Norgren CR044B 3/2 Valve - Lockout with Integral Silencer
Part Number: CR044B
Quick Summary
Norgren CR044B is a 3/2 lockout valve for safe, blocked-position control in pneumatic systems. This compact, manually operated valve is designed to prevent unintended actuation and support rapid isolation in production lines. The product helps address downtime and safety risks from accidental valve cycling, enabling reliable padlockable closure for compliant lockout/tagout practices. Regulatory relevance includes OSHA lockout/tagout requirements (29 CFR Part 1910) and ISO 13849 functional safety considerations referenced in the Functional Safety brochure. Its aluminum body and nitrile elastomer seals deliver durability in harsh environments, while the G1 port size and integral silencer improve installation efficiency and reduce noise, supporting overall plant productivity and worker safety.
Product Information
Extended Description
CR044B 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
Valve operation
3/2
Flow
14300 l/m, 505 scfm
Materials - Body
Aluminium
Materials - Elastomers
Nitrile rubber
Range
CR04
Brand
IMI Norgren
MB008B
Quietaire heavy duty silencer male, R1
Feature: 3/2 valve configuration with full-flow path. Benefit: Quick, clean actuation and reliable isolation, reducing cycle times and minimizing pressure drop in compressed air lines. Application: Suitable for machine guarding circuits in automated cells. Feature: Padlock-ready lockout in the closed position. Benefit: Enhanced safety compliance by preventing unauthorized re-energization, lowering incident risk during maintenance. Application: Safety interlocks on conveyors and press lines. Feature: Integral MB008B silencer. Benefit: Noise reduction improves operator comfort and workplace compliance with noise limits in control panels. Application: Environments with high air discharge noise. Feature: Aluminum body with nitrile elastomer seals. Benefit: Robust, corrosion-resistant construction plus flexible sealing for long service life. Application: Industrial automation centers exposed to dust, humidity, and temperature variation. Feature: Port size G1 and consistent 3/2 operation. Benefit: Easy integration with standard pneumatic manifolds and quick retrofit. Application: Retrofitting existing circuits in OEM machinery. Feature: Temperature range -30 to 80 °C (-20 to 175 °F). Benefit: Broad operating envelope supports cold and hot production floors. Application: Food & packaging lines, automotive assembly, and general manufacturing. Feature: Flow 14300 L/min (505 SCFM). Benefit: Sufficient supply for actuation of multiple cylinders without pressure losses. Application: High-demand valve banks and safety-isolating manifolds.
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FAQs
Install the CR044B by threading it into a standard G1 port manifold or panel mount, ensuring the valve is oriented to allow padlock access to the closed position. Tighten fittings to manufacturer torque specs, connect the medium (compressed air) lines, and verify the padlock slot is unobstructed before commissioning. The integral silencer should remain in place to minimize discharge noise.
The CR044B delivers a flow of 14,300 L/min (505 SCFM) and operates from -30 to 80 °C (-20 to 175 °F). It uses a plastic-safe nitrile elastomer seal and an aluminum body, making it suitable for typical industrial compressed air circuits across a range of environments.
Yes. The valve is designed for lockout/tagout applications, allowing a padlock to secure the valve in the closed position. This supports OSHA Part 1910 lockout requirements and helps prevent unexpected actuation during maintenance, reducing risk and improving personnel safety in production lines.
Regulatory relevance includes OSHA lockout/tagout guidance (29 CFR Part 1910) for safe maintenance. Norgren provides a Functional Safety brochure referencing ISO 13849 for safety considerations. While CE or IP ratings are not specified here, the product's safety-focused design aligns with functional safety practices and industrial safety standards; confirm with the supplier for any local certification requirements.
Routinely inspect the aluminum body and nitrile elastomer seals for signs of wear or cracking, especially after maintenance cycles. Because the valve integrates a silencer and padlockable mechanism, ensure the silencer remains clear of debris and the padlock engagement is unobstructed. With proper panel sealing and periodic leak checks, you can maximize reliability and minimize unplanned downtime.