GT-7 - Griftan Coarse Thread Cylinder Safety Cap 3-1/8 Inch

Regulatory Compliance and Technical Specifications

The Griftan GT-7 Coarse Thread Safety Cap is a critical safety component designed to meet the rigorous standards established by the Department of Transportation (DOT), the Occupational Safety and Health Administration (OSHA), and the Mine Safety and Health Administration (MSHA). Engineered specifically for high-pressure gas cylinders, this cap ensures that the main valve remains protected during storage and transportation, a mandatory requirement for industrial gas handling. The unit is UL Listed, verifying its structural integrity and ability to withstand impact, thereby preventing catastrophic valve failure in the event of a cylinder tipping over.

Technically, the GT-7 is manufactured to fit standard high-pressure cylinders featuring a 3-1/8 inch collar diameter. It utilizes a coarse thread pitch of 7 threads per inch (TPI), distinguishing it from fine-thread variants and ensuring compatibility with a broad range of industrial gas cylinders. The design allows the cap to be secured firmly over the valve assembly, creating a robust barrier against physical damage. Furthermore, the Griftan design explicitly supports transportation protocols where the main valve must be in the off position, providing a compliant solution for logistics and supply chain operations involving hazardous gases.

Beyond basic impact protection, the GT-7 incorporates a security feature designed to mitigate equipment loss. The assembly includes a lynch pin that secures the cap; however, for enhanced security, this pin can be replaced with a standard #3 Master Lock. This modification effectively locks the cap in place, serving as a deterrent against the theft of the regulator or the unauthorized use of the cylinder contents. This dual focus on physical safety and asset security makes the GT-7 an essential specification for facility managers and safety officers tasked with maintaining compliant and secure industrial environments.