Herion XSZ | Double Safety Valves for Presses

XSZ10 and XSZ20 in stock
12 months warranty
PL e – EN ISO 13849-1
Herion and Norgren XSZ codes: send us the nameplate and we check the right version

XSZ8 – XSZ505 double-body series, with ISO G and NPT codes

PL e, cat. 4performance level according to EN ISO 13849-1 (solenoid version)

G1/4 – G2ports, NPT versions also available

2–10 baroperating pressure, depending on the series

up to 3,300 m³/hexhaust flow 2 → 3 (XSZ50)

24 V DC / 230 V ACIP65 solenoids, 100% duty cycle

Prefer to talk to a technician? +39 0331 772410 · info@interfluid.net

Herion XSZ double-body safety valves — **Herion XSZ**Double-body safety valves (now IMI Herion) for presses with pneumatic clutch/brake and 3-way safety functions.

Herion XSZ double safety valves

Herion XSZ safety valves (now IMI Herion) are double valves designed to safely control mechanical presses with pneumatic clutch/brake systems and other 3-way safety functions. Two valves work in parallel and monitor each other: if one of the two bodies fails to switch correctly, the air is exhausted and the machine goes to a safe state, with no residual pressure.

With the appropriate application, the solenoid version achieves performance level PL e (category 4) according to EN ISO 13849-1 for the function “pressure building up from 1 to 2 and pressure dropping from 2 to 3”. The pneumatically actuated versions integrate into two-hand control systems according to EN 574. The range includes 3/2 and 5/2-way valves, pneumatically or solenoid actuated, with ports from G1/4 to G2 (NPT versions also available). Self-monitoring is dynamic and needs no additional electrical signals, and the overlap on mechanical presses is easy to adjust.

Technical data by series

Data for the solenoid version with ISO G threads, taken from the IMI Herion catalogue. For NPT and pneumatically actuated versions, see the full catalogue in the Download section.

Series	Operating pressure (bar)	Flow 1 (P) → 2 (A) (m³/h)	Exhaust flow 2 (A) → 3 (R) (m³/h)	Port 1 (P)
XSZ8	3 – 10	77	93	G1/4
XSZ10	2 – 10	190	390	G1/2
XSZ20	2 – 8	200	795	G3/4
XSZ32	2 – 8	440	1,380	G1
XSZ50	2 – 8	1,100	3,300	G1 1/2

Common features

Medium	compressed air filtered ≤ 50 µm, lubricated or non-lubricated
Ambient and media temperature	-10 °C to +60 °C
Materials	aluminium body, PUR and NBR seals
Solenoids	24 V DC or 230 V AC, IP65 protection, 100% duty cycle, DIN EN 175301-803 form A connector
Recommended mounting	upright, with solenoids on top
Available options	damping units, soft-start units, soft-braking units, threaded or flanged safety silencers, signalling devices

Most requested Herion XSZ codes

Most requested Herion XSZ codes, with ISO G or NPT threads.

Series	ISO G code	NPT code	Voltage	Port 1 (P)	Port 2 (A)	Port 3 (R)
XSZ10	2492900.0200	2492920.0200	AC	1/2	1/2	3/4
XSZ10	2492901.0200	2492921.0200	DC	1/2	1/2	3/4
XSZ20	2493000.0800	2493020.0800	DC/AC	1/2	3/4	1
XSZ20	2493040.0800	2493045.0800	DC/AC	3/4	3/4	1
XSZ20	2493042.0800	–	DC/AC	3/4	1	1
XSZ32	2493130.0800	2493120.0800	DC/AC	1	1	1 1/2
XSZ32	2493134.0800	–	DC/AC	1	1 1/2	1 1/2
XSZ50	2493230.0800	2493220.0800	DC/AC	1 1/2	2	2

Advantages: intrinsic self-protection (no residual pressure in case of failure), dynamic self-monitoring with no additional electrical checks, high exhaust capacity for fast stopping, less downtime and greater operator safety. Can't find your code, or need to replace an existing safety valve? Send us the code or nameplate data and we will check the right version for you.

Herion XSZ safety valves: frequently asked questions

What are Herion XSZ safety valves used for?

They safely control mechanical presses with pneumatic clutch/brake systems and other 3-way safety functions. Two valve bodies work in parallel and monitor each other: if one fails to switch correctly, the air is exhausted and the machine goes to a safe state, with no residual pressure.

What is the difference between XSZ8, XSZ10, XSZ20, XSZ32 and XSZ50?

Flow and port sizes. On the solenoid version with ISO G threads, the exhaust flow 2 → 3 is 93 m³/h for the XSZ8 (G1/4), 390 for the XSZ10 (G1/2), 795 for the XSZ20 (G3/4), 1,380 for the XSZ32 (G1) and 3,300 for the XSZ50 (G1 1/2).

