{"product_id":"solinst-464-electronic-pump-control-unit","title":"Solinst 464 Electronic Pump Control Unit","description":"\u003cp\u003eThe Solinst 464 Electronic Pump Control Unit is a battery-powered timer\/controller that drives Solinst's pneumatic pumps — the 407 Bladder Pump, 408\/408M Double Valve Pumps, and 425 Discrete Interval Sampler hand pump. It regulates a compressed gas supply (air, nitrogen, or an inert gas cylinder) delivered through a drive line to the pump, while an internal solenoid valve cycles between a drive phase (pressurizing the line to force water upward) and a vent phase (releasing pressure so the pump recharges with water). Cycle timing can be set from three built-in Low\/Medium\/High presets or user-defined custom drive\/vent times from 1 second to 99 hours, with up to 99 named settings stored in non-volatile memory. If the batteries are removed or depleted, a manual push-button valve on the front panel takes over, letting the unit run on compressed gas alone with no electronics required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo you have everything you need?\u003c\/strong\u003e The 464 requires a compressed gas source — such as a 12V compressor or a gas cylinder — plus the pneumatic pump it will drive (Solinst 407 Bladder Pump, 408\/408M Double Valve Pump, or 425 Discrete Interval Sampler). Replacement drive lines and supply lines are available in the \u003ca href=\"https:\/\/envirotechonline.com\/products\/solinst-464-pump-control-unit-parts-accessories\" title=\"Solinst 464 Pump Control Unit Parts \u0026amp; Accessories\" rel=\"noopener\" target=\"_blank\"\u003eSolinst 464 Pump Control Unit Parts \u0026amp; Accessories\u003c\/a\u003e collection.\u003c\/p\u003e","brand":"Solinst","offers":[{"title":"125 psi","offer_id":48181446017214,"sku":"112506","price":1308.21,"currency_code":"USD","in_stock":true},{"title":"250 psi","offer_id":48181446049982,"sku":"112508","price":2780.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/electronic-pump-control-unit-1x.jpg?v=1784667359","url":"https:\/\/envirotechonline.com\/products\/solinst-464-electronic-pump-control-unit","provider":"EnviroTech Services","version":"1.0","type":"link"}