Stainless Steel Air Operated Vapour Vents

Adjustment free.
Low maintenance.
90mm nominal diameter opening for minimum full 80mm flow throughout.
Piston operation for sequential operation.
Downward opening poppet to prevent leaks from product surge, in the event of a tanker rollover.
The sequencing valve is offered to ensure the main poppet is fully open before next vent opens.
The end signal can then be used to allow loading/unloading in the certainty that all vapour vent poppets are open.
Air cylinder is serviceable without removing the valve from tank.

Operating Pressure
Operating air cylinder pressure: 70 to 900 kPa (normal 500 kPa).

Vacuum opening pressure: 7 kPa vacuum.

Air Consumption
1 litre free air per stroke.

Mounting
Bolted from the outside to a blind Stainless Steel weld flange.

Flange mount: 8 hole equally spaced, 11mm on a 130mm PCD. 154mm OD.

Materials
Body: 316 Stainless Steel
Seals: FFKM or Viton^TM GFLT.

AVV3SSC: Chemical Air operated vapour vent, FFKM seals.

AVV3SSVG: Chemical Air operated vapour vent, Viton GFLT seals.

AVV3SS-10: Stainless Steel weld in mount flange to mount on tank top.