Quick-opening closures offer safety, simplicity and accessibility

Yale Figure 500 and 500R quick-opening closures provide rugged construction, safety, simplicity, and accessibility. Designed for fast and economical accessibility to pipelines and other vessel applications, Yale Figure 500 closures are available in 2- through 4-in. sizes, while Figure 500R closures are offered in 16-in. sizes and larger.

A pressure alert valve is standard equipment on all 6-in. and larger closures. Removing the valve stem from the PAV body warns the operator of any residual pressure in the vessel before the closure cap is loosened. Strong Acme cap threads are said to provide greater safety by allowing trapped pressure to bleed off while maintaining 90% thread engagement — decreasing the risk to personnel and surrounding equipment.

Figure 500 and 500R closures accommodate most pipeline and vessel applications — with versions for horizontal, vertical and angled installations. Easily field-weldable, both models achieve an airtight seal with an elastomeric O-ring set into the face of the hub. In addition, standard materials of construction conform to ASTM specifications and are permitted under ASME Section VIII, Division 1 Boiler and Pressure Vessel Code.

R&M Energy Systems, 10586 U.S. Highway 75 North, Willis, TX 77378

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