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Description
- Size 16
- Component series 5X
- Maximum operating pressure 315 bar
- Maximum flow 300 l/min
Features
- Sandwich plate valve for use in vertical stackings
- Porting pattern according to ISO 4401-07-07-0-05
- For the leakage-free blocking of one or two actuator ports, optional
- Various cracking pressures
- With pre-opening
- Check valve installation sets available individually
- Corrosion-protected design
Product description
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.
Type Z2S 16 ‒…
Type Z2S 16 A…
Type Z2S 16 A…SO40
Type Z2S 16 A…SO60
Circuit example, schematic
| 1 | Control spool, area A2 |
| 2 | Ball, area A3 |
| 3 | Poppet, area A1 |
| 4 | Stop |
| 5 | Control spool, area A4 |
| ① | component side |
| ② | plate side |
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | ||
| Z2S | 16 | – | 5X | / | * |
| 01 | Check valve, Sandwich plate design | Z2S |
| 02 | Size 16 | 16 |
| Leakage-free blocking | ||
| 03 | In channel A and B | – |
| In channel A | A | |
| In channel B | B | |
| Cracking pressure | ||
| 04 | 3 bar | 1 |
| 5 bar | 2 | |
| 7,5 bar | 3 | |
| 10 bar | 4 | |
| 05 | Component series 50 ... 59 (50 ... 59: unchanged technical data and pin assignment) | 5X |
| Seal material | ||
| 06 | NBR seals | no code |
| FKM seals | V | |
| Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) | ||
| Corrosion resistance (outside; thick film passivated according to DIN 50979 Fe//Zn8//Cn//T0) | ||
| 07 | None (valve housing primed) | no code |
| Improved corrosion protection (240 h salt spray test according to EN ISO 9227) | J3 | |
| Special version | ||
| 08 | Standard | no code |
| Control open by external port G1/4 (only version "A" and "B") | SO40 | |
| Control spool unloaded to port T | SO60 | |
| 09 | Further details in the plain text | * |
Technical data
(For applications outside these values, please consult us!)
general
| Size | 16 | ||
| Weight | kg | 6.5 | |
| Installation position | any | ||
| Ambient temperature range | NBR seals | °C | -30 … +80 |
| FKM seals | °C | -20 … +80 | |
| MTTFD values according to EN ISO 13849 | Years | 150 1) | |
| 1) | For further details, see data sheet 08012 |
hydraulic
| Size | 16 | ||
| Maximum operating pressure | bar | 315 | |
| Cracking pressure (in free direction) | See characteristic curves | ||
| Maximum flow | l/min | 300 | |
| Direction of flow | see symbols | ||
| Hydraulic fluid | see table "Hydraulic fluid" | ||
| Hydraulic fluid temperature range (at the valve working ports) | NBR seals | °C | -30 … +80 |
| FKM seals | °C | -20 … +80 | |
| Viscosity range | mm²/s | 2.8 … 500 | |
| Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) | Class 20/18/15 | ||
| Area ratio | With pre-opening | A3/A2 ~ 1/12 (see sectional drawing) | |
| Version "SO60" | A1/A4 ~ 1/7 (see sectional drawing) | ||
| 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:
| |||||
| 1) | Not recommended for corrosion-protected version "J3" (contains zinc) |
Notice:
Selection of optimal sealing material (see "Type code") also depends on the type of hydraulic fluid used.
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qV characteristic curves
Symbols/Circuit diagrams
| ① | component side |
| ② | plate side |
Version "A"
Version "-"
Version "B"
Version "A…SO40"
Version "A…SO60"
Dimensions
Dimensions in mm
 |
| Required surface quality of the valve contact surface |
| Version | Cracking pressure in bar | Leakage-free blocking in channel | L1 in mm | L2 in mm |
| "no code" | 3; 5 | „–“ | 10 | 10 |
| 7,5; 10 | „–“ | 36,5 | 36,5 | |
| 3; 5 | A | 10 | 8,5 | |
| 3; 5 | B | 8,5 | 10 | |
| 7,5; 10 | A | 36,5 | 8,5 | |
| B | 8,5 | 36,5 | ||
| „SO40“ | 3; 5 | A, B | 10 | 10 |
| 7,5; 10 | A | 36,5 | 10 | |
| B | 10 | 36,5 | ||
| „SO60“ | 3; 5 | A | 10 | 8,5 |
| 3; 5 | B | 8,5 | 10 | |
| 7,5; 10 | A | 36,5 | 8,5 | |
| B | 8,5 | 36,5 |
| ① | component side |
| ② | plate side |
| 1 | Name plate |
| 2 | Through holes for valve mounting |
| 3 | Identical seal rings for ports A, B, P and T |
| 4 | Identical seal rings for ports X, Y, L |
| 5 | Locking pins |
| 6 | Locating holes |
| 7 | Porting pattern according to ISO 4401-07-0-05 |
| 8 | Plug screw SW41, Tightening torque MA = 70 Nm |
Valve mounting screws (separate order)
| Size | Quantity | Hexagon socket head cap screws | Material number |
| 16 | 4 | ISO 4762 - M10 10.9 | - |
| 2 | ISO 4762 - M6 10.9 | - |
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.
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