{"id":31,"date":"2013-05-15T16:47:11","date_gmt":"2013-05-15T16:47:11","guid":{"rendered":"http:\/\/www.afpgusa.com\/blog\/?p=31"},"modified":"2013-05-15T16:47:11","modified_gmt":"2013-05-15T16:47:11","slug":"hydraulic-pump-what-is-this-thing","status":"publish","type":"post","link":"https:\/\/www.afpgusa.com\/blog\/hydraulic-pump-what-is-this-thing\/","title":{"rendered":"Hydraulic Pump&#8230;.What Is This Thing?"},"content":{"rendered":"<p><a href=\"https:\/\/localhost\/apigroup\/afpgusa\/blog\/wp-content\/uploads\/2013\/05\/Monroe-Hydraulic-Pump-image-from-Aerojet-cropped-for-website-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-34 alignright\" title=\"Hydraulic Pump installed by AFPG's Fire Pro divisional office in Monroe, LA\" src=\"\/\/www.afpgusa.com\/blog\/wp-content\/uploads\/2013\/05\/Monroe-Hydraulic-Pump-image-from-Aerojet-cropped-for-website-193x300.jpg\" alt=\"\" width=\"193\" height=\"300\" \/><\/a>I was visiting an old defense plant to prepare a price for modification of a pre-1950 fire sprinkler system. While walking through the building, the sprinkler system in the picture caught my eye. I recognized the six inch alarm valve, which has not changed that much over the years. I also identified the 2 \u00bd inch \u201cRate of Rise\u201d Automatic of America mercury check actuated deluge system located in the upper left in the picture. But my question was \u201cwhat is the device to the left of the alarm valve?<br \/>\nAfter returning to the office I did some research and found the device in an old \u201cAutomatic of America\u201d volume II book page G58a. The mysterious component turned out to be a hydraulic air pump Using a controlled flow of water from below the alarm valve, a venturi and other devices, water and air develops 24 ounces of air in the tank to the right of the deluge valve. In the process, the air is separated from the water. A control device opens the water flow at 16 ounces and stops the flow at 24 ounces of pressure.<br \/>\nThe 24 ounce air supply is instrumental in operating the mercury check and \u201crate of rise\u201d heat detectors to activate the deluge valve. The \u201cHydraulic Air Pump\u201d was installed in explosive environments to eliminate the possibility of sparks generated by electric pumps. I never cease to be amazed at early technology that was utilized in fire protection systems from the past.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I was visiting an old defense plant to prepare a price for modification of a pre-1950 fire sprinkler system. While walking through the building, the sprinkler system in the picture caught my eye. I recognized the six inch alarm valve,&hellip; <a href=\"https:\/\/www.afpgusa.com\/blog\/hydraulic-pump-what-is-this-thing\/\" class=\"more-link\">Continue Reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-31","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hydraulic Pump....What Is This Thing? - AFPG Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.afpgusa.com\/blog\/hydraulic-pump-what-is-this-thing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hydraulic Pump....What Is This Thing? - AFPG Blog\" \/>\n<meta property=\"og:description\" content=\"I was visiting an old defense plant to prepare a price for modification of a pre-1950 fire sprinkler system. 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I recognized the six inch alarm valve,&hellip; Continue Reading &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.afpgusa.com\/blog\/hydraulic-pump-what-is-this-thing\/\" \/>\n<meta property=\"og:site_name\" content=\"AFPG Blog\" \/>\n<meta property=\"article:published_time\" content=\"2013-05-15T16:47:11+00:00\" \/>\n<meta name=\"author\" content=\"Kris Kerber\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kris Kerber\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/\"},\"author\":{\"name\":\"Kris Kerber\",\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/#\\\/schema\\\/person\\\/3062fbb867e37d07ba101c2b4ff14936\"},\"headline\":\"Hydraulic Pump&#8230;.What Is This Thing?\",\"datePublished\":\"2013-05-15T16:47:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/\"},\"wordCount\":250,\"commentCount\":0,\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/\",\"url\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/\",\"name\":\"Hydraulic Pump....What Is This Thing? - AFPG Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/#website\"},\"datePublished\":\"2013-05-15T16:47:11+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/#\\\/schema\\\/person\\\/3062fbb867e37d07ba101c2b4ff14936\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/hydraulic-pump-what-is-this-thing\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hydraulic Pump&#8230;.What Is This Thing?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/\",\"name\":\"AFPG Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/#\\\/schema\\\/person\\\/3062fbb867e37d07ba101c2b4ff14936\",\"name\":\"Kris Kerber\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4c5a868aa0c0c1a484f91749d28875b744ad3f5c292515107e74249194ff0b7e?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4c5a868aa0c0c1a484f91749d28875b744ad3f5c292515107e74249194ff0b7e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/4c5a868aa0c0c1a484f91749d28875b744ad3f5c292515107e74249194ff0b7e?s=96&d=mm&r=g\",\"caption\":\"Kris Kerber\"},\"url\":\"https:\\\/\\\/www.afpgusa.com\\\/blog\\\/author\\\/kris-kerber\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hydraulic Pump....What Is This Thing? - AFPG Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.afpgusa.com\/blog\/hydraulic-pump-what-is-this-thing\/","og_locale":"en_US","og_type":"article","og_title":"Hydraulic Pump....What Is This Thing? - AFPG Blog","og_description":"I was visiting an old defense plant to prepare a price for modification of a pre-1950 fire sprinkler system. 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