{"product_id":"bonaire-sit-840-sigma-gas-valve-st0840017","title":"Bonaire SIT 840 Sigma Gas Valve","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Bonaire SIT 840 Sigma Gas Valve (ST0840017) is a crucial replacement part for keeping Bonaire heating systems running safely and efficiently. If you've been troubleshooting a heater lockout or an erratic flame, a faulty gas valve is often the culprit. Getting the right genuine or compatible replacement like this one saves you a return trip to the job site and keeps your customer's heating running smoothly, especially during a cold snap.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIt's engineered to precise specifications, ensuring a reliable fit and long service life in demanding Australian conditions, from residential installations to light commercial applications.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eBest For\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eHVAC technicians servicing Bonaire ducted gas heating systems.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eAuthorised Bonaire service agents.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eGas fitters replacing faulty heating appliance valves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eDirect replacement for Bonaire Heating Systems with Part Number 5310701SP.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eCorresponds to SIT Part Number 0840017 (Sigma 840 series).\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eOperates on 230V 50Hz electrical supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIf you're running a different model, check fittings and specs before ordering.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eSIT Sigma 840 Design:\u003c\/strong\u003e A robust and proven gas valve series for reliable flame control.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eStandard Power:\u003c\/strong\u003e Designed to operate efficiently on a 230V 50Hz power supply, common in Australian installations.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eOEM Part Match:\u003c\/strong\u003e Identical to Bonaire PN 5310701SP, ensuring perfect fit and function as a genuine replacement.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e Matches SIT PN 0840017 for easy identification and sourcing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e1x Bonaire SIT 840 Sigma Gas Valve (ST0840017)\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eUsing It on the Job\u003c\/h2\u003e\n\u003col style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eIsolate Power \u0026amp; Gas:\u003c\/strong\u003e Always switch off the main power to the heating unit at the switchboard and shut down the primary gas supply. Apply lockout\/tagout procedures.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eDepressurise \u0026amp; Disconnect:\u003c\/strong\u003e Verify gas lines are depressurised, then carefully disconnect the existing gas valve, noting all electrical and gas connections.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eInstall New Valve:\u003c\/strong\u003e Mount the new Bonaire SIT 840 Sigma Gas Valve, ensuring all gas connections are made with appropriate thread sealant and torqued correctly.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eReconnect Electrics:\u003c\/strong\u003e Reconnect all electrical wiring as per the manufacturer's schematic.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eLeak Test \u0026amp; Commission:\u003c\/strong\u003e Restore gas supply, check all connections thoroughly with an approved gas leak detector solution. Then, restore power, follow commissioning steps for the heating unit, and perform a full functional test.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eLimitations \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eInstallation and servicing of gas appliances must be performed by a currently licensed gas fitter in accordance with Australian standards and local regulations.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eAlways ensure power and gas supplies are isolated before commencing any work on the appliance.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eThoroughly leak-test all gas connections after installation to prevent hazards.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eOnly use this valve on compatible Bonaire heating systems with the specified part numbers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003eBefore replacing a gas valve, always double-check all pressure switch operations and control board signals. Sometimes, a lockout can be caused by something simpler, but if you've ruled those out, a worn valve can be the root cause of inconsistent heating or complete system shutdown. Get your multimeters and pressure gauges out before you pull the trigger on a new part.\u003c\/blockquote\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003ePair with gas leak detector spray, a reliable multimeter, and your preferred set of manifold gauges for a complete service toolkit on any ducted gas heater job.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this gas valve compatible with all Bonaire heating systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This specific valve (ST0840017) is a direct replacement for Bonaire PN 5310701SP and SIT PN 0840017. Always cross-reference the part number in your Bonaire unit's manual or on the existing valve to ensure correct compatibility before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the electrical requirements for this SIT 840 Sigma Gas Valve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Bonaire SIT 840 Sigma Gas Valve is designed to operate on a standard 230V 50Hz electrical supply. Confirm your heating system's power supply matches these specifications for safe and reliable operation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need a special license to install this gas valve?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, any work involving gas appliances, including the installation or replacement of gas valves, must be performed by a qualified and currently licensed gas fitter in Australia. This ensures compliance with all relevant safety standards and regulations.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Bonaire","offers":[{"title":"Default Title","offer_id":43569063034939,"sku":"ST0840017","price":296.47,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/971_ST0840017_1.png?v=1780544058","url":"https:\/\/www.hvacshop.com.au\/products\/bonaire-sit-840-sigma-gas-valve-st0840017","provider":"HVAC Supply Shop","version":"1.0","type":"link"}