{"product_id":"flow-switch-q12dsmsc","title":"Flow Switch, Harwil, 1\/2\" MPT, 16-23 GPM, .5 Amp, 1-1\/2\" or 2\" Plumbing : Q12DSMSC","description":"\u003csection style=\"width:100%; max-width:960px; margin:0 auto; padding:20px; font-family:Arial, sans-serif; color:#333;\"\u003e \u003ch2 style=\"text-align:center; color:#0064ac; margin-bottom:16px; font-weight:700; font-size:1.8rem;\"\u003eProduct Details\u003c\/h2\u003e \u003cp style=\"font-size:1rem; line-height:1.5; margin-bottom:24px;\"\u003e    The Harwil Q-12 Flow Switch is a versatile and reliable fluid flow verification device widely used in pool, spa, and fluid control systems since the mid-1980s. It offers adjustable settings to suit various applications, ensuring safe and efficient operation by confirming adequate flow before system activation.  \u003c\/p\u003e \u003cdiv style=\"border:2px solid #0064ac; border-radius:6px; padding:20px; background:#f5faff; margin-bottom:24px;\"\u003e \u003ch3 style=\"color:#0064ac; font-weight:700; font-size:1.4rem; margin:0 0 12px;\"\u003eFlow Switch, Harwil, 1\/2\" MPT, 16-23 GPM, 0.5 Amp, 1-1\/2\" or 2\" Plumbing : Q12DSMSC\u003c\/h3\u003e \u003c\/div\u003e \u003cul style=\"list-style-type: disc; padding-left:20px; font-size:1rem; line-height:1.6; margin-bottom:24px;\"\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Harwil\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Q-12 (Q12DSMSC)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlumbing Size:\u003c\/strong\u003e 1\/2\" Male Pipe Thread (MPT); fits 1-1\/2\" or 2\" plumbing\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlow Range:\u003c\/strong\u003e 0.7 to 590 GPM (typical operating range)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTypical Operating Flow:\u003c\/strong\u003e 16 to 23 GPM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum Flow:\u003c\/strong\u003e Up to five times normal flow\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e 0.5 Amp switching capacity\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Switching Range:\u003c\/strong\u003e 5 VDC to 240 VAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePressure Drop:\u003c\/strong\u003e Very low, typically less than 1.0 psig at normal flow\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Used to verify fluid flow in swimming pool salt chlorine generators, spas, hot tubs, chillers, and water disinfection systems\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Can power small ice cube relay coils and some 30A power relays\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePipe Size Compatibility:\u003c\/strong\u003e Suitable for ¾ inch to 6 inch pipes\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAlternate Part Numbers:\u003c\/strong\u003e 5-20-0025, Q-12DS50\/1.5\/6M\/NO\/1 (Harwil), 34-0217 (HydroQuip), 5-20-0009\u003c\/li\u003e \u003c\/ul\u003e \u003cp style=\"font-size:1rem; line-height:1.5; color:#555;\"\u003e    The Harwil Q-12 flow switch is a trusted component in fluid control systems, providing critical flow verification to protect equipment and ensure safe operation across a variety of industrial and residential applications.  \u003c\/p\u003e\u003c\/section\u003e","brand":"PartsForSpas.com","offers":[{"title":"Default Title","offer_id":47264208584873,"sku":"Q12DSMSC","price":83.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/7584\/4521\/files\/26834.jpg?v=1784059643","url":"https:\/\/partsforspas.com\/products\/flow-switch-q12dsmsc","provider":"PartsForSpas.com","version":"1.0","type":"link"}