{"id":16130,"date":"2026-03-26T14:28:59","date_gmt":"2026-03-26T13:28:59","guid":{"rendered":"https:\/\/lda.be\/?post_type=product&#038;p=16130"},"modified":"2026-03-26T14:41:24","modified_gmt":"2026-03-26T13:41:24","slug":"series-3581-liquid-diaphragm-process-valve","status":"publish","type":"product","link":"https:\/\/lda.be\/en\/product\/series-3581-liquid-diaphragm-process-valve\/","title":{"rendered":"Series 3581 liquid diaphragm process valve"},"content":{"rendered":"<p>The Spartan Scientific Series 3581 diaphragm process valve is a 2-way, 2-position solenoid\/air-operated valve designed to control liquids, water, and inert gases. It includes a large 12.7 mm orifice and comes in 1\/4&#8243;, 3\/8&#8243;, and 1\/2&#8243; NPT port sizes.<\/p>\n<p>A brass body delivers durability and supports a high pressure differential. The energy-saving solenoid pilot uses low wattage and features stainless steel internal components. Standard seal options include EPDM, FKM, and NBR.<\/p>\n<p>The coils are fully encapsulated and available in all standard voltages, with spade terminals, flying leads, or a connector. Common uses include inert fluid and gas control, condensate drain systems, hot water plumbing, and sprinkler systems.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Spartan Scientific Series 3581 diaphragm process valve is a 2-way, 2-position solenoid\/air-operated valve designed to control liquids, water, and inert gases. It includes a large 12.7 mm orifice and comes in 1\/4&#8243;, 3\/8&#8243;, and 1\/2&#8243; NPT port sizes. A brass body delivers durability and supports a high pressure differential. The energy-saving solenoid pilot uses [&hellip;]<\/p>\n","protected":false},"featured_media":16125,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[1911],"product_cat":[1559],"product_tag":[],"class_list":{"0":"post-16130","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-spartan","7":"product_cat-liquid-valves","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Series 3581 liquid diaphragm process valve - LDA Belgium<\/title>\n<meta name=\"description\" content=\"Spartan 3581 diaphragm process valve: 2-way solenoid\/air operated valve for liquids and gases. 1\/4&quot;\u20131\/2&quot; NPT, 0.5\u201312.4 bar, 20\u201380 ms response time, IP65.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lda.be\/en\/product\/series-3581-liquid-diaphragm-process-valve\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Series 3581 liquid diaphragm process valve - 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