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OPW 23 Series Open <br />Atmospheric Vent <br />Open Atmospheric Vents are installed on <br />the top of vent pipes from underground <br />or above ground fuel storage tanks. <br />The vent cap and internal wire screen <br />are designed to protect the tank vent <br />lines against intrusion and blockage from <br />water, debris or insects. These vents are <br />always open to atmosphere and allow <br />any pressure or vacuum in the tank to <br />vent. The OPW 23 Series is a perfect <br />choice for many applications. <br />3-7/8" <br />99mm <br />116 O P W=== <br />Materials <br />Body: Aluminum <br />Screen: 40 -mesh brass <br />Set Screws: Brass <br />Features <br />Reliable Service — vent cap drain <br />spouts extend outward to deter <br />rainwater entry. <br />• Corrosion -Resistant <br />Construction — aluminum body and <br />cap assure a long service life. <br />4� Easy Installation — the 23 is <br />available in 2" and 3" slip-on models <br />that provide for attachment to the <br />vent line with set screws. <br />Ordering Specifications <br />Product # Description in. mm lbs. k <br />23 <br />♦ Complies with NFPA 30 <br />Requirements — for venting <br />gasoline vapors upward. <br />® High Maximum Flow Rate — <br />7000 SCFH at 2 psi (0.1 bar) <br />pressure drop. <br />® 40 -Mesh Brass Wire Screen — <br />helps prevent debris and insects from <br />entering the tank vent lines. <br />Replacement Parts <br />g Part # Description <br />23-0044 <br />Open Vent <br />1'/2 <br />38 <br />.25 .11 <br />H00122M <br />Screw <br />23-0033 <br />Open Vent <br />2 <br />51 <br />.25 .11 <br />H01967M <br />Nut <br />23.0055 <br />Open Vent <br />3 <br />76 <br />1.6 .73 <br />H01969M <br />Screen <br />