Ideal for:   Marine Air Conditioning Engine Block Temperature Control Radiator & Heat Exchanger Circulation Baitwell Circulation DRIVE One of the outstanding features of this pump and motor unit is its compact D.C. motor size. Although small, adequate motor power is available.  Motors are available in 12, 24 and 32 VDC.   LIQUIDS & TEMPERATURES This pump is more than capable of pumping water, water solutions, and a wide range of commercial chemicals. Viscous liquids with a maximum viscosity of 2000 Saybolt Seconds Universal can be pumped. However, when pumping viscous liquids (as compared with water) a reduction in flow and pressure occurs and the required horsepower increases.  Liquids heavier than water require additional horsepower in direct proportion to the increase in specific gravity.  Questions about the chemical compatibility of special liquids should be referred to the factory.      SUCTION LIFT These pumps are not self priming.  They must be installed below the liquid level so that the liquid flows to the pump by gravity (flooded suction).  However, if a foot valve is used at the beginning of the suction line, and all air is bled from the pump by manual priming, the pump will lift on the suction side up to 15 feet.  Such a system relies entirely on the non-leaking foot valve for starting capability.  

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.

Oberdorfer 172B Cent Pump Peo Brz 3/4" Prt FEATURES Pump Body: Bronze Ports: 3/4" NPT Flow: 13 GPM Max Pressure: 7 PSI Max, 17 feet of head Impeller: Centrifugal Shaft Seal: Mechanical Seals - Type 6A/68 Buna Standard, Viton Optional Shaft: Corrosion resistant passivated 316 SS Shaft Motor / Drive: TEFC Motors 1/10 HP permanent Magnet 12V, 24V, 32V DC. Rubber base grommets for vibration dampening 1/13 HP Permanent Magnet 12V DC Motor - 172L threaded shaft style. 1/8 HP Capacitor Start 50/60 HZ, 115V & 220V AC Motors with Ignition protection, Thermal overload protection, Power cord with plug.     APPLICATIONS / CHARACTERISTICS BRONZE CLOSE COUPLED CENTRIFUGAL PUMP Ideal for: Marine Air Conditioning, Engine Block Temperature Control, Radiator and Heat Exchanger, Circulation Baitwell Circulation.   Oberdorfer Centrifugal Pump Head Only, Bronze, 3/4"NPT P