2½” BSP Super Maxi Emergency Relief Valve — 2½” BSP
male connection with 65mm nominal bore. Suitable for a
pressure range of between 2 — 75 PSI (0.14 — 5.17 Bar) and
a vacuum range of between 0 — 26” Hg (0 — 0.88 Bar).
Contact parts manufactured in 316 stainless steel. Fitted
with Fortyt seals as standard. Complete with
rubber/PTFE tank seal.
Options — pressure only version. Flanged connections
available. Range of high pressure extended body valves.
Manual vent button option. A range of alternative seal
materials is available


Weight 2.97 Kg
Design Temperature Range -55°C to 200°C *Note
(-67°F to 392°F)
*Note : Varies according to seal material
Design approval by Lloyds Register of Shipping.
Test certificates supplied as standard. Please see
separate data sheets for details on flow rates.
Tests may be witnessed and valves individually
stamped by an independent inspectorate by