Norgren CR043C 3/2 Lockout Valve - Integral Silencer
Part Number: CR043C
Quick Summary
CR043C lockout valve provides OSHA-compliant lockout/tagout control for compressed air systems. Maintenance teams struggle with unexpected actuator movement during servicing, risking injuries and downtime; this valve prevents that by locking in the closed position. SIL, CE and IP ratings are common certifications for safety valves; verify exact certifications for your region and application. The aluminium body with nitrile elastomers delivers durability in rugged environments, while the integral silencer reduces noise and supports safer, more efficient plant operation. With a G1/2 port and a full-flow 3/2 operation, it integrates easily into standard piping and simplifies multi-machine lockout procedures.
Product Information
Extended Description
CR043C Norgren: 3-way, manually operated, full flow lockout valves can be locked in the closed position with a padlock | Helps you comply to OSHA regulations, as they relate to OSHA regulation 29 CFR Part 1910, standard for lockout/tagout procedures
Medium
Compressed air
Operating Temperature
-30 ... 80 °C, -20 ... 175 °F
Port Size
G1/2
Valve operation
3/2
Flow
8200 l/m, 289.58 scfm
Materials - Body
Aluminium
Materials - Elastomers
Nitrile rubber
Range
CR04
Brand
IMI Norgren
MB006B
Quietaire heavy duty silencer male, R3/4
Feature: 3/2, manually operated lockout valve with full-flow design → Business Impact: enables rapid, reliable isolation without restricting performance → Application: ideal for compressed air lines in automation and maintenance. Feature: Lockout capability with padlock compatibility → Business Impact: supports OSHA 29 CFR Part 1910 lockout/tagout requirements, reducing incident risk → Application: safe servicing of actuated devices in production lines. Feature: G1/2 port size and standard 3/2 configuration → Business Impact: easy integration into existing manifolds and piping → Application: retrofit on common automation lines without custom adapters. Feature: Aluminium body with nitrile elastomer seals → Business Impact: rugged durability, good chemical resistance, longer service life → Application: harsh industrial environments and frequent cycle operation. Feature: Integrated MB006B silencer (Quietaire heavy duty, R3/4) → Business Impact: lower noise levels, improved workplace comfort, potential regulatory noise compliance → Application: noisy plant areas and safety-critical installations. Feature: CR04 range compatibility (IMI Norgren) → Business Impact: scalable with other CR04 components, streamlined spares and maintenance → Application: modular valve islands and expanding control architectures.
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FAQs
CR043C uses a standard G1/2 port, 3/2 valve arrangement, allowing straightforward integration into existing compressed air circuits. When installing, ensure correct orientation for full-flow operation and verify that the padlock can be secured in the closed position. The aluminium body and nitrile elastomer seals provide robust performance in typical automation environments, minimizing leak paths and maintenance calls.
Key specs include a 3/2 valve operation with full-flow capability, allowing uninterrupted air passage when open and a secure closed state when locked. The operating temperature range is -30 to 80 °C, port size is G1/2, and the nominal flow is about 8200 l/m. Materials are aluminium for the body and nitrile rubber for elastomer seals, supporting durability in rugged plants.
Yes. The CR043C is explicitly described as a three-way lockout valve that can be locked in the closed position with a padlock, aligning with OSHA lockout/tagout practices outlined in 29 CFR Part 1910. This enables safe maintenance across automated lines while reducing the risk of unexpected actuator movement.
Certification data for SIL, CE or IP ratings is not specified in the provided data. Given the valve’s use in industrial automation, verify CE marking and IP protection requirements for your region, and check whether any SIL or other safety certifications are needed for your safety system design and risk assessment.
The MB006B Quietaire heavy-duty silencer reduces noise in the valve’s exhaust path, contributing to a safer and more comfortable work environment. For elastomer seals, inspect nitrile rubber components for wear or degradation in harsh environments and replace as needed to maintain leak-tight performance and reliable lockout operation.