Inhalt
Features 1
Contents 1
Ordering code 2
Symbols (① = component side, ② = plate side) 3
Function, section 4
Technical data
(For applications outside these parameters, please con-
sult us!) 5
Characteristic curves
(measured with HLP46, ϑ
oil
= 40 ±5 °C [104 ±9 °F]) 6
Dimensions: Version "–"
(dimensions in mm [inch]) 7
Dimensions: Version "A"
(dimensions in mm [inch]) 8
Dimensions: Version "B"
(dimensions in mm [inch]) 9
Dimensions 10
Further information 10
Notes 11
Notes 12
RE 27518, edition: 2019-07, Bosch Rexroth AG
Throttle check valve
Features
▶ Sandwich plate valve
▶ Porting pattern according to ISO 4401-05-04-0-05,
NFPA T3.5.1 R2 and ANSI B93-7D05
▶ For the main or pilot flow limitation of 2 actuator ports.
▶ 3 adjustment types, optional:
– Lockable rotary knob with scale
– Spindle with internal hexagon and scale
– Rotary knob with scale
▶ For supply or discharge throttling
▶ Corrosion-protected design
Contents
Features 1
Ordering code 2
Symbols 3
Function, section 4
Technical data 5
Characteristic curves 6
Dimensions 7 … 10
Further information 10
▶ Size 10
▶ Component series 3X
▶ Maximum operating pressure 315 bar [4569 psi]
▶ Maximum flow 160 l/min [42.3 US gpm]
RE 27518
Edition: 2019-07
Replaces: 2016-10
H5556
Type Z2FS
2/10 Z2FS | Throttle check valve
Bosch Rexroth AG, RE 27518, edition: 2019-07
Ordering code
01 Twin throttle check valve, sandwich plate design Z2FS
02 Size 10 10
03 Throttle check valve side A and B –
1)
Throttle check valve side A A
Throttle check valve side B B
Adjustment type
04 Lockable rotary knob with scale 3
2)
Spindle with internal hexagon and scale 5
Rotary knob with scale 7
05 Component series 30 … 39 (30 … 39: unchanged installation and connection dimensions) 3X
06 With two throttle check valves, supply or discharge throttling (the valve can be rotated) no code
Supply throttling on side A (version "A…S")
Supply throttling on side B (version "B…S")
S
Discharge throttling on side A (version "A…S2")
Discharge throttling on side B (version "B…S2")
S2
Corrosion resistance
07 None no code
Improved corrosion protection (240 h salt spray test according to EN ISO 9227); (only version "5" without scale) J3
Seal material
08 NBR seals no code
FKM seals V
Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
Pilot oil duct
09 None no code
Via channel X and Y SO30
10 Further details in the plain text
01 02 03 04 05 06 07 08 09 10
Z2FS 10 – 3X / *
Notes:
Preferred types and standard units are specified in the EPS
(standard price list).
1)
Identical adjustment types on sides A and B
2)
H-key with material no. R900008158 is included in the scope of
delivery.
Throttle check valve | Z2FS 3/10
RE 27518, edition: 2016-10, Bosch Rexroth AG
Symbols (① = component side, ② = plate side)
Supply throttling "S" Discharge throttling "S2"
Version
"–…SO30"
1
2
TA TBPX AB Y
1
2
TA TBPX AB Y
Version
"A…SO30"
1
2
TA TBPX AB Y
1
2
TA TBPX AB Y
Version
"B…SO30"
1
2
TA TBPX AB Y
1
2
TA TBPX AB Y
Notice:
▶ Deviating from ISO 4401, port T is called TA and port T1 is
called TB in this data sheet.
▶ Version "SO30" is shown. The standard version does not have
ports X and Y.
A
B
A
B
5
3.1 246 3.2 7
1
1
2
4/10 Z2FS | Throttle check valve
Bosch Rexroth AG, RE 27518, edition: 2019-07
Function, section
The hydraulic fluid return flow from actuator B2 displaces
the throttle spool (3.2) against the spring (7) and enables
the unobstructed flow as check valve. Depending on the
installation position, the throttling effect may occur in
supply or discharge.
