{"product_id":"allen-bradley-836-c9-style-c-external-bellows-industrial-pressure-switch","title":"Allen Bradley 836-C9 Style C External Bellows Industrial Pressure Switch","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 836-C9\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperates as a heavy-duty industrial pressure switch designed for precise control in pneumatic and hydraulic systems. This Style C device utilizes an external copper alloy bellows to actuate electrical contacts when system pressure reaches pre-defined setpoints. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e, ensuring factory-calibrated accuracy for critical safety interlocks and process automation.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 836-C9 combines a broad operating range with high surge tolerance to accommodate volatile industrial environments.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e836-C9\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePressure Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e35 to 375 PSI\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Line Pressure\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e900 PSI\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePort Size\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/4 inch FNPT (Female National Pipe Thread)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStyle C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSensing Element\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eExternal Copper Alloy Bellows\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.65 lbs (0.75 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Media Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe external copper alloy bellows resists corrosion and fatigue when exposed to non-corrosive liquids and gases. This material choice ensures a long service life even in systems prone to frequent pressure fluctuations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Surge Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile the switch operates within the 35–375 PSI range, the internal architecture withstands line pressures up to 900 PSI. This safety margin prevents mechanical failure and recalibration requirements following system pressure spikes or \"water hammer\" events.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecise Mechanical Switching:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe Style C design provides high repeatability for critical setpoints. The mechanical snap-action contacts eliminate the \"hunting\" behavior often found in low-quality electronic sensors, providing a definitive electrical signal to your PLC or motor starter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandardized Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1\/4 inch FNPT port allows for direct mounting or connection via standard industrial fittings. This universal threading simplifies the replacement of older units and allows for easy integration into existing manifold blocks without custom adapters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 836-C9 handle corrosive chemical applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 836-C9 utilizes copper alloy for its bellows. You must verify that your process media does not react with copper. For ammonia or highly acidic environments, consult the 1756 or 836 series stainless steel variants to prevent bellows rupture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the pressure setpoint adjustable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 836-C9 allows for manual adjustment of the trip point within the 35 to 375 PSI range. Use the internal adjustment screws to calibrate the switch to your specific process requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mounting orientation provides the best performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile the 836-C9 functions in multiple orientations, mounting the unit vertically with the pressure port facing downward prevents sediment and moisture from accumulating in the bellows, thereby extending the maintenance interval.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this switch require a separate power supply for sensing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 836-C9 is an electro-mechanical device. The pressure of the process fluid physically moves the bellows to trip the electrical contacts. It operates without external power, making it an ideal choice for fail-safe hardwired interlocks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52788311097653,"sku":"836-C9","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/836-C9.png?v=1777269013","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-836-c9-style-c-external-bellows-industrial-pressure-switch","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}