Non-ASME, 20″ Shallow Dish, 6 Hold Down, 43.5 PSI MAWP, Model 8310, 6″ High Collar

  • HEAVY DUTY HINGES
  • THREADED HOLD-DOWNS
  • 4”, 6”, 10” HIGH COLLAR AVAILABLE
  • MANHOLES ARE CERTIFIED AND MARKED IN ACCORDANCE WITH 49CFR178.345-5

Tiona 20” Full Opening Manholes are fabricated for greater strength and less weight. Full 20 inch opening assures safe entrance for inspection or cleaning of tank. Extra heavy hinge pins and threaded swing bolts provide longer life and less maintenance.

PARTS LIST

Product Details

Assembly No.Weld CollarCoverWing-Nut, Swing Bolts Hinge PinsNumber Hold Downs* Working PressureWeight
8310ASW-6"AluminumSteelStnls 304643.5 PSI 3 BAR50 lb [22.7 kg]
8310ALW-6"AluminumStnls 316LStnls 304643.5 PSI 3 BAR50 lb [22.7 kg]
8310SCW-6"SteelSteelStnls 304643.5 PSI 3 BAR68 lb [30.9 kg]
8310LCW-6"Stnls 316LStnls 316LStnls 304643.5 PSI 3 BAR68 lb [30.9 kg]

Installation & Maintenance

MM-MH001: Full Opening Manhole Installation and Maintenance Manual

Engineering Bulletins

EB3-99: Installation and Care Instructions for Teflon Encapsulated Square Gaskets for Tiona-Betts Full Opening Manholes

EB-07-03: Maintenance and Use of Betts Full Opening Pressure Manhole