Main flow limitation
For actuator velocity adjustment (main flow limitation),
the throttle check valve is installed between the
directional valve and the subplate.
Pilot flow limitation
With pilot-operated directional valves, the throttle check
valve can be applied for switching time adjustment (pilot
flow limitation). In this case, it is installed between the
pilot control valve and the main valve.
The valve type Z2FS 10 is a throttle check valve in
sandwich plate design. It is used for the main or pilot flow
limitation of one or two actuator ports.
Two throttle check valves aligned symmetrically to each
other limit flows in one direction and allow free return flow
in the opposite direction.
In case of supply throttling, the hydraulic fluid is directed
through channel A1 via throttling point (1) formed by the
control edge (2) and the throttle spool (3.1) to actuator
A2. The throttle spool (3.1) can be axially adjusted via the
spindle (4) for adjustment of the throttling point (1).
Simultaneously, the hydraulic fluid in channel A1 is
directed via the bore (5) to the piston side (6). The active
pressure and the spring force retain the throttle
spool(3.1) in throttle position.
Supply throttling
Throttle check valve | Z2FS 5/10
RE 27518, edition: 2016-10, Bosch Rexroth AG
general
Weight kg [lbs] Approx. 3.1 [6.8]
Installation position Any
Ambient temperature range °C [°F] –30 … -80 [–22 … -176] (NBR seals)
–20 … +80 [–4 … +176] (FKM seals)
hydraulic
Maximum operating pressure bar [psi] 315 [4569]
Maximum flow l/min [US gpm] 160 [42.2]
Hydraulic fluid See table below
Hydraulic fluid temperature range °C [°F] –30 … -80 [–22 … -176] (NBR seals)
–20 … +80 [–4 … +176] (FKM seals)
Viscosity range mm
2
/s [SUS] 10 … 800 [60 … 3710]
Maximum admissible degree of contamination of the hydraulic fluid
Cleanliness class according to ISO 4406 (c)
Class 20/18/15
1)
Technical data
(For applications outside these parameters, please consult us!)
1)
The cleanliness classes specified for the components must be
adhered to in hydraulic systems. Effective filtration prevents
faults and at the same time increases the life cycle of the
components.
For the selection of the filters, see www.boschrexroth.com/filter.
2)
Not recommended for corrosion-protected version "J3"
Hydraulic fluid Classification Suitable sealing
materials
Standards Data sheet
Mineral oils HL, HLP NBR, FKM DIN 51524 90220
Bio-degradable
2)
▶ Insoluble in water HETG FKM
ISO15380
90221HEES FKM
▶ Soluble in water HEPG FKM ISO15380
Flame-resistant ▶ Water-free HFDU (glycol base) FKM
ISO 12922 90222
HFDU (ester base)
2)
FKM
▶ Containing water HFC (Fuchs Hydrotherm 46M,
Petrofer Ultra Safe 620)
NBR
ISO 12922 90223
Important information on hydraulic fluids:
▶ For more information and data on the use of other hydraulic
fluids, please refer to the data sheets above or contact us.
▶ There may be limitations regarding the technical valve data
(temperature, pressure range, life cycle, maintenance intervals, etc.).
▶ The ignition temperature of the hydraulic fluid used must be 50K
higher than the maximum surface temperature.
▶ Flame-resistant – containing water:
– Maximum pressure differential 210 bar, otherwise, increased
cavitation erosion
– Life cycle as compared to operation with mineral oil HL, HLP
30 … 100%
– Maximum hydraulic fluid temperature 60 °C
▶ Bio-degradable and flame-resistant: If this hydraulic fluid is
used, small amounts of dissolved zinc may get into the hydraulic
system.
