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XSZ8 (Part No: 2492806000000000)
IMI Norgren (Herion)
The Norgren XSz8 is a 3/2-way solenoid pilot-operated pneumatic safety dual valve designed primarily for clutch and brake control systems on mechanical power presses. It features self-monitoring functionality that dynamically checks the actuation time difference between both valve elements on every switching cycle — if the time difference exceeds 0.5 seconds, the valve immediately blocks pressure output and exhausts to atmosphere. With a G1/4 port connection, operating pressure range of 3-10 bar, and IP65 protection rating, it delivers intrinsic safety without requiring an external electrical monitoring unit. Certified to DIN EN ISO 13849-1 Performance Level "e" (Category 4) and compliant with EN 692, EN 954-1, DGUV, OSHA, CSA, and SUWA standards. The aluminum body with PUR/NBR seals ensures reliable operation in compressed air systems with filtration to 50 μm. Typical applications include mechanical press clutch/brake systems and other 3-way safety-critical pneumatic functions.
Q: What is the primary application of the Norgren XSz8?
The XSz8 is primarily used as a safety dual valve for pneumatic clutch and brake control systems on mechanical power presses and other safety-critical 3-way pneumatic applications.
Q: What safety certification level does the XSz8 achieve?
It achieves Performance Level "e" (Category 4) per DIN EN ISO 13849-1, the highest safety level for pneumatic control systems.
Q: Does the XSz8 require an external monitoring unit?
No, the XSz8 features built-in dynamic self-monitoring. It detects valve element timing differences >0.5 seconds and automatically exhausts pressure without external controllers.
Q: What happens if power is lost to the XSz8?
The valve is intrinsically fail-safe — upon power loss or internal fault detection, it immediately blocks pressure output and exhausts the downstream circuit to atmosphere, ensuring zero residual pressure in the protected system.
Q: What air quality is required for proper operation?
The compressed air must be filtered to ≤50 μm, and can be either lubricated or non-lubricated. Recommended filter elements should be used upstream.
Q: What are the available electrical voltage options?
Common voltage options include 24 V DC and 120 V AC. Verify the specific sub-model number (e.g., 2492806305202400 for 24 V DC, 2492807305312060 for 120 V AC).
Q: Can the XSz8 be installed in any orientation?
The preferred mounting orientation is vertical with the solenoid coil on top, ensuring proper drain and reliable actuation.
Q: What is the lead time for XSz8 safety valves?
Lead time is approximately 56 working days from the Norgren factory, though inventory may be available through distributors.
IMI Norgren (Herion) XSZ8 | |
XSz 8 | 3/2-Way Safety Dual Valve, G1/4, 3-10 bar, Cat 4 PL e | |
Feature | Specification |
Manufacturer | IMI Norgren (Herion) |
Model Number | XSZ8 (2492806000000000) |
Valve Type | 3/2-Way Solenoid Pilot-Operated Safety Dual Valve |
Function | Pneumatic Clutch & Brake Control |
Medium | Compressed Air, filtered ≤50 μm, lubricated or non-lubricated |
Operating Pressure | 3 to 10 bar (44 to 145 psi) |
Port Connection | G1/4 |
Operating Temperature | -10 to +60°C (14 to 140°F) |
Body Material | Aluminum |
Seal Material | Polyurethane (PUR) / NBR |
Protection Rating | IP65 |
Dimensions (H×L×W) | ~70 × 127 × 100 mm |
Mounting Orientation | Preferably vertical, solenoid coil on top |
Self-Monitoring | Dynamic — detects timing diff <0.5s per cycle |
Fail-Safe | Exhausts to atmosphere on power loss or fault |
Safety Performance Level | PL e (Category 4) per DIN EN ISO 13849-1 |
Compliance Standards | EN 692, EN 954-1, DGUV, OSHA, CSA, SUWA |
Voltage Options | 24 V DC, 120 V AC (varies by sub-model) |
Country of Origin | Germany / UK |
Applications | Mechanical Press Clutch/Brake Systems, 3-Way Safety-Critical Pneumatic |
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