SC Automation Limited
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The EPV (enclosure protection vents) are self-seating, gravity controlled, low pressure relief valve designed to ventilate excessive enclosure pressures created by the Rapid Exchange® process, or the failure of the enclosure pressure control devices.
Each vent features a seamless cap, a spark arresting (SA) style exhaust element, a friction-free valve assembly, a base, and a mounting hub. The mounting hub, along with associated pipe fittings, permits direct mounting through a round cutout on the top or side of a protected enclosure.
| General specifications | |
| Series | EPV |
| System | Type Z Purge |
| Hazardous environment | gas or dust |
| Pneumatic parameters | |
| Protective gas supply | instrument grade air or inert gas |
| Pressure requirement | 2" ...5" wc (50.8 mm ... 127 mm wc) |
| Maximum pressure | 5" ... 7" wc (127 mm ... 177 mm wc) |
| Breaking pressure | 0.65" wc (16.5 mm wc) |
| Ambient conditions | |
| Ambient temperature | -29 ... 49 °C (-20.2 ... 120.2 °F) |
| Relative humidity | 5 ... 95 %, noncondensing |
| Mechanical specifications | |
| Materia | Body: cap - 3003 drawn aluminum base - A.S.E. 306, 308 cast aluminum mounting hub - zinc plated steel pipe fittings - schedule 40 3003 aluminum Exhaust elements: spark arrestor - 316 SS element cap - 6061 aluminum Valve assembly: base - 14 Ga. machined 316 ss seat disc - 14 Ga. machined 316 SS hinge - Zytel® 8018, 14% glass fill pin &rivets - 316 SS disc adhesive - urethane epoxy |
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