{"product_id":"isomac-mater-pressure-switch-xp110-125-0-5-1-2-bar-1-4-bspm-1320545","title":"Isomac MATER Pressure Switch XP110 125 - 0.5-1.2 BAR - 1\/4\" BSPM - 1320545","description":"\u003ch2\u003eIsomac Mater Pressurestat — XP110, 0.5–1.2 Bar\u003c\/h2\u003e\n\n\u003cp\u003eThe pressurestat (pressure switch) controls boiler temperature on your Isomac espresso machine by cycling the heating element on and off to maintain a set pressure. When the pressurestat fails — typically with its internal contacts welded shut from years of electrical arcing — the element runs continuously, boiler pressure climbs past the safety zone, and the safety relief valve opens. This is the correct Mater replacement pressurestat for the most popular Isomac models.\u003c\/p\u003e\n\n\u003ch3\u003ePart Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mater\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e XP110 125\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure range:\u003c\/strong\u003e 0.5–1.2 Bar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e 1\/4\" BSPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart No.:\u003c\/strong\u003e 1320545\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsomac \/ Pavoni cross-ref:\u003c\/strong\u003e 451306\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Models\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIsomac:\u003c\/strong\u003e Millennium, Mondiale, Pro 3.1, Pro 6.1, Tea, Zaffiro\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElektra:\u003c\/strong\u003e Microcasa\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLa Pavoni:\u003c\/strong\u003e Botticelli Evoluzione, Cellini Classic, Cellini Evoluzione, Giotto Evoluzione, and others (post-2020 variants)\u003c\/p\u003e\n\u003cp\u003eNot sure if this is the correct pressurestat for your machine? \u003ca href=\"\/de\/pages\/contact\"\u003eContact us\u003c\/a\u003e with your model name to confirm before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eSymptoms of a Failed Pressurestat\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBoiler pressure gauge climbs past 1.2–1.5 bar and doesn't stop\u003c\/li\u003e\n  \u003cli\u003eSafety relief valve opens and vents steam during operation\u003c\/li\u003e\n  \u003cli\u003eHeating element runs continuously without cycling off\u003c\/li\u003e\n  \u003cli\u003eMachine overheats\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways unplug and fully cool the machine before replacing the pressurestat\u003c\/li\u003e\n  \u003cli\u003eRelease all boiler pressure before removing the old pressurestat\u003c\/li\u003e\n  \u003cli\u003ePhotograph wiring before disconnecting the spade terminals\u003c\/li\u003e\n  \u003cli\u003eApply 2–3 wraps of PTFE tape to the thread before fitting\u003c\/li\u003e\n  \u003cli\u003eThread in by hand first, then tighten firmly — do not overtighten\u003c\/li\u003e\n  \u003cli\u003eOn first heat-up after replacement, monitor the gauge to confirm the element cycles on and off at normal pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFast dispatch from Sydney. Australian stock.\u003c\/p\u003e","brand":"Isomac","offers":[{"title":"Default Title","offer_id":44994462023876,"sku":"ISO-PS-XP110","price":65.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/6632\/8260\/files\/2025-07-05211432.png?v=1751714148","url":"https:\/\/bearcoffeemachine.com.au\/de\/products\/isomac-mater-pressure-switch-xp110-125-0-5-1-2-bar-1-4-bspm-1320545","provider":"Bear Coffee Machine ","version":"1.0","type":"link"}