Media: | Oil |
---|---|
Temperature: | Ordinary Temperature |
Actuator: | Pneumatic |
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Features:
Sandwich plate valve for use in vertical stackings Porting pattern according to DIN 24340 form A (without locating hole) Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) For the leakage-free blocking of one or two actuator ports, optional Various cracking pressures, optional (see ordering codes) With pre-opening, optional Check valve installation sets available individually Special versions on request\
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 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.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 |
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 |
* |
Size |
6 | ||
Weight |
kg |
0.8 | |
Installation position |
any | ||
Ambient temperature range |
NBR seals |
°C |
-30 … +80 |
FKM seals |
°C |
-20 … +80 |
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, |
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 % |
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Quantity(pieces) | 1 - 5 | >5 |
Lead time (days) | 10 | To be negotiated |