{"product_id":"potter-ps25-2-low-high-supervisory-pressure-switch","title":"Potter PS25-2 Low\/High Supervisory Pressure Switch","description":"\u003cp\u003ePotter PS25-2 Low\/High Supervisory Pressure Switch for Low Differential Dry and Pre action Valves - Nominal System Pressure 25 psi The Potter PS25 Series Supervisory Pressure Actuated Switches are designed primarily to detect an increase and\/or decrease from normal system pressure in automatic fire sprinkler systems. Typical applications are: air\/nitrogen supervision in dry pipe and pre-action systems, pressure tanks, air supplies, and water supplies. The PS25-2 has two switches. The Low switch is factory set to activate at approximately 18 psi (1,2 BAR) on a decrease in pressure.\u003c\/p\u003e\n\u003cp\u003e The High switch is factory set to activate at approximately 28 psi (1,9 BAR) on an increase in pressure. NFPA 72 requires a supervisory signal for both high and low pressure conditions. The PS25 is factory set for a normal air pressure of 23 psi. See section heading Adjustments and Testing if other than factory set point is required.\u003c\/p\u003e\n\u003ch4 class=\"item-header\"\u003e\u003cstrong\u003eMain Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cul class=\"mainfeatureslist\"\u003e\n\u003cli\u003eTwo switch model\u003c\/li\u003e\n\u003cli\u003eIndependent switch adjustment, no tools needed\u003c\/li\u003e\n\u003cli\u003eTwo 1\/2\" conduit\/cable entrances\u003c\/li\u003e\n\u003cli\u003eSeparate isolated wiring chambers\u003c\/li\u003e\n\u003cli\u003eNon-corrosive pressure connection\u003c\/li\u003e\n\u003cli\u003eNon-Conductive Enclosure\u003c\/li\u003e\n\u003cli\u003eVdS version available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":43247409365057,"sku":"PL-PS252","price":163.07,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/2465\/9009\/files\/6f0a92cb-pl-ps252_lg.jpg?v=1773116476","url":"https:\/\/www.fireandsafetyplus.com\/products\/potter-ps25-2-low-high-supervisory-pressure-switch","provider":"Fire and Safety Plus","version":"1.0","type":"link"}