SigmaHLR

Since 1968, SigmaHLR has engineered and manufactured hydraulic and pneumatic safety control systems trusted by the world’s toughest industries. From offshore platforms to onshore production sites, our ISO 9001:2015-certified products protect people, equipment, and production in mission-critical environments. We specialize in hydraulic logic controls, shutdown systems, and fail-safe pneumatic assemblies that meet the highest performance standards. Our products are used across oil & gas, pipeline, energy, and heavy industrial sectors—where reliability isn’t optional. Every SigmaHLR solution is engineered, assembled, and tested in the USA with a focus on precision, durability, and safety. We combine technical expertise, fast delivery, and field-proven performance to support operations around the globe. Whether you need custom panel design, redundant control solutions, or standard safety instrumentation—we help you control the critical. We are a Sturrock & Robson Group Services USA company.