![Armstrong International D41790 Air Vent](http://www.gsistore.com/cdn/shop/products/1_1b8bb89a-4113-4a11-8dc9-572adf64dff8_large.png?v=1518211616)
Armstrong International D41790 Air Vent
Armstrong International D41790 1/2" Female NPT x 3/4" Male NPT AV-13 Brass Air Vent rated to 150 PSI
D41790 is identical to AV-13
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