NO 87, 67 and 7 Automatic Air Vents are designed to vent the accumulation of troublesome air wherever it can be trapped. These non-ferrous automatic air vents are 4-3/4 in x 2-1/4 in, 3-3/16 in x 1-1/2 in, and 4-1/6 in x 2-3/16 in(height and width), respectively, and are rated for a maximum operating temperature of 240 deg F at pressures of 150, 35, and 75 PSI, respectively. The No. 87 has a combination of 1/2 in FPT / 3/4 in MPT connection, whereas No's. 67 and 7 have 1/8 in MPT and 1/8 in FPT connections, respectively.
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Model 87
Specifications
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Nominal Size:Â 3/4 x 1/2 in
End Style:Â FNPT x MNPT
Pressure Rating:Â 150 psi
Temperature Rating:Â 240 deg F
Dimensions:Â 2-1/4 in W x 4-3/4 in H
Body Material:Â Brass
Application
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efficient removal of trapped air in heating and cooling systems.