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The 221 series manway cover is hinged, providing a fixed pivot point for the cover. This feature keeps the cover aligned so it reseats properly after venting. Unlike covers which use less reliable cable restraints, the 221 series cannot separate from the base. This model can also be easily lifted open, therby providing a large, unobstructed passage for rapid entry and easy access to the tank. The Model 221PV incorporates a spring loaded vacuum relief valve integral to the cover assembly. Additional features include a weather hood and screen provided for protection, and a non-metallic seat insert on the pallet to minimize leakage. Model 221P and 221PV feature a diaphragm type seating surface on the pressure side. The diaphragm is fabric reinforced for durability, and is backed by compressible, celluar non- metallic pads for added cushion and reduced leakage. All covers are heavy cast metal to provide added strength and longer life than fabricated sheet metyal covers. Check my E-Bay Store for more Surplus, Overstock and Used Items. If you have any questions you can E-Mail or call (***)-284-8711. Hours of operation are Mon-Friday 8AM to 5PM EST.My Stores Logo (Varec 221 pv 20" emergency access relief manhole cover is the responsibility of Mara Wilkerson) |
Mara-wilkerson@cedar--rapids.com (Mara Wilkerson) for more information.
