RE 18321-09/03.2016, Bosch Rexroth Oil Control S.p.A.
Technical data
Max. operating pressure 350 bar (5000 psi)
Max. flow 40 l/min. (11 gpm)
Max. internal leakage
1)
15 drops/min. closed
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 34 - 41 Nm (25 - 30 ft-lbs)
Weight 0.16 kg (0.35 lbs)
Cavity CA-08A-2N (see data sheet 18325-70)
Lines bodies and standard
assemblies
Please refer to section “Hydraulic
integrated circuit” or consult factory
Seal kit
2)
Code: RG08A2010520100
material no: R901101437
Fluids Mineral-based or synthetics with
lubricating properties
at viscosities of 5 to 800 mm
2
/s (cSt)
Recommended degree of
fluid contamination
Nominal value max. 10µm (NAS 8) /
ISO 4406 19/17/14
Installation No restrictions
Other Technical Data See data sheet 18350-50
1) Measured at 200 bar (2900 psi)
2) Only external seals for 10 valves
Description
With flow from 2 to 1, the valve provides a fully adjustable
orifice restriction. Free flow is permitted from 1 to 2,
regardless of valve adjustment, by when pressure
overcomes the spring bias of the valve’s check function.
STFU, compared to STVU, is suitable for applications
requiring fine adjustments.
Needle restrictor,
free reverse flow, fine adjustment
Common cavity, Size 08
RE 18321-09
Edition: 03.2016
Replaces: 01.2010STFU-08A 04.01.06 - X - 56.00
Characteristic curve
2>1 Flow Q
1>2 Flow Q
Pressure ΔpPressure Δp