Detailed Product Description

Series 8300

The Series 8300 range of Pressure & Vacuum Breather valves minimize vapour losses from storage tanks during operations, whilst preventing internal pressure and vacuum conditions from exceeding the tank design limits.  Hence, both product and vessel are protected, as well as the tank environmental conditions.

Installation

The Pressure & Vacuum Breather valve should be mounted on tank roof nozzles as close as possible to the tank roof, to ensure that pressure under the pallet is maintained within 3% of the tank pressure.

Flange Adaptors

A range of steel adaptor flanges is available for non-standard drilling on tank nozzle flange and for use where tank flanges differ dimensionally for valve flanges.

Features

Combined Units

Series 8300 Pressure & Vacuum Breather Valve can be fitted in combination with Series 8300 Flame Arrestors.  This type of installation reduces valve flow capacities and thus special sizing calculations are applicable.

Specifications:

Size                            : 50mm (2"), 80mm (3"), 100mm (4"), 150mm (6"), 200mm (8"), 250mm (10") and 300mm (12")

Pressure Settings

Minimum                     : 38 mm (2" valve size)

                                    25 mm (3" to 10" valve size)

                                    19 mm (12" valve size)

Maximum                    : 1056 mm (2" to 4" valve sizes)

                                     704 mm (6" to 12" valve sizes)

Vacuum Settings

Minimum                      : 25 mm (All valve sizes)

Maximum                     : 65 mm (All valve sizes).

End Connections           : ASA 150FF

Outlet (for closed vent)   : 4" (for 3" Valve)

                                      8" (for 6" Valve)

                                      12" (for 10" Valve)