{"product_id":"conti-coffee-machine-vent-valve-o-1-4m","title":"Conti Espresso Machine Vent Valve 1\/4\" – Boiler Anti-Vacuum Valve Replacement","description":"\u003ch2\u003eWhat Is a Boiler Vent Valve?\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eboiler vent valve\u003c\/strong\u003e (also called an anti-vacuum valve or anti-siphon valve) is a small but critical safety and functional component on your Conti commercial espresso machine. With a \u003cstrong\u003e1\/4\" male (BSP) connection\u003c\/strong\u003e, it allows air to enter the boiler during cool-down, preventing a vacuum from forming that could collapse the boiler or cause water to siphon back into the mains supply. It also vents steam during initial heat-up.\u003c\/p\u003e\u003ch2\u003eCompatible Conti Machines\u003c\/h2\u003e\u003cp\u003eThis valve is designed for \u003cstrong\u003eConti commercial espresso machines\u003c\/strong\u003e using a 1\/4\" BSP vent valve connection. Contact us with your machine model or serial number to confirm fitment before ordering.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Vent valve \/ anti-vacuum valve \/ anti-siphon valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e 1\/4\" male (BSP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Conti\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 200g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSymptoms of a Faulty Vent Valve\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eContinuous dripping or steam venting from the valve during normal operation\u003c\/li\u003e\n\u003cli\u003eMachine taking longer than usual to reach operating temperature\u003c\/li\u003e\n\u003cli\u003eGurgling sounds from the boiler during heat-up or cool-down\u003c\/li\u003e\n\u003cli\u003eWater siphoning back through the inlet line when the machine is switched off\u003c\/li\u003e\n\u003cli\u003eValve stuck open or closed — visible mineral scale or corrosion on the valve body\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow to Replace a Boiler Vent Valve\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eIsolate the machine from power and water supply; allow it to cool and fully depressurise\u003c\/li\u003e\n\u003cli\u003eLocate the vent valve on the boiler — typically on the top or side of the boiler body\u003c\/li\u003e\n\u003cli\u003eUnscrew the old valve using the 1\/4\" BSP thread; apply thread tape to the new valve\u003c\/li\u003e\n\u003cli\u003eThread in the replacement valve and tighten firmly — do not overtighten\u003c\/li\u003e\n\u003cli\u003eRestore power and water; heat the machine and check for leaks and correct venting behaviour\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cem\u003eTip: Vent valves are prone to scale buildup in hard water areas. Descaling regularly can extend valve life significantly.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eWhy Buy From Bear Coffee Machine?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine Conti-compatible vent and anti-vacuum valves\u003c\/li\u003e\n\u003cli\u003eFast shipping from Sydney, Australia\u003c\/li\u003e\n\u003cli\u003eExpert support — we can confirm the correct valve for your machine\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Conti","offers":[{"title":"Default Title","offer_id":46325770453188,"sku":null,"price":25.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/6632\/8260\/files\/2026-07-01194653.jpg?v=1782899513","url":"https:\/\/bearcoffeemachine.com.au\/products\/conti-coffee-machine-vent-valve-o-1-4m","provider":"Bear Coffee Machine ","version":"1.0","type":"link"}