Norgren XSZ Series User Manual

Norgren Hardware

N/en 5.14.100.01

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

Our policy is one of continued research and development. We therefore reserve the right to amend,

10/14

2002-5313h

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)

Medium:
Compressed air, filtered ≤ 50 µm,

lubricated or non-lubricated
Suitable oils:
Shell Tellus S2 MA 32,
ExxonMobil Febis K 32 or
comparable oil with
DVI values < 8 (DIN ISO 1817) and
ISO viscosity class 32-46
(DIN 51519)

Operating Pressure:
2 to 10 bar
For more details please see
table overleaf.

Temperature range:
-10 to +60°C
Air supply must be dry enough
to avoid ice formation at
temperatures below +2°C

Mounting position:
Preferably vertically

Additional equipment:
Soft clutch module
- documentation no 5.14.320
Soft brake module
- documentation no 5.14.350
Safety silencer
- documentation no
5.14.525 and 5.14.550
Failure indication elements
- documentation no 5.14.420

Technical features

Materials:
Body: aluminium
Seals: PUR, NBR

2 (A)

2 (A )

1 (P)

3 (R)