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BOSCH REXROTH
Z2S6A1-6X/SO60
R900398310
Check Valves

Check valves: Z2S 6.-6x/

$1,281.00

BOSCH REXROTH

MATERIAL:  R900398310

SUMMARY:  Check valves: Z2S 6.-6x/

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The isolator valve type Z2S is a releasable check valve in sandwich plate design.

It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times.

In direction A① to A② or B① to B②, there is a free flow; in the opposite direction, the flow is blocked.

If, for example, there is a flow through the valve in direction A① to A②, the control spool (1) is moved in the direction of the B side, opens the ball seat valve (2) and then pushes the poppet (3) off its seat. Hydraulic fluid can now flow from B➁ to B➀.

In order to allow the ball seat valve (2) to be safely closed, the control spool (1) must be hydraulically unloaded (see circuit example).

 

Pre-opening

Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided. The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely. technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Notice:

In valves without pre-opening, sudden unloading of pent-up pressure volume may occur. Resulting switching shocks may lead to premature wear on installed components, as well as noise formation.

1

Control spool, area A2

2

Poppet, area A1

3

Stop

Type Z2S 6 A…SO40

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 A…SO60

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

1

Control spool, area A2

2

Poppet, area A1

3

Stop

4

Control spool, area A4

5

Pre-opening, area A3

Type Z2S 6 -…SO55 (with pre-opening)

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

1) Corrosion-resistant surface on request: e.g."J50" thick film passivated (DIN 50979 Fe//Zn8//Cn//T0)

2) Locking pin ISO 8752-3x8-St, material no. R900005694 (separate order)

01

02

03

04

05

06

07

08

09

10

Z2S

6

6X

/

*

01

Check valve, Sandwich plate design

Z2S

02

Size 6

6

Leakage-free blocking

03

In channel A and B

In channel A

A

In channel B

B

Cracking pressure

04

1,5 bar

1

3 bar

2

6 bar

3

05

Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions)

6X

06

Surface without corrosion resistance

1)

no code

Seal material

07

NBR seals

no code

FKM seals

V

The selection is dependent on the operating parameters (hydraulic fluid, temperature, etc.)!

Locating hole

08

no code

With locating hole

/60

With locating hole and locking pin ISO 8752-3x8-St

2)

/62

Special version

09

Without special version

no code

Control open by external port G1/4 (only version "A" and "B")

SO40

With pre-opening

SO55

Control spool unloaded to port T

SO60

With pre-opening and control open from channel P

SO150

Symbols (examples) see "Symbols/Circuit diagrams"

10

Further details in the plain text

*

general

Size

6

Weight

kg

0.8

Installation position

any

Ambient temperature range

NBR seals

°C

-30 … +80

FKM seals

°C

-20 … +80

hydraulic

Size

6

Maximum operating pressure

bar

315

Cracking pressure 1)

bar

1.5 / 3 / 6

Maximum flow

l/min

60

Direction of flow

see symbols

Hydraulic fluid

see table

Hydraulic fluid temperature range (NBR seals)

°C

-30 … +80

Hydraulic fluid temperature range (FKM seals)

°C

-20 … +80

Viscosity range

mm²/s

2.8 … 500

Maximum admissible degree of contamination of the hydraulic fluid 2)

Class 20/18/15 according to ISO 4406 (c)

Area ratio

Without pre-opening

A1/A2 ~ 1/3.5 (see sectional drawing)

With pre-opening

A3/A2 ~ 1/12.5 (see sectional drawing)

Version "SO60"

A1/A4 ~ 1/7 (see sectional drawing)
1) in free direction
2) 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.

Selection of optimal sealing material also depends on the type of hydraulic fluid used.

For applications outside these parameters, please consult us!

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils

HL, HLP, HLPD

NBR, FKM

DIN 51524

Bio-degradable

Insoluble in water

HETG

NBR, FKM

VDMA 24568

HEES

FKM

Soluble in water

HEPG

FKM

VDMA 24568

Flame-resistant

Water-free

HFDU, HFDR

FKM

ISO 12922

Containing water

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

NBR

ISO 12922

Important information on hydraulic fluids!

For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)! The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature.

Flame-resistant – containing water:

Maximum operating pressure 210 bar

Maximum hydraulic fluid temperature 60 °C

Life cycle compared to operation with mineral oil HL, HLP 30 to 100  %

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

Δp-qV characteristic curves

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Δp-qV characteristic curves

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Circuit example, schematic

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

component side

plate side

Type Z2S 6 A…

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 -… and Z2S 6 -…SO55

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 B…

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 A…SO40

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 A…SO60

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 -…SO150

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

component side

plate side

Dimensions in mm

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Dimensions in mm

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type

L1

mm

Z2S 6...ohne Bez. 11
Z2S 6...SO40 11
Z2S 6...SO55 11 1)
21.5 1)
Z2S 6...SO60 11
Z2S 6...SO150 21.5
1) Maximum dimension on the side of the check valve cartridge

component side – porting pattern according to DIN 24340 form A (without locating hole), or ISO 4401-03-02-0-05 (with locating hole Ø4 x 4 mm deep) and NFPA T3.5.1 R2-2002 D03

plate side – porting pattern according to DIN 24340 form A (without locating hole), or ISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St; version "/60" and "/62") and NFPA T3.5.1 R2-2002 D03

3

Name plate

4

Through hole for valve mounting

5

Identical seal rings for ports A, B, P, and T

6

Locking pin ISO 8752-3x8-St (only version "/62")

7

Plug screw SW22

Valve mounting screws (separate order)

4 hexagon socket head cap screws ISO 4762 - M5 - 10.9

4 hexagon socket head cap screws N10-24 UNC

Notice!

The length of the valve mounting screws of the sandwich plate valve must be selected according to the components mounted under and over the isolator valve.

Depending on the application, screw type and tightening torque must be adjusted to the circumstances.

Please ask Rexroth for screws with the required length.

Type Z2S 6 -… (with pre-opening)

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

Type Z2S 6 A…

technical illustration-Z2S6A1-6X/SO60-Check valves: Z2S  6.-6x/

component side

plate side