{"product_id":"smc-ar825-12bg","title":"SMC AR825-12 Pilot Operated Regulator 1-1\/2\" — Relief Type, Large Flow Main Line","description":"\u003cp\u003e\u003cstrong\u003eSMC AR825-12\u003c\/strong\u003e — AR425-935 series pilot operated regulator with 1-1\/2\" ports, internal pilot relieving type. Sized for main line duty where a direct acting regulator cannot hold the setting against the flow.\u003c\/p\u003e\n\n\u003ch3\u003eSpecification — AR825-12\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eAR425-935 (pilot operated regulator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003e825\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePort size\u003c\/td\u003e\n\u003ctd\u003e1-1\/2\" (code 12)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eInternal pilot, relieving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct weight\u003c\/td\u003e\n\u003ctd\u003e2,500 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003ePilot operated or direct acting\u003c\/h3\u003e\n\u003cp\u003eA direct acting regulator balances the outlet pressure against a spring, and the setting sags as flow rises — acceptable on a machine branch, not on a main line where demand swings as plant cycles. A pilot operated regulator uses a small internal pilot to control a large main valve, so it holds its setting across a much wider flow range. On a 1-1\/2\" line that difference shows up as stable pressure at the far end of the plant instead of a reading that moves every time a large cylinder fires.\u003c\/p\u003e\n\n\u003ch3\u003eRelieving type\u003c\/h3\u003e\n\u003cp\u003eIf downstream pressure rises above the setting — from thermal expansion, from a cylinder being pushed back, or from someone turning the knob down — a relieving regulator vents the excess to atmosphere instead of trapping it. On a non-relieving unit the only way down is to bleed the line manually.\u003c\/p\u003e\n\n\u003ch3\u003eTypical use\u003c\/h3\u003e\n\u003cp\u003eMain line pressure control at the compressor room outlet or building entry, and ahead of large air preparation sets.\u003c\/p\u003e\n\n\u003ch3\u003eOrdering\u003c\/h3\u003e\n\u003cp\u003eOrder by the full code \u003cstrong\u003eAR825-12\u003c\/strong\u003e. Port size, gauge and bracket options are all in the code — the G suffix adds a gauge and B a bracket, so AR825-12BG carries both. This size is usually made to order rather than stocked; tell us the quantity and we will confirm lead time with the price.\u003c\/p\u003e\n\n\u003ch3\u003eSupply from Korea\u003c\/h3\u003e\n\u003cp\u003eGenuine SMC, sourced through Korean distribution and shipped from Gyeonggi-do with export packing and commercial documents prepared as standard.\u003c\/p\u003e","brand":"SMC","offers":[{"title":"Default Title","offer_id":50519469916379,"sku":"AR825-12BG","price":221.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1052\/8660\/files\/001_7a87f7b7-b267-4550-b12b-275952bc50f9.png?v=1790468445","url":"https:\/\/wowtoolz.com\/products\/smc-ar825-12bg","provider":"WowToolz","version":"1.0","type":"link"}