{"product_id":"w4-stem-shut-off-valve-12mm-31272","title":"W4 Stem Shut Off Valve 12mm (31272)","description":"\u003ch2\u003eW4 Stem Shut Off Valve 12mm - Caravan \u0026amp; Motorhome Water System\u003c\/h2\u003e\u003cp\u003eIsolate any section of your caravan or motorhome 12mm water supply quickly and easily with the W4 stem shut off valve. The screw-stem design allows gradual opening and closing rather than the abrupt quarter-turn action of a ball valve — useful where you want finer flow control or need to reduce water hammer in the system.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12mm fitting — suits the standard internal plumbing size for caravans and motorhomes\u003c\/li\u003e\n\u003cli\u003eStem (screw-type) operation — gradual open\/close for fine flow control\u003c\/li\u003e\n\u003cli\u003eInline installation — fits directly into the 12mm water supply pipework\u003c\/li\u003e\n\u003cli\u003eAllows isolation of individual water circuits for maintenance or winterisation\u003c\/li\u003e\n\u003cli\u003eDurable plastic construction\u003c\/li\u003e\n\u003cli\u003eW4 brand — part number 31272\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStem Valve vs Ball Valve\u003c\/h3\u003e\u003cp\u003eStem shut-off valves use a threaded stem that compresses a seal progressively. This provides finer flow control and a gentler closing action compared to a ball valve. Ideal for installations where abrupt valve closure causes pipe knock (water hammer), or where partial flow reduction is needed.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eFit inline in the 12mm supply pipework at the desired isolation point. Ensure connections are secure and leak-free before restoring water pressure to the system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart number:\u003c\/strong\u003e 31272  |  \u003cstrong\u003eBarcode:\u003c\/strong\u003e 5019328312721\u003c\/p\u003e","brand":"W4","offers":[{"title":"Default Title","offer_id":57202546737487,"sku":"31272","price":14.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/6054\/8943\/files\/31272_fullsize.webp?v=1773016075","url":"https:\/\/bedamleisure.co.uk\/products\/w4-stem-shut-off-valve-12mm-31272","provider":"Bedam Leisure","version":"1.0","type":"link"}