{"product_id":"reliable-model-g-r1021-k2-8-half-inch-upright-fire-sprinkler","title":"Reliable Model G R1021 K2.8 ½-Inch Upright Fire Sprinkler","description":"\u003cdiv\u003e\n\u003cp\u003eThe Reliable Model G R1021 is a standard-response, standard-coverage upright fire sprinkler designed for installation in fire suppression systems. Operating via a solder capsule thermal element, it provides reliable thermal activation to discharge water in accordance with standard life safety system requirements. This component installs directly onto piping networks to satisfy commercial fire protection engineering designs governed by NFPA 13.\u003c\/p\u003e \u003cp\u003eEngineered for durability on the job site, this upright sprinkler features a robust brass-alloy frame, load screw, and deflector, paired with a bronze-alloy cap and PTFE seal. It handles a maximum working pressure of 175 psi (12 bar) and features a nominal K-factor of 2.8 (40 metric) for precise hydraulic calculations.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eBrass-Alloy Construction:\u003c\/b\u003e Built with a durable brass frame, load screw, and deflector for long-term structural integrity.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eBronze-Alloy Cap \u0026amp; PTFE:\u003c\/b\u003e Utilizes corrosion-resistant internal components and PTFE for reliable sealing.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSolder Capsule Thermal Element:\u003c\/b\u003e Provides standard-response activation at designated temperature ratings.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eStandard K-Factor:\u003c\/b\u003e Features a nominal K-factor of 2.8 (40 metric) for accurate system hydraulic design.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePressure Rating:\u003c\/b\u003e Rated for a maximum working pressure of 175 psi (12 bar).\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eInstallation Tool Compatibility:\u003c\/b\u003e Designed for correct torque application using the Reliable Model W2 sprinkler wrench.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e \u003cth\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eManufacturer \/ Brand\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eReliable Sprinkler\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eModel \/ Series Number \/ SIN\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eModel G \/ SIN R1021\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eConnection \/ Thread Size \u0026amp; Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e½-inch NPT or ISO 7-R½\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003ePressure Rating (WWP)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e175 psi (12 bar)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eK-Factor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2.8 (40 metric)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTemperature Rating \/ Response Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eStandard response (GU03BG: 135°F Brass; GU13CG: 165°F Chrome)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaterial \/ Body Construction\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eBrass-alloy frame, load screw, and deflector; bronze-alloy cap with PTFE\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eAgency Listings \u0026amp; Approvals\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eUL Listed, FM Approved\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eApplicable NFPA Standards\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eNFPA 13\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003eVerify local AHJ requirements, confirm required thread standards, and match sprinkler identification, temperature, finish, and connection to project specifications before ordering. \u003cbr\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e \u003ca href=\"#\"\u003eRead Reliable Bulletin 110, including page 2 for Model G upright specifications\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Reliable Sprinkler","offers":[{"title":"Brass \/ 135F \/ 1\/2-inch","offer_id":48299680137464,"sku":"GU03BG","price":71.99,"currency_code":"USD","in_stock":true},{"title":"Chrome \/ 165F \/ 1\/2-inch","offer_id":48299680170232,"sku":"GU13CG","price":82.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/reliable-g-upright-k28-r1021-6106805.jpg?v=1778906725","url":"https:\/\/fireprotectionparts.net\/products\/reliable-model-g-r1021-k2-8-half-inch-upright-fire-sprinkler","provider":"Fire Protection Parts","version":"1.0","type":"link"}