{"product_id":"unions","title":"Unions","description":"\u003cp\u003eMalleable Iron Unions are three-part threaded fittings designed to connect two sections of pipe while allowing the system to be easily disconnected without cutting or disturbing the pipework. They are widely used in fire protection, plumbing, heating and industrial systems where maintenance access or future modification is required.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eManufactured from malleable iron and typically supplied with BSPT threaded ends, they provide a strong, leak-resistant and reusable joint solution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cp\u003e• Three-part demountable union design \u003cbr\u003e• Female BSPT threaded connections (typical configuration) \u003cbr\u003e• Allows easy disconnection and reassembly of pipework \u003cbr\u003e• Manufactured from durable malleable iron \u003cbr\u003e• Strong, pressure-resistant sealing surfaces \u003cbr\u003e• Suitable for maintenance-friendly installations \u003cbr\u003e• Available in black and galvanised finishes\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eProduct Description\u003c\/h4\u003e\n\u003cp\u003eUnions are designed to provide a secure pipe connection that can be repeatedly assembled and disassembled without damaging the pipework. Unlike standard threaded fittings, they incorporate a central union nut and mating faces that compress together to form a tight mechanical seal when tightened.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe sealing action is achieved through precisely machined mating faces—often incorporating a softer seating material such as brass within the assembly depending on specification—which compress under tightening to create a reliable, leak-resistant joint. This makes unions particularly valuable in systems that require periodic maintenance or component replacement.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eManufactured from malleable iron, these fittings offer excellent mechanical strength combined with resistance to shock and vibration. This ensures durability in demanding environments while maintaining the ability to be repeatedly dismantled and reassembled without degradation of performance.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eTypically featuring BSPT (British Standard Pipe Taper) female threaded ends, unions are installed into standard threaded pipe systems using conventional sealing compounds or PTFE tape on the threaded joints. The union itself then provides the serviceable break point in the system.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eThese fittings are widely used in fire sprinkler systems, boiler installations, HVAC systems, compressed air networks and general industrial pipework. Their ability to isolate sections of pipework without cutting makes them essential for equipment connections, pump sets, valves and maintenance access points.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eAvailable in Black (self-colour) for internal or painted systems and Hot Dip Galvanised (HDG) for enhanced corrosion resistance in external or more aggressive environments, they offer flexibility across a wide range of applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eApplications\u003c\/h4\u003e\n\u003cp\u003eIdeal for fire sprinkler systems, plumbing, heating, boiler connections, HVAC installations, compressed air systems and industrial pipework where removable and serviceable threaded connections are required.\u003c\/p\u003e","brand":"Jinan Meide","offers":[{"title":"15mm \/ Black","offer_id":54024505655629,"sku":"FITUB015","price":3.47,"currency_code":"GBP","in_stock":true},{"title":"20mm \/ Black","offer_id":54024505688397,"sku":"FITUB020","price":5.57,"currency_code":"GBP","in_stock":true},{"title":"25mm \/ Black","offer_id":54024505721165,"sku":"FITUB025","price":6.17,"currency_code":"GBP","in_stock":true},{"title":"32mm \/ Black","offer_id":54024505753933,"sku":"FITUB032","price":7.0,"currency_code":"GBP","in_stock":true},{"title":"40mm \/ Black","offer_id":54024505786701,"sku":"FITUB040","price":7.76,"currency_code":"GBP","in_stock":true},{"title":"50mm \/ Black","offer_id":54024505819469,"sku":"FITUB050","price":15.58,"currency_code":"GBP","in_stock":true},{"title":"65mm \/ Black","offer_id":54024505852237,"sku":"FITUB065","price":20.58,"currency_code":"GBP","in_stock":true},{"title":"80mm \/ Black","offer_id":54024505885005,"sku":"FITUB080","price":29.73,"currency_code":"GBP","in_stock":true},{"title":"100mm \/ Black","offer_id":54024505917773,"sku":"FITUB100","price":56.18,"currency_code":"GBP","in_stock":true},{"title":"8mm \/ Galvanised","offer_id":54024505950541,"sku":"FITUG008","price":8.68,"currency_code":"GBP","in_stock":true},{"title":"10mm \/ Galvanised","offer_id":54024505983309,"sku":"FITUG010","price":6.7,"currency_code":"GBP","in_stock":true},{"title":"15mm \/ Galvanised","offer_id":54024506016077,"sku":"FITUG015","price":3.19,"currency_code":"GBP","in_stock":true},{"title":"20mm \/ Galvanised","offer_id":54024506048845,"sku":"FITUG020","price":3.96,"currency_code":"GBP","in_stock":true},{"title":"25mm \/ Galvanised","offer_id":54024506081613,"sku":"FITUG025","price":4.62,"currency_code":"GBP","in_stock":true},{"title":"32mm \/ Galvanised","offer_id":54024506114381,"sku":"FITUG032","price":7.21,"currency_code":"GBP","in_stock":true},{"title":"40mm \/ Galvanised","offer_id":54024506147149,"sku":"FITUG040","price":9.28,"currency_code":"GBP","in_stock":true},{"title":"50mm \/ Galvanised","offer_id":54024506179917,"sku":"FITUG050","price":12.81,"currency_code":"GBP","in_stock":true},{"title":"65mm \/ Galvanised","offer_id":54024506212685,"sku":"FITUG065","price":27.83,"currency_code":"GBP","in_stock":true},{"title":"80mm \/ Galvanised","offer_id":54024506245453,"sku":"FITUG080","price":29.43,"currency_code":"GBP","in_stock":true},{"title":"100mm \/ Galvanised","offer_id":54024506278221,"sku":"FITUG100","price":101.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/9925\/1021\/files\/unions_FITUB025.png?v=1780480252","url":"https:\/\/fire-mechfixings.co.uk\/products\/unions","provider":"Fire Mech Fixings","version":"1.0","type":"link"}