Are XSZ valves solenoid valves or pneumatic valves?

Both: the range includes 3/2 and 5/2-way valves, pneumatically or solenoid actuated. The solenoid version runs on 24 V DC or 230 V AC with IP65 protection and a 100% duty cycle; the pneumatically actuated versions integrate into two-hand control systems according to EN 574.

Which XSZ valves do you keep in stock?

XSZ10 and XSZ20 are usually available from stock. XSZ32 and XSZ50 are available on order. Send us the code to confirm current availability: a technician will reply within 24 working hours.

I need to replace a Herion or Norgren XSZ valve: what should I send you?

The code or nameplate data of the existing valve. To pick the right version we need the series, thread (ISO G or NPT), voltage (DC or AC) and ports 1 (P), 2 (A) and 3 (R). If your code carries the Norgren brand, send it anyway: we will check the right version for you.

What safety level do XSZ valves reach?

With the appropriate application, the solenoid version achieves performance level PL e (category 4) according to EN ISO 13849-1 for the function pressure building up from 1 to 2 and pressure dropping from 2 to 3.

Can't find the code of your Herion XSZ valve?Send us the code or nameplate data, also for a spare or replacement: we will check the right version and give you price and availability.

Request price and availability

Herion XSZ safety valves (now IMI Herion) are double valves designed to safely control mechanical presses with pneumatic clutch/brake systems and other 3-way safety functions. Two valves work in parallel and monitor each other: if one of the two bodies fails to switch correctly, the air is exhausted and the machine goes to a safe state, with no residual pressure.

With the appropriate application, the solenoid version achieves performance level PL e (category 4) according to EN ISO 13849-1 for the function "pressure building up from 1 to 2 and pressure dropping from 2 to 3". The pneumatically actuated versions integrate into two-hand control systems according to EN 574.

The range includes 3/2 and 5/2-way valves, pneumatically or solenoid actuated, with ports from G1/4 to G2 (NPT versions also available). Self-monitoring is dynamic and needs no additional electrical signals, and the overlap on mechanical presses is easy to adjust.

Advantages

Intrinsic self-protection: no residual pressure in case of failure
Dynamic self-monitoring, with no additional electrical checks
High exhaust capacity for fast stopping
Less downtime and greater operator safety

Available options

Damping units, soft-start units, soft-braking units, threaded or flanged safety silencers, signalling devices.

Data for the solenoid version with ISO G threads, taken from the IMI Herion catalogue. For NPT and pneumatically actuated versions, see the full catalogue in the Download section.

Series	Operating pressure (bar)	Flow 1 (P) → 2 (A) (m³/h)	Exhaust flow 2 (A) → 3 (R) (m³/h)	Port 1 (P)
XSZ8	3 – 10	77	93	G1/4
XSZ10	2 – 10	190	390	G1/2
XSZ20	2 – 8	200	795	G3/4
XSZ32	2 – 8	440	1,380	G1
XSZ50	2 – 8	1,100	3,300	G1 1/2

Common features

Medium: compressed air filtered ≤ 50 µm, lubricated or non-lubricated
Ambient and media temperature: -10 °C to +60 °C
Materials: aluminium body, PUR and NBR seals
Solenoids: 24 V DC or 230 V AC, IP65 protection, 100% duty cycle, DIN EN 175301-803 form A connector
Recommended mounting: upright, with solenoids on top

Most requested Herion XSZ codes, with ISO G or NPT threads.

Series	ISO G code	NPT code	Voltage	Port 1 (P)	Port 2 (A)	Port 3 (R)
XSZ10	2492900.0200	2492920.0200	AC	1/2	1/2	3/4
XSZ10	2492901.0200	2492921.0200	DC	1/2	1/2	3/4
XSZ20	2493000.0800	2493020.0800	DC/AC	1/2	3/4	1
XSZ20	2493040.0800	2493045.0800	DC/AC	3/4	3/4	1
XSZ20	2493042.0800	–	DC/AC	3/4	1	1
XSZ32	2493130.0800	2493120.0800	DC/AC	1	1	1 1/2
XSZ32	2493134.0800	–	DC/AC	1	1 1/2	1 1/2
XSZ50	2493230.0800	2493220.0800	DC/AC	1 1/2	2	2

Can't find your code, or need to replace an existing safety valve? Send us the code or nameplate data and we will check the right version for you – request a quote.

Herion XSZ safety valves

Series	Average stock	Discover online availability
XSZ10	✅ Usually available	⌛ Coming soon online
XSZ20	✅ Usually available	⌛ Coming soon online
XSZ32	🚚 Available on order	⌛ Coming soon online
XSZ50	🚚 Available on order	⌛ Coming soon online

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Herion XSZ safety valves XSZ10, XSZ20, XSZ32 and XSZ50 double valves for presses, also Norgren codes, PL e (EN ISO 13849-1)

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