8
6
4
2
0 10020 40 60 80 120
2
1
14
01
60
[0]
[20]
[100]
[116]
[5]
[0]
[10] [15] [20] [25] [30] [42.3][35]
[40]
[60]
[80]
100120 140160
[5]
[0]
[10] [15] [20][25][30] [42.3][35]
[0]
[14.5]
[2176]
[2611]
[72.5]
[145]
[1450]
180
100
150
50
10
5
1
08020 40 60
9,5
10
9876543 8,57,56,5
10,5
11
11,5
[725]
6/10 Z2FS | Throttle check valve
Bosch Rexroth AG, RE 27518, edition: 2019-07
Characteristic curves
(measured with HLP46, ϑ
oil
= 40 ±5 °C [104 ±9 °F])
1 Throttle closed
2 Throttle open
∆p-q
V
characteristic curves (via check valve)
Pressure differential
in bar [psi] →
Flow in l/min [US gpm] →
∆p-q
V
characteristic curves (throttle position constant)
Pressure differential in bar [psi] →
Flow in l/min [US gpm] →
Throttle position in rotations
3; 411 3; 4
2
3
20
89201
3
89201
Ø32
309
[12.17]
185
[7.28]
80 x 70
[3.15 x 2.76]
88
[3.47]
40
[1.58]
Ø10
[Ø0.394]
Ø8 (A, B)
[Ø0.315]
Ø7,5 (TA, TB)
[Ø0.295]
49,5
[1.95]
70
[2.76]
48,5
[1.91]
164
[6.46]
153
[6.02]
203
[7.99]
“X”
“X”
12
12,9
TA
TB
P
A
B
1,5
4 x Ø6,5
[Ø0.256]
4 x Ø6,7
[Ø0.264]
5 x Ø15,7
[Ø0.62]
91 9
2
7
6
[Ø1.26]
Ø32
[Ø1.26]
[0.79]
20
[0.79]
[0.079
]
[0.47]
F1
F2
F3
F4
[0.51]
[0.059]
10 85
X
Y
0,01/100
[0.0004/4.0]
Rzmax 4
Throttle check valve | Z2FS 7/10
RE 27518, edition: 2016-10, Bosch Rexroth AG
Required surface quality of the
valve contact surface
Dimensions: Version "–"
(dimensions in mm [inch])
Notes:
▶ Deviating from ISO 4401, port T is called TA and port T1 is
called TB in this data sheet.
▶ The dimensions are nominal dimensions which are subject to
tolerances.
▶ Version "SO30" is shown. The standard version does not have
ports X and Y.
Item explanations and valve mounting screws
see page 10.
3; 411
2
3
20
89201
Ø32
231
[9.09]
257
[10.12]
80 x 70
[3.15 x 2.76]
88
[3.47]
40
[1.58]
Ø10
[Ø0.394]
Ø8 (A, B)
[Ø0.315]
Ø7,5 (TA, TB)
[Ø0.295]
49,5
[1.95]
70
[2.76]
48,5
[1.91]
153
[6.02]
178
[7.01]
12
12,9
TA
TB
P
A
B
1,5
4 x Ø6,5
[Ø0.256]
4 x Ø6,7
[Ø0.264]
5 x Ø15,7
[Ø0.62]
91
2
2
7
6
[Ø1.26]
[0.79]
[0.079
]
[0.47]
F1
F2
F3
F4
[0.51]
[0.059]
105
X
Y
169
[6.65]
158,5
[6.24]
0,01/100
[0.0004/4.0]
Rzmax 4
8/10 Z2FS | Throttle check valve
Bosch Rexroth AG, RE 27518, edition: 2019-07
Required surface quality of the
valve contact surface
Dimensions: Version "A"
(dimensions in mm [inch])
Notes:
▶ Deviating from ISO 4401, port T is called TA and port T1 is
called TB in this data sheet.
▶ The dimensions are nominal dimensions which are subject to
tolerances.
▶ Version "SO30" is shown. The standard version does not have
ports X and Y.
Item explanations and valve mounting screws
see page 10.
