{"product_id":"potter-electric-signal-osysu-1-osy-valve-supervisory-switch","title":"Potter Electric Signal osysu-1 Osy Valve Supervisory Switch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe POTTER ELECTRIC SIGNAL osysu-1 is an outside screw and yoke valve supervisory switch designed to monitor the open position of OSY-type gate valves in fire protection systems. Part of the OSYSU series, the osysu-1 includes one set of SPDT (Form C) contacts, providing a supervisory signal when the valve moves from its fully open position. This device is installed by licensed fire protection contractors and alarm technicians as part of a compliant supervisory circuit in wet, dry, or pre-action sprinkler systems.\u003c\/p\u003e\u003cp\u003eThe osysu-1 is suited for commercial and industrial fire suppression installations where OSY gate valve position monitoring is required by NFPA 13 or local authority having jurisdiction. It mounts to most OSY valves sized from 2 inches to 12 inches (50mm to 300mm) in diameter. Some valves as small as 12.5mm may also be compatible. The tamper-resistant cover is secured with two screws that require a special removal tool, which is included with each unit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMonitors open position of OSY-type gate valves for supervisory circuit compliance\u003c\/li\u003e\n\u003cli\u003eSingle SPDT (Form C) contact set for supervisory alarm panel integration\u003c\/li\u003e\n\u003cli\u003eFits most OSY valves from 2 inches to 12 inches in diameter\u003c\/li\u003e\n\u003cli\u003eTamper-resistant cover with included special removal tool\u003c\/li\u003e\n\u003cli\u003ePart of the OSYSU series, with two-contact model also available (OSYSU-2)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned to mount on most OSY outside screw and yoke gate valves ranging in size from 2 inches to 12 inches (50mm to 300mm), and on some valves as small as 12.5mm. Confirm valve stem and body geometry before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified fire protection contractor or licensed alarm technician in accordance with NFPA 72, NFPA 13, and local code requirements. Disconnect supervisory power and notify the monitoring station before servicing or replacing the switch. The tamper-resistant cover screws require the special tool supplied with the device — do not substitute standard fastener tools. Verify the valve is in the fully open position and the supervisory circuit registers normal before returning the system to service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Configuration\u003c\/strong\u003e: Single SPDT (Form C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Compatibility Range\u003c\/strong\u003e: 2 inches to 12 inches (50mm to 300mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTamper Resistance\u003c\/strong\u003e: Special tool required for cover removal (tool included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: POTTER ELECTRIC SIGNAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: osysu-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"POTTER ELECTRIC SIGNAL","offers":[{"title":"Default Title","offer_id":51268831412530,"sku":"OSYSU-1","price":143.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/308912024.jpg?v=1780706955","url":"https:\/\/voomisupply.com\/products\/potter-electric-signal-osysu-1-osy-valve-supervisory-switch","provider":"Voomi Supply","version":"1.0","type":"link"}