PROTECTOSEAL

Thief hatches in the nature of fitted metal hatch covers for metal storage tanks; Metal pipe connectors being cowhorn arrangements for connecting flame arresters, and pressure and vacuum conservation vents to a 3-way valve; Gauge hatches in the nature of fitted metal hatch covers for metal storage tanks; Pressure and vacuum relief vents of metal for use in low pressure storage tanks for the purpose of environmental protection and vapor control; Pressure relief vents of metal for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Vacuum relief vents of metal for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Pipe-away pressure and vacuum relief vents of metal for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Pipe-away pressure relief vents of metal for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Pipe-away vacuum relief vents of metal for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Combination vents and flame arresters, consisting primarily of a metal vent, in the nature of a combined vent and flame arrester for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control, and deflagration; Emergency relief vents in the nature of vents of metal for storage tanks to relieve internal pressure caused by exposure of the tank to fire; Tank blanketing valves, in the nature of metal valves not being parts of machines, for preventing and controlling fires in flammable liquid storage tanks

Automatic control valves in the nature of internal safety valves of metal for protecting storage tank contents from exposure to fire for use on storage tanks containing flammable and combustible liquids; Automatic control valves in the nature of overflow valves for sealing of liquid overflow pipes against vapor and liquid leakage; Pressure relief rim vents in the nature of pressure relief valves for use on low pressure storage tanks for relief of tank pressure; Water drain valves, in the nature of automated release valves for draining excess water from storage tanks accumulated during normal tank breathing, not being parts of plumbing, heating, cooling installations or machines

Flame arresters in the nature of safety accessories for storage tanks and vapor piping systems in the nature of flashback arresters for impeding detonation and deflagration in storage tanks and in process pipeline equipment; End-of-line deflagration flame arresters in the nature of safety accessories for storage tanks and vapor piping systems in the nature of flashback arresters for impeding detonation and deflagration in storage tanks and in process pipeline equipment; In-line deflagration flame arresters in the nature of safety accessories for storage tanks and vapor piping systems in the nature of flashback arresters for impeding detonation and deflagration in storage tanks and in process pipeline equipment; In-line detonation flame arresters in the nature of safety accessories for storage tanks and vapor piping systems in the nature of flashback arresters for impeding detonation and deflagration in storage tanks and in process pipeline equipment; Air dryers for storage tanks, namely, industrial apparatus used for drying incoming air into storage tanks by extracting moisture from make-up air during normal venting and during liquid pump-out

Fuel tank safety caps being caps for fuel tanks for vehicles and industrial equipment

Pressure and vacuum relief vents, not of metal, for use in low pressure storage tanks for the purpose of environmental protection and vapor control; Pressure relief vents, not of metal, for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Vacuum relief vents, not of metal, for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Pipe-away pressure and vacuum relief vents, not of metal, for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Pipe-away pressure relief vents, not of metal, for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Pipe-away vacuum relief vents, not of metal, for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control; Combination vents and flame arresters, consisting primarily of a non-metal vent, in the nature of a combined vent and flame arrester for use in low pressure storage tanks and in process pipeline equipment for the purpose of environmental protection and vapor control, and deflagration; Emergency relief vents in the nature of non-metal vents for storage tanks to relieve internal pressure caused by exposure of the tank to fire