XSz 8 ... XSz 50 3/2 way fail-safe safety valve, solenoid actuated For mechanical presses and other safety applications G 1/4 ... G2, 1/4 ... 2 NPT
Double valve control system, inherently fail-safe without residual pressure
Dynamic self monitoring
With the appropriate application, performance level „e” (cat. 4) of DIN EN ISO 13849-1 is achieved for the safety function “Pressure building up from ‘1’ to ‘2’ and pressure dropping from ‘2’ to ‘3’”. DGUV, OSHA, CSA and other approvals
For use with pneumatic clutch and brake systems and other 3-way safety functions
Fast exhaust capability
Improves safety and reduces downtime
Quick and easy adjustment of ‘overlap’ on mechanical presses
No additional electrical monitoring required
XSz safety valves are also available as 5/2 valves (DN8 & 10) and pneumatically operated (DN10)
Technical features
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D |
3 (R) |
2 (A) |
1 (P) |
21 (A1) |
Medium: |
Temperature range: |
Additional equipment: |
Compressed air, filtered ≤ 50 µm, |
-10 to +60°C |
Soft clutch module |
lubricated or non-lubricated |
Air supply must be dry enough |
- documentation no 5.14.320 |
Suitable oils: |
to avoid ice formation at |
Soft brake module |
Shell Tellus S2 MA 32, |
temperatures below +2°C |
- documentation no 5.14.350 |
ExxonMobil Febis K 32 or |
Mounting position: |
Safety silencer |
comparable oil with |
Preferably vertically |
- documentation no |
DVI values < 8 (DIN ISO 1817) and |
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5.14.525 and 5.14.550 |
ISO viscosity class 32-46 |
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Failure indication elements |
(DIN 51519) |
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- documentation no 5.14.420 |
Operating Pressure: |
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2 to 10 bar |
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For more details please see |
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table overleaf. |
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Materials:
Body: aluminium Seals: PUR, NBR
10/14 |
2002-5313h |
Our policy is one of continued research and development. We therefore reserve the right to amend, |
N/en 5.14.100.01 |
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without notice, the specifications given in this document. © 2014 Norgren GmbH |
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XSz 8 ... XSz 50
Technical data
Series |
Voltage |
Pressure |
Flow |
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Port sizes |
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Weight |
Model * |
Model * |
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range |
1 (P) » 2 (A) |
2 (A) » 3 (R) |
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G-thread |
NPT-thread |
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(bar) |
(m3/h) |
(m3/h) |
1 (P) |
2 (A) |
2-1 (A-1) |
3 (R) |
(kg) |
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XSz 8 *1) |
d.c./a.c. |
3 to 10 |
77 |
93 |
1/4” |
1/4” |
— |
1/4” |
1,1 |
24928063052 |
24928053052 |
XSz 8 *1) |
d.c./a.c. |
3 to 10 |
77 |
98 |
1/4” |
1/4” |
— |
3/8” |
1,1 |
24928083052 |
24928073052 |
XSz 10 *2) |
d.c./a.c. |
2 to 10 |
190 |
390 |
1/2” |
1/2” |
(1/2”) |
3/4” |
2,5 |
24929323052 |
24929333052 |
XSz 10 *4) |
d.c./a.c. |
2 to 10 |
190 |
390 |
1/2” |
1/2” |
(1/2”) |
3/4” |
2,5 |
24929303052 |
24929313052 |
XSz 20 *2) |
d.c./a.c. |
2 to 8 |
230 |
840 |
1/2” (3/4”) |
3/4” |
1” |
1” |
4,7 |
24930320200 |
— |
XSz 20 *2) |
d.c./a.c. |
2 to 8 |
230 |
840 |
1/2” (3/4”) |
3/4” |
— |
1” |
4,7 |
— |
24930330200 |
XSz 20 *4) |
d.c./a.c. |
2 to 8 |
230 |
840 |
1/2” (3/4”) |
3/4” |
1” |
1” |
4,7 |
24930300200 |
— |
XSz 20 *4) |
d.c./a.c. |
2 to 8 |
230 |
840 |
1/2” (3/4”) |
3/4” |
— |
1” |
4,7 |
— |
24930310200 |
XSz 32 *2) |
d.c./a.c. |
2 to 8 |
495 |
1800 |
1” |
1” |
1 1/2” |
1 1/2” |
7,5 |
24931050800 |
24931070800 |
XSz 32 *2) |
d.c./a.c. |
2 to 8 |
495 |
1800 |
1” |
1” |
1 1/2” |
1 1/2” |
7,5 |
24931060800 *3) |
24931180800 *3) |
XSz 32 *4) |
d.c./a.c. |
2 to 8 |
495 |
1800 |
1” |
1” |
1 1/2” |
1 1/2” |
7,5 |
24931300800 |
24931200800 |
XSz 32 *4) |
d.c./a.c. |
2 to 8 |
495 |
1800 |
1” |
1” |
1 1/2” |
1 1/2” |
7,5 |
24931310800 *3) |
— |
XSz 50 *4) |
d.c./a.c. |
2 to 8 |
1100 |
3300 |
1 1/2” |
2” |
— |
2” |
15 |
24932300800 |
24932200800 |
XSz 50 *4) |
d.c./a.c. |
2 to 8 |
1100 |
3300 |
1 1/2” |
2” |
— |
2” |
15 |
24932310800 *3) |
24932180800 *3) |
Port sizes in brackets are plugged.
