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Bosch Rexroth-R900443176-R900443176

BOSCH REXROTH
R900443176


$1,549.00 USD
  • BOSCH REXROTH
  • Material:R900443176
  • Model:Z2FS22-8-3X/S2

Due to extremely high demand, please call 920-337-0234 for availability

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth Z2FS22-8-3X/S2 (R900443176) is a high-performance industrial hydraulic valve designed for reliable flow throttling to a set value. This sandwich plate valve falls under the category of throttle check valves, which are utilized to limit the flow of hydraulic fluid to one or two actuator ports. It features a double throttle check mechanism that allows for adjustable throttling in one direction while permitting free return flow in the opposite direction. The valve's construction includes two symmetrically arranged throttle check valves with adjustable throttle spools that can be fine-tuned via an internal hexagon spindle. The Z2FS22-8-3X/S2 is designed to maintain its throttling position through a combination of active pressure and spring force when handling supply throttling. With its ability to control actuator velocity, this valve is typically installed between the directional valve and the subplate. It offers versatility in application as it can be used for both supply and discharge throttling. The model features corrosion-resistant design, ensuring durability and longevity even in demanding environments. The Bosch Rexroth Z2FS22-8-3X/S2 adheres to ISO standards with its porting pattern and comes equipped with NBR seals compatible with various hydraulic fluids like HL, HLP, HLPD, HVLP, HVLPD, and HFC. Its specifications include a size designation of CETOP D, a maximum operating pressure capacity of up to 315 bar, and a maximum flow rate capability measured in liters per minute (l/min). This model is characterized by its ease of adjustment through a spindle with a hexagon socket and can handle both main or pilot flows for two consumer ports. The component series X indicates its place within the manufacturer's product range, signifying the latest advancements in design and functionality for industrial hydraulic systems.


Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Industrial hydraulic valve in a high performance range. Reliable throttling of the flow to setting value.

Unpacked Weight: 6.841 kg

The valve type Z2FS is a throttle check valve in sandwich plate design. It is used for the flow limitation of one or two actuator ports.

Two symmetrically arranged throttle check valves limit flows (by adjustable throttle spools) in one direction and allow free return flow in the opposite direction.

In case of supply throttling, the hydraulic fluid is directed through channel A➀ via throttling point (1) to actuator A➁. The throttle spool (2.1) can be axially adjusted via the spindle (3) for adjustment of the throttling point (1).

Simultaneously, the hydraulic fluid in channel A➀ is directed via the bore (4) to the piston side (5). The active pressure and the spring force retain the throttle spool (2.1) in throttle position.

The hydraulic fluid return flow from actuator B➁ displaces the throttle spool (2.2) and enables the unobstructed flow as check valve. Depending on the version ("S" or "S2"), the throttling effect may occur in supply or discharge.

 

Flow limitation

For actuator velocity adjustment, the throttle check valve is installed between the directional valve and the subplate.

Supply throttling

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

①

component side

②

plate side

Direct actuated
Internal hexagon
Component series 3X
Size 25
Maximum operating pressure 350 bar
Maximum flow 360 l/min
Data Sheet Download Data Sheet
3D CAD Download 3D CAD
Manual Download Manual
Manual Download Manual
Manual Download Manual
Manual Download Manual
Manual Download Manual
Spool symbolA1 → A2, B1 → B2 or A2 → A1, B2 → B1
Max. pressure350
Productgroup ID9,10,11,12,13,14
Number of ports4
Type of actuationwith mechanical actuation
Size25
Max. flow360
Type of connectionSandwich plate
Connection diagram NFPANFPA T3.5.1 R2-2002 D08
Size_CETOPD08
Connection diagramISO 4401-08-08-0-05
Number of switching positions2
Weight6.841
SealsNBR
Hydraulic fluidHL,HLP,HLPD,HVLP,HVLPD,HFC

01

02

03

04

05

06

07

08

09

Z2FS

22

8

–

3X

/

*

01

Throttle check valve, sandwich plate design

Z2FS

02

Size 25

22

03

Throttle check valve side A and B

–

Throttle check valve side A

A

Throttle check valve side B

B

Adjustment type

04

Spindle with internal hexagon

8

05

Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions)

3X

06

Supply throttling

S

Discharge throttling

S2

Corrosion resistance (outside)

07

None (valve housing primed)

no code

Improved corrosion protection (240 h salt spray test according to EN ISO 9227)

J3

Seal material

08

NBR seals

no code

FKM seals

V

Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)

09

Further details in the plain text

*

general

Size

25

Weight (approx.)

kg

8

Installation position

any

Ambient temperature range

NBR seals

°C

-30 … +50

FKM seals

°C

-20 … +50

hydraulic

Size

25

Maximum operating pressure

bar

350

Maximum flow

l/min

360

Hydraulic fluid

see table

Hydraulic fluid temperature range

NBR seals

°C

-30 … +80

FKM seals

°C

-20 … +50

Viscosity range

mm²/s

2.8 … 380

Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)

Class 20/18/15
1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Data sheet

Mineral oils

HL, HLP, HLPD, HVLP, HVLPD

NBR, FKM

DIN 51524

90220

Bio-degradable

Insoluble in water

HETG 1)

NBR, FKM

ISO 15380

90221

HEES 1)

FKM

Soluble in water

HEPG 1)

FKM

ISO 15380

Flame-resistant

Water-free

HFDU (glycol base)

FKM

ISO 12922

90222

HFDU (ester base)

1)

FKM

HFDR

FKM

Containing water

HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) 1)

NBR

ISO 12922

90223

Important information on hydraulic fluids:

For more information and data on the use of other hydraulicfluids, 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 50 K 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 – containing water: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system.
1) Not recommended for corrosion-protected version "J3" (contains zinc)

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

Δp-qV characteristic curves

Via check valve with closed throttle

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Δp-qV characteristic curves

Constant throttle position

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

①

component side

②

plate side

Supply throttling "S"

Version "-"

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Version "A"

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Version "B"

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Discharge throttling "S2"

Version "-"

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Version "A"

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Version "B"

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Dimensions in mm

technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated
technical illustration-R900443176-Size 25, A1 → A2, B1 → B2 or A2 → A1, B2 → B1, mechanically actuated

Required surface quality of the valve contact surface

1

Name plate

2

Adjustment type "8“

Spindle for changing the flow cross-section (internal hexagon SW6)

Left rotation = higher flow Right rotation = lower flow

3

Through holes for valve mounting

4

Same seal rings for ports A, B, P, T

5

Identical seal rings for ports X, Y, L

6

Locking pin (included in the scope of delivery)

7

Hexagon SW22, tightening torque MA = 25 Nm

8

Porting pattern according to  ISO 4401-08-08-0-05

9.1

Plug screw with version "B"

9.2

Plug screw with version "A"

Valve mounting screws (separate order)

Size

Quantity

Hexagon socket head cap screws

Material number

25

6

ISO 4762 - M12 - 10.9-flZn-240h-L

-

Notice:

Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve.