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The gear pumps types F, D, FLM, FKM, FOM, FAM are optionally available with pressure relief valve. Add *U* in the type designation of the pump version with circulation valve in the pump head. (FU, DU, FLMU, FKMU, FAMU, FOMU)
Gear pumps with spring-loaded circulation valve in the pump head, the pressure relief valve with internal circulation may only be used for short-term pressure limitations.
If a valve is required for intermittent & continuous operation, a valve with return line to the tank should be used, for example pressure relief valves type DB
pressure relief valves type DB
F..U/DU1-3 (up to 20 bar) Gear Pumps Size 1 to 3
Pressure ranges and possible presettings of the opening pressure
(I) 2-10 bar
(II) 5-15 bar
(III) 10-20 bar
F..U/DU4-5 (up to 10 bar) Gear Pumps Size 4 & 5
Pressure ranges and possible presettings of the opening pressure
(I) 2-6 bar
(II) 5-10 bar