* To order please insert voltage requested for each valve. All solenoids are delivered without plugs. *1) XSz 8 valves are delivered with silencer.
*2) Valves delivered with integrated silencer and without flange (R ports). *3) With pressure balance Model 1028100.
*4) Valves delivered without silencer and with flange.
Technical data – solenoids |
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Circuit diagrams |
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Model |
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0200, 0800, and 3052 |
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Standard voltages |
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24 V d.c. and 230 V a.c., other on request |
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Duty cycle |
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100% ED |
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Protection class |
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IP65 |
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Model |
Power |
Current |
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Electrical connection |
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consumption |
V a.c. |
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DIN EN 175301-803 |
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V d.c. |
Inrush |
Hold |
(DIN 43650) |
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0200 |
11 W |
22 VA |
15 VA |
Form A |
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0800 |
16 W |
50 VA |
27 VA |
Form A |
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3052 |
4,8 W |
12 VA |
8,5 VA |
Form B |
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Accessories |
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Series |
Plug |
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Silencer |
Integrated silencer |
Integrated silencer |
High efficiency silencer |
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XSz 8 |
0680003 |
MB002B (G 1/4), MB003B (G 3/8) |
— |
— |
— |
XSz 8 |
0680003 |
MB002A (1/4 NPT), MB003A (3/8 NPT) |
— |
— |
— |
XSz 10 |
0680003 |
— |
0016422 |
— |
0016420 |
XSz 20 |
0570275 |
— |
— |
0016622 |
0016520 |
XSz 32 |
0570275 |
— |
— |
0016622 |
0016620 |
XSz 50 |
0570275 |
— |
— |
— |
0016720 |
Caution: the safety is related to the quality of the silencer, use only Norgren Herion original silencers |
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Series |
Flange |
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XSz 50 |
0547365 (port P, G1 1/2, and pressure |
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switches port G1/4) |
0545005 (port A, G2, and pressure switches port G1/4)
N/en 5.14.100.02 |
Our policy is one of continued research and development. We therefore reserve the right to amend, |
2002-5313h |
10/14 |
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without notice, the specifications given in this document. © 2014 Norgren GmbH |
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XSz 8 ... XSz 50
Spare Parts
Series |
Model (G-thread) |
Model (NPT-thread) |
Spare parts kits |
Spare valve without base |
XSz 8 |
24928063053 |
24928053053 |
0101534 |
2493805 |
XSz 10 |
24929323053 |
24929333053 |
0110641 |
2493930 |
XSz 20 |
24930320201 |
— |
0110649 |
2494030 |
XSz 20 |
— |
24930330201 |
0110649 |
2494030 |
XSz 32 |
24931050801 |
24931070801 |
0558631 |
2494130 |
XSz 32 |
24931060801 |
24931180801 |
0558631 |
2494131 |
XSz 50 |
24932300801 |
24932200801 |
0542576 |
— |
XSz 50 |
24932310801 |
24932180801 |
0542576 |
— |
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3 (R) |
3 (R) |
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3 (R) |
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2 (A) |
2 (A) |
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2 (A) |
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1 (P) |
1 (P) |
1 (P) |
Solenoids de-energized:
A port is exhausted. P port is closed, no connection from P to A. No residual pressure on port A as port A is freely exhausted through port R. No acting pressure on port A.
Solenoids energized:
Pilots are synchronously energised. Connection from port P to A. Working pressure on A. No passage from P to R. Dynamic self monitoring of both pilot systems, checking each other at each cycle for proper functioning.
Malfunction:
Pilots non-synchronously energised. Dynamic monitor notices failure operation and prevents the pistons from giving connection from P to A. Synchronously port A exhausts through R. No residual pressure
remains in the system since P and A are not connected. The pilot line has lost the pressure and is locked.
1 (P) = Air pressure port / 2 (A) = Power port (clutch / brake) / 3 (R) = Exhaust
Norgren Herion XSz Safety valves comply with the Category IV of DIN EN ISO 13849-1, if the operating system has been designed and realised according to Category IV.
10/14 |
2002-5313h |
Our policy is one of continued research and development. We therefore reserve the right to amend, |
N/en 5.14.100.03 |
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without notice, the specifications given in this document. © 2014 Norgren GmbH |
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