Oberdorfer model # N990R - Gear Pump
Oberdorfer Pumps
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| Pump
Body: |
Bronze
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Impeller: |
Lip Seal Buna-N
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Port Size: |
1" inch NPT
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APPLICATIONS |
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Features:
• Bronze Construction with Stainless Steel Shafts
• Helical gears for quiet operation
• Easy Field Assembly to Motors
• Self-Lubricating Carbon Bearings
• O-ring seal for max. leak protection
• For clutch version see N990-38
• For air motor driven version, see N990S15H-t34
Applications:
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 32 F to 140 F for longest pump life. If more extreme temperature conditions exist, our 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.
ROTATION AND RELIEF VALVE:
The relief valve is not intended to be a metering or flow control device. Its main purpose is to function as a discharge pressure relief when the spring tension is exceeded by the discharge pressure. Overheating can occur within 5-10 minutes if the discharge line is completely shut off for extended periods.
Unless otherwise specified, the pump motor unit is supplied by the factory for shaft rotation clockwise from shaf t end. Reversing the motor rotation will reverse the “in” and “out” ports and also requires changing the relief valve location. The relief valve is always on the discharge side in this pump series. The factory pressure setting is 50 PSIG. To increase pressure, turn the relief valve adjusting screw in a clockwise direction.
To reverse single phase motors, find instructions on the inside of the junction box cover or on the name plate of the motor.
Three phase motors are not wired for any particular rotation. They can be reversed by interchanging any two (2) wires of the three (3) wire leads.
Pump Only for the following units:
Single Phase, 1750 RPM pump & motor codes : N990RH-N26, N990RJ-T45, N990RJ-T45, N990RJ-W45, N990RK-Y45, N990RK-Y45, N990RK-Y45, N990RK-X45
Three Phase, 1750 RPM pump & motor codes : N990RH-N95, N990RJ-T95, N990RJ-T95, N990RJ-W95, N990RK-Y95, N990RK-Y95, N990RK-Y95, N990RK-X95
Single Phase, 1150 RPM pump & motor codes : N990RH-M46, N990RH-M46, N990RJ-N46, N990RJ-T46, N990RK-W46, N990RK-W46, N990RL-Y46, N990RL-Y46
Three Phase, 1150 RPM pump & motor codes : N990RH-M96, N990RH-M96, N990RJ-N96, N990RJ-T96, N990RK-W96, N990RK-W96, N990RL-Y96, N990RL-Y96
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Oberdorfer model # N990R - Gear Pump |
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Description |
Price
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