11 3; 4
2
3
89201
80 x 70
[3.15 x 2.76]
88
[3.47]
40
[1.58]
Ø10
[Ø0.394]
Ø8 (A, B)
[Ø0.315]
Ø7,5 (TA, TB)
[Ø0.295]
49,5
[1.95]
70
[2.76]
48,5
[1.91]
153
[6.02]
12
12,9
TA
TB
P
A
B
1,5
4 x Ø6,5
[Ø0.256]
4 x Ø6,7
[Ø0.264]
5 x Ø15,7
[Ø0.62]
1 9
2
7
6
Ø32
[Ø1.26]
20
[0.79]
[0.079
]
[0.47]
F1
F2
F3
F4
[0.51]
[0.059]
105
X
Y
231
[9.09]
257
[10.12]
178
[7.01]
169
[6.65]
158,5
[6.24]
0,01/100
[0.0004/4.0]
Rzmax 4
Throttle check valve | Z2FS 9/10
RE 27518, edition: 2016-10, Bosch Rexroth AG
Required surface quality of the
valve contact surface
Dimensions: Version "B"
(dimensions in mm [inch])
Notes:
▶ Deviating from ISO 4401, port T is called TA and port T1 is
called TB in this data sheet.
▶ The dimensions are nominal dimensions which are subject to
tolerances.
▶ Version "SO30" is shown. The standard version does not have
ports X and Y.
Item explanations and valve mounting screws
see page 10.
Bosch Rexroth AG, RE 27518, edition: 2019-07
10/10 Z2FS | Throttle check valve
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone +49 (0) 93 52 / 18-0
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
reproduced or given to third parties without its consent.
The data specified above only serve to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. The information given does not release the user
from the obligation of own judgment and verification. It must be remembered
that our products are subject to a natural process of wear and aging.
Dimensions
1 Name plate
2 Adjustment type "5" – spindle for changing the flow cross-
section (internal hexagon SW8)
▶ Left rotation = higher flow
▶ Right rotation = lower flow
3 Adjustment type "3"
4 Adjustment type "7"
5 4 through holes for valve mounting
6 Identical seal rings for ports A, B, P, TA, TB
7 R-ring plate
8 Modification from supply to discharge throttling is realized by
rotation of the device around axis "X"–"X" (only with
version"–")
9 Space required to remove the key
10 Porting pattern according to ISO 4401-05-04-0-05,
NFPA T3.5.1 R2 and ANSI B93-7D05
11 Version "J"
To adjust the valve, disassemble the slotted screw. Further
procedure see position 2 (adjustment type "5"). After setting
of the valve, assemble the slotted screw.
Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - M6 - 10.9
4 hexagon socket head cap screws 1/4-20 UNC
Notes:
Length and tightening torque of the valve mounting screws must
be calculated according to the components mounted under and
over the sandwich plate valve.
Further information
▶ Subplates Data sheet 45100
▶ Hydraulic fluids on mineral oil basis Data sheet 90220
▶ Environmentally compatible hydraulic fluids Data sheet 90221
▶ Flame-resistant, water-free hydraulic fluids Data sheet 90222
▶ Flame-resistant hydraulic fluids - containing water (HFAE, HFAS, HFB, HFC) Data sheet 90223
▶ Hydraulic valves for industrial applications Operating instructions 07600-B
▶ Use of non-electrical hydraulic components in an explosive environment (ATEX) Data sheet 07011
▶ Selection of the filters www.boschrexroth.com/filter
▶ Information on available spare parts www.boschrexroth.com/spc
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone +49 (0) 93 52 / 18-0
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
reproduced or given to third parties without its consent.
The data specified above only serve to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. The information given does not release the user
from the obligation of own judgment and verification. It must be remembered
that our products are subject to a natural process of wear and aging.
Throttle check valve | Z2FS 11/10
RE 27518, edition: 2019-07, Bosch Rexroth AG
Notes
Bosch Rexroth AG, RE 27518, edition: 2019-07
12/10 Z2FS | Throttle check valve
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone +49 (0) 93 52 / 18-0
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
reproduced or given to third parties without its consent.
The data specified above only serve to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. The information given does not release the user
from the obligation of own judgment and verification. It must be remembered
that our products are subject to a natural process of wear and aging.
Notes
