NIL|202F-0600
OPW VENT Emergency DN200 (8") Flange 202F-0600
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Email sales@goind.com.au or call 07 3204 2240 for live availability.
Ships from Brisbane warehouse. Standard delivery 2-5 business days Australia-wide.
DN200 EMERGENCY RELIEF FOR ATMOSPHERIC TANK PROTECTION
DN200 flange emergency vent for atmospheric storage tanks. Pressure/vacuum relief at ±5 mbar to prevent collapse or rupture during product transfer.
What it does
During fast fills, liquid rushing into a tank compresses air and raises internal pressure. During pump-outs, liquid leaving creates a vacuum. If the tank cannot breathe, it can rupture under pressure or collapse under vacuum. This flange-mounted vent opens automatically at positive or negative pressure thresholds, then closes when conditions return to normal. No wiring, no operator intervention.
Where it fits
Bolts to DN200 flange openings on atmospheric fuel and chemical tanks. Common in bulk diesel depots, mine site fuel farms, chemical storage compounds, and agricultural tank installations. If your tank has a large flange opening at the top and you are moving product quickly, this is the safety device that prevents structural damage.
Features & Benefits
Key Features
- DN200 flange connection
- Pressure and vacuum relief
- Prevents tank collapse or rupture
- Atmospheric tank service
- Bolted flange mount
- Ductile iron construction typical
Benefits
- Protects tanks during fast fills and pump-outs
- Bolts straight to existing DN200 flange openings
- No electrical or control wiring required
- Field-proven design at a value price
| Dimensions | DN200 (8 inch) flange connection |
| Mounting | bolted flange, requires gasket and hardware |
| Material | ductile iron body typical for industrial tank vent service |
| Function | prevents tank collapse under vacuum, rupture under pressure |
| Application | atmospheric fuel tanks, chemical tanks, water tanks |
| Value Tier | basic emergency relief function at a competitive price point |
Shipping & Dimensions
Ships from Brisbane warehouse. Standard delivery 2-5 business days.
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Compatible Products
Frequently Asked Questions
Can't find your answer?
Contact UsWhat is the OPW emergency vent?
A DN200 flange-mounted pressure/vacuum relief valve that opens when atmospheric storage tanks experience over-pressure or vacuum during product transfer, preventing structural damage.
What tanks does this suit?
Atmospheric fuel tanks, chemical storage vessels, and bulk liquid tanks with DN200 flange openings. Commonly specified for diesel, petrol, oil, and water storage.
Does it require power or controls?
No. It is a passive mechanical vent that opens when pressure or vacuum exceeds the set point, then closes automatically when conditions normalise.
What is included in the kit?
Emergency vent body with integral valve mechanism. Flange gasket and bolts are typically supplied by the installer to match site specifications.
What warranty and support do you offer?
12-month manufacturer warranty on defects. Valve internals are service items. For technical questions or bulk orders, contact sales@goind.com.au or 07 3204 2240.