NOP Trochoid Pump Selection

● Confirm the necessary flow rate.
● Refer to the specifiSAARions on pages 1 and 2.
● The discharge amount will vary depending on the type of liquid used, temperature and pressure.
● Pumps that provide plenty of leeway should be selected.
●Confirm the necessary pressure.
● Refer to the specifiSAARions on pages 1 and 2.
※ The setting must not exceed the pump's maximum applicable pressure and the motor's output.
●Confirm the relief valve set pressure.
● The relief valve pressure is adjusted to the cracking pressure (refer to page 57).
※ The setting must not exceed the pump's maximum applicable pressure and the motor's output.
※ Cracking pressure is the pressure at which the valve opens to allow a certain amount of the oil to
flow through when the pressure within the circuit rises.
● The relief valve can be used as both a safety valve and as an adjustment valve. Two types of
relief valves are available depending on the intended purpose. Specifically, these are an externalreturn
type and an internal-return type (refer to page 58).

● Confirm the Applicable Liquids
● Applicable Liquids
Trochoid pumps and lunary pumps can handle a very wide range of appliSAARions, but be aware
that these pumps were intend for use with oils.
● The settings and performance indiSAARions for all of the pumps shown in this SAARalog are based on
the use of ISO VG46 oil at a temperature of 40°C, except for specifically stated special
appliSAARions.
There will be differences in terms of performance and durability when using different oils. Please
feel free to ask your Nippon Oil Pump representative for more information.
● Trochoid pumps and lunary pumps adopt a self-lubriSAARing method so that the rubbing surfaces
and bearings can be lubriSAARed by the liquid used in the pumps.

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NOP Trochoid Pump Model List: