94063 FRP Manhole Cover

The Shand & Jurs 94063 FRP (Fiberglass Reinforced Plastic) Series Manhole Cover is designed to provide emergency venting relief of low-pressure storage tanks and vessels. These covers also provide quick, easy access for tank inspection and maintenance. When the tank is exposed to abnormal internal pressure beyond the capability of the conservation vent, the manhole protects the tank against costly rupture.

The Shand & Jurs 94063 FRP Series Manhole Cover provides an effective vapor-tight seal until pressure relief is required to protect the tank. Under emergency conditions, the cover opens fully to allow escape of vapors and prevents damage to the tank.


Flange, Seat, and Pallets of Derakane 470 Vinyl Ester Resin. 316 Stainless Steel Trim (Hastelloy optional) and Teflon® Air Cushioned Pallet Seating.

Other resins, soft goods, hardware and trim materials are available to meet exact corrosion requirements including 411 Derakane and Furan. Hastelloy hardware is also available.

Fast Inspection, Easy Maintenance
Unit’s rugged and lightweight design provides for easy, convenient handling for installation, inspection and maintenance. The pressure cover is normally restrained to allow automatic reseating. Disconnection of the retaining cord allows the pressure vent cover to be completely removed, thereby allowing access into the tank through the full diameter seat opening. Facilitates tank inspection and repair procedures.

Maintains Accurate Pressure Setting

Factory tested prior to shipment to meet Shand & Jurs high standards. Standard pressure setting of 3/4 oz/in2 on all models. Higher settings are also available.


  • 16”, 20”, 24” Sizes
  • Acids & Caustic Services
  • Fiberglass Construction
  • API 650, ANSI 150 or EN1092-1 Flange Drilling
  • Leakage Rate of < 1 SCFH at 90% of Set Point
  • 470 Derakane standard, 411 Derakane and Furan available

Related Products

94060 FRP Conservation Vent (Pressure/Vacuum)

94065 Emergency Vent And Manhole Cover Fiberglass

94069 Fiberglass Reinforced Plastic Gauge Hatch