A pressure alert valve (PAV) 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 provide greater safety by allowing trapped pressure to bleed off while maintaining 90% thread engagement, thus decreasing the risk to personnel and surrounding equipment.
Figure 500 and 500R closures accommodate most pipeline vessel applications, with versions for horizontal, vertical and angled installations. Easily field-weldable, both models achieve and airtight seal with an elastomeric o-ring set into the face of the hub. Standard materials of construction conform to ASTM specifications and are permitted under ASME Section VIII, Division 1 Boiler and Pressure Vessel Code. Figure 500 Closures are available in sizes 2 in.- 14 in., while Figure 500R Closures are available in sizes 16 in. and larger.
R & M Energy Systems, 363 N. Sam Houston Parkway, Suite 950, Houston, TX 77060. Tel: 281-765-4700. Fax: 281-445-7491.