21
7500 Series Manual
4.2 EPV-7500 Vents
EPV-7500 vents work with the 7500 control unit and manifold to provide a functional, certifiable purge and
pressurization system for enclosures. As required by all pressurized enclosure systems, the EPV-7500 vent
functions as a pressure relief device and allows the purge gas to exit the enclosure, yet provides a seal
when the enclosure is pressurized and operating. The vent also has a spark arrestor, which is required for
hazardous areas.
EPV-7500-...-01/02/03 EPV-7500-PY-04
EPV-7500 Components
EPV-7500 vent with spark arrestor
Sealing washer and nut for internal or external mounting
Hex key for removing, attaching, and rotating the vent cap
4.2.1 Technical Data—EPV-7500 Vents
General specifications
Equipment architecture max. enclosure size 450 ft
3
(12.7 m
3
)
Series 7500
Hazardous environment gas or dust
Pneumatic parameters
Protective gas supply compressed air or inert gas, 5 µm lter, free from oil
Maximum pressure depends on the integrity of the enclosure (strength)
Purge ow rate See tables
Flow rate for leakage compensation EPV-7500....-01:
approx. 25 scfh (707 l/hr) at 0.25 in wc (0.63 mbar)
approx. 65 scfh (1838 l/hr) at 0.75 in wc (1.9 mbar)
EPV-7500....-02:
approx. 20 scfh (565 l/hr) at 0.25 in wc (0.63 mbar)
approx. 48 scfh (1357 l/hr) at 0.75 in wc (1.9 mbar)
EPV-7500....-03 and EPV-7500-PY-04:
approx. 15 scfh (424 l/hr) at 0.25 in wc (0.63 mbar)
approx. 25 scfh (707 l/hr) @ 0.75 in wc (1.9 mbar)
Breaking pressure EPV-7500....-01: 0.8 in wc (2.0 mbar)
EPV-7500-...-02: 1.4 in wc (3.5 mbar)
EPV-7500-...-03: 1.5 in wc (3.8 mbar)
EPV-7500-PY-04: 1.4 in wc (3.5 mbar)
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