{"id":3839,"date":"2025-10-17T09:12:44","date_gmt":"2025-10-17T01:12:44","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3839"},"modified":"2026-07-14T20:59:40","modified_gmt":"2026-07-14T12:59:40","slug":"valvola-a-farfalla-pneumatica","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/it\/product\/pneumatic-butterfly-valve\/","title":{"rendered":"Valvola a farfalla pneumatica \u2014 Corpo a wafer, acciaio inossidabile 316, raccordo sanitario"},"content":{"rendered":"
PDF<\/span>Farfalla di wafer<\/span>Per uso alimentare \u00b7 Scheda tecnica delle dimensioni<\/span>Scarica \u2193<\/span><\/a><\/div>\n

Descrizione del prodotto<\/h2>\n

A wafer-body pneumatic butterfly valve<\/strong> in 316 stainless steel, sized \u00d812.7 to \u00d8101.6 mm (1\/2\u2033 to 4\u2033 tube OD). The valve body is clamped between two ferrules and the disc rotates 90\u00b0 to open or close. A pneumatic actuator sits on the top platform, bolted through four M6 or M8 holes.<\/p>\n

It is short, light and cheap compared with a ball valve of the same size \u2014 and that is exactly what it is for. Below we show you the dimensions, and we tell you plainly where this valve belongs and where you should be buying a ball valve instead.<\/p>\n

Dimensioni<\/h2>\n
\n\"Wafer
The letters in the drawing match the columns in the table below. Unit: mm.<\/figcaption><\/figure>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Dimensione<\/th>\nL<\/th>\nD<\/th>\nd<\/th>\nT<\/th>\nh<\/th>\nB<\/th>\nM<\/th>\n<\/tr>\n<\/thead>\n
\u00d812.7<\/strong> (1\/2\u2033)<\/td>\n66<\/td>\n36<\/td>\n6<\/td>\n9\u00d79<\/td>\n15<\/td>\n67<\/td>\nM6<\/td>\n<\/tr>\n
\u00d819.1<\/strong> (3\/4\u2033)<\/td>\n66<\/td>\n36<\/td>\n6<\/td>\n9\u00d79<\/td>\n15<\/td>\n67<\/td>\nM6<\/td>\n<\/tr>\n
\u00d825.4<\/strong> (1\u2033)<\/td>\n66<\/td>\n42<\/td>\n6<\/td>\n9\u00d79<\/td>\n15<\/td>\n67<\/td>\nM6<\/td>\n<\/tr>\n
\u00d838.1<\/strong> (1-1\/2\u2033)<\/td>\n66<\/td>\n50<\/td>\n7<\/td>\n11\u00d711<\/td>\n15<\/td>\n67<\/td>\nM6<\/td>\n<\/tr>\n
\u00d850.8<\/strong> (2\u2033)<\/td>\n70<\/td>\n50<\/td>\n7<\/td>\n11\u00d711<\/td>\n16<\/td>\n82<\/td>\nM6<\/td>\n<\/tr>\n
\u00d863.5<\/strong> (2-1\/2\u2033)<\/td>\n70<\/td>\n50<\/td>\n7<\/td>\n11\u00d711<\/td>\n16<\/td>\n98<\/td>\nM8<\/td>\n<\/tr>\n
\u00d876.2<\/strong> (3\u2033)<\/td>\n72<\/td>\n50\/70<\/td>\n7\/9<\/td>\n11\u00d711<\/td>\n16<\/td>\n113<\/td>\nM8<\/td>\n<\/tr>\n
\u00d8101.6<\/strong> (4\u2033)<\/td>\n82<\/td>\n50\/70<\/td>\n7\/9<\/td>\n11\u00d711<\/td>\n16<\/td>\n142<\/td>\nM8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2190 Scorri la tabella per visualizzare tutte le colonne \u2192<\/p>\n

Butterfly Valve or Ball Valve? Read This Before You Order<\/h2>\n

We make both, so we have no reason to push you toward the wrong one. This is the honest version:<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Your situation<\/th>\nBuy this<\/th>\nPerch\u00e9<\/th>\n<\/tr>\n<\/thead>\n
Tank isolation, large flow, on\/off duty, budget matters<\/td>\nButterfly valve<\/strong> (this page)<\/td>\nShort face-to-face, light, and the price gap widens as size goes up<\/td>\n<\/tr>\n
You need a straight, unobstructed bore through the valve<\/td>\nValvola a sfera<\/a><\/td>\nA butterfly disc sits in the flow path even when fully open. A ball valve bore does not.<\/td>\n<\/tr>\n
The medium carries particles, fibres or anything that can wedge<\/td>\nValvola a sfera<\/a><\/td>\nSolids caught between disc and seat stop a butterfly valve from sealing<\/td>\n<\/tr>\n
You need to divert flow between two lines<\/td>\nValvola a sfera a 3 vie<\/a><\/td>\nA butterfly valve is a two-port valve. It cannot divert.<\/td>\n<\/tr>\n
The line runs hot<\/td>\nAsk us first<\/td>\nThe seat, not the body, sets the temperature limit. Tell us your line temperature and we will confirm the valve suits it.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2190 Scorri la tabella per visualizzare tutte le colonne \u2192<\/p>\n

The Seat, Not the Body, Sets the Limit<\/h2>\n

The seat in this valve is PTFE<\/strong>. The 316 stainless body will take far more heat than the seat will, so the seat is what actually decides whether this valve suits your line \u2014 not the body material on the spec sheet.<\/p>\n

If your line runs hot \u2014 a steam-heated jacket, a hot flush, a hot wash cycle \u2014 tell us the temperature before you order<\/strong>. We will confirm whether this valve is the right one, and say so if it is not.<\/p>\n

Specifiche tecniche<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Articolo<\/th>\nSpecifiche tecniche<\/th>\n<\/tr>\n<\/thead>\n
Tipo di valvola<\/td>\nWafer body butterfly valve, clamp type<\/td>\n<\/tr>\n
Body & disc<\/td>\nacciaio inossidabile 316<\/td>\n<\/tr>\n
Sedile<\/td>\nPTFE<\/strong><\/td>\n<\/tr>\n
Gamma di taglie<\/td>\n\u00d812.7 \u2013 \u00d8101.6 mm (1\/2\u2033 \u2013 4\u2033 tube OD)<\/td>\n<\/tr>\n
Montaggio dell'attuatore<\/td>\nTop platform, 4 bolts \u2014 M6 (\u00d812.7 \u2013 \u00d850.8) or M8 (\u00d863.5 \u2013 \u00d8101.6)<\/td>\n<\/tr>\n
Attuatore<\/td>\nPneumatic, aluminium alloy or stainless steel cylinder \u2014 the same cylinder we fit to our ball valves<\/td>\n<\/tr>\n
Actuator action<\/td>\nDouble acting (DA) or spring return (SR)<\/td>\n<\/tr>\n
Paese di origine<\/td>\nProdotto a Taiwan<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Which Actuator: DA or SR?<\/h2>\n