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Selecting The Right ProductWhich product do you need?To help you choose the product you need, the tables below list Elmac Technologies® product ranges and show which general functions and features they provide.
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Pressure/Vacuum Relief Valves| Nominal Bore (inches) | 2" | 3" | 4" | 6" | 8" | 10" | 12" |
|---|---|---|---|---|---|---|---|
| Pressure/Vacuum Relief Valves |
Manways
Non-sparking, low pressure access manways offer easy entry to low-pressure storage tanks for maintenance and cleaning. Emergency relief manways permit access to low pressure storage tanks and provide emergency venting in the event of fire.
Table 2. Access and Emergency Relief Manways - Size Ranges
| Nominal Bore (inches) | 10" | 12" | 18" | 20" | 24" |
|---|---|---|---|---|---|
| Access Manways | - | - | |||
| Pressure-Only Emergency Relief Manways | |||||
| Pressure and Vacuum Emergency Relief Manways |
Gauge Hatches
Gauge hatches allow easy access to atmospheric liquid storage tanks for manual level measurement (dipping), temperature measurement and sampling. Gauges can also be combined with a pressure/vacuum relief mechanism, or free vent to offer various levels of pressure relief protection.
Table 3. Gauge Hatches - Size Ranges
| Nominal Bore (inches) | 4" | 6" | 8" | 10" | 12" |
|---|---|---|---|---|---|
| Gauge Hatch | |||||
| Gauge Hatch - Lockable | |||||
| Combined Gauge Hatch & Pressure/Vacuum Relief | - | - | - | - | |
| Combined Gauge Hatch & Free Vent | - | - |
Free Vents
Free vents are designed for use on any atmospheric tank to prevent the build-up of internal pressure, by allowing atmospheres and vapours to flow freely in tanks or vent riser pipes.
Table 4. Vent - Size Ranges
| Nominal Bore (inches) | 2" | 3" | 4" | 6" | 8" | 10" | 12" |
|---|---|---|---|---|---|---|---|
| Free Vents and Filter Vents |
Tank Blanketing Valves
Tank blanketing valves offer complete protection to the storage tank product against contamination and to the storage tank itself against rupture or damage. In addition to preventing outside air and moisture from entering the storage vessel, a blanket gas pressure reduces the evaporation of the stored product to a negligable amount.
Table 5. Tank Blanketing Valves - Size Ranges
| Nominal Bore (mm) | 15 | 25 | 50 | 100 |
|---|---|---|---|---|
| Low Pressure Tank Blanketing Valves |
Still not sure which product you need?
Our Customer Services team is just a phone call away.
If you are still not sure which product you need, or have a query about specific options or requirements, or would like some more advice, please do not hesitate to get in touch with our Customer Services team. Details are shown on the left of this page.