{"id":3840,"date":"2025-10-17T09:13:17","date_gmt":"2025-10-17T01:13:17","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3840"},"modified":"2026-07-15T13:06:51","modified_gmt":"2026-07-15T05:06:51","slug":"3-valvole-a-sfera-a-saldare","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/it\/product\/3pcs-butt-weld-ball-valve\/","title":{"rendered":"Valvola a sfera a saldare \u2014 Estremit\u00e0 allungate, a 3 pezzi, 316, 1000 WOG, a passaggio totale"},"content":{"rendered":"
PDF<\/span>V-3A-L2<\/span>Saldatura di testa estesa \u00b7 Scheda tecnica<\/span>Scarica \u2193<\/span><\/a><\/div>\n

Descrizione del prodotto<\/h2>\n

A valvola a sfera con giunzione a saldare<\/strong> in 316 stainless steel, three-piece body, 1000 WOG<\/strong>, full port, 3\/8\u2033 to 4\u2033. The weld ends are extended<\/strong> \u2014 noticeably longer than a standard butt weld end \u2014 and that is the entire point of this valve.<\/p>\n

Read the two sections below before you order.<\/strong> One tells you why the ends are long. The other tells you what pipe this valve fits, and what pipe it does not.<\/p>\n

Why the Weld Ends Are Long<\/h2>\n

A ball valve seals on PTFE. PTFE begins to degrade well below the temperature of a weld pool.<\/p>\n

On a standard butt weld valve, the weld sits close to the body \u2014 and the heat travels down the metal into the seats. That is why people weld a valve in, pressure-test the line, and find the valve leaking. The seals were cooked during installation, before the valve ever saw a drop of product.<\/p>\n

The extended ends move the weld away from the seats.<\/strong> The extra length is the heat sink. You weld the valve in fully assembled \u2014 no dismantling, no removing the ball and seats, no reassembling it in a trench.<\/p>\n

And because the body is three-piece, you can still take it apart afterwards: undo the body bolts, lift the centre section out, replace the seats, put it back. The ends stay welded in the line.<\/strong> Nothing gets cut out.<\/p>\n

What Pipe Does It Fit? (Read This)<\/h2>\n

We would rather lose the order than have you weld this valve into the wrong pipe.<\/p>\n

\n\n\n\n\n\n\n\n\n
 <\/th>\nQuesta valvola<\/th>\n<\/tr>\n<\/thead>\n
Pipe standard<\/strong><\/td>\nJIS<\/strong> pipe dimensions<\/td>\n<\/tr>\n
Wall thickness<\/strong><\/td>\nSchedule 5S only.<\/strong> We do not make it in other schedules.<\/td>\n<\/tr>\n
It fits<\/strong><\/td>\nJIS Sch 5S thin-wall stainless pipe<\/td>\n<\/tr>\n
It does not fit<\/strong><\/td>\nSchedule 40 or heavier pipe, without machining a transition. The wall thickness will not match and the bore will step at the weld.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

If you are running Schedule 40 pipe, this is the wrong valve and we will tell you so.<\/strong> Send us the pipe spec \u2014 standard, size and schedule \u2014 before you order, and we will confirm whether this valve mates with it. That one email is cheaper than a valve you cannot use.<\/p>\n

Dimensioni<\/h2>\n
\n\"Extended
The letters match the columns in the table below. Numbers \u2460\u2013\u2470 match the material list further down. Unit: mm.<\/figcaption><\/figure>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Dimensione<\/th>\n\u00d8 d
bore<\/span><\/th>\n		L
face to face<\/span><\/th>\n		H
height<\/span><\/th>\n		T
wall thk<\/span><\/th>\n		\u00d8 D
pipe O.D.<\/span><\/th>\n		D1
lever<\/span><\/th>\n<\/tr>\n<\/thead>\n
3\/8\u2033<\/strong><\/td>\n12.5<\/td>\n160<\/td>\n57.2<\/td>\n1.2<\/td>\n17.2<\/td>\n105<\/td>\n<\/tr>\n
1\/2\u2033<\/strong><\/td>\n15.0<\/td>\n180<\/td>\n59.1<\/td>\n1.65<\/td>\n21.7<\/td>\n105<\/td>\n<\/tr>\n
3\/4\u2033<\/strong><\/td>\n20.0<\/td>\n180<\/td>\n62.55<\/td>\n1.65<\/td>\n27.2<\/td>\n105<\/td>\n<\/tr>\n
1\u2033<\/strong><\/td>\n25.0<\/td>\n192<\/td>\n70.7<\/td>\n1.65<\/td>\n34.0<\/td>\n128<\/td>\n<\/tr>\n
1-1\/4\u2033<\/strong><\/td>\n32.0<\/td>\n205<\/td>\n76.2<\/td>\n1.65<\/td>\n42.7<\/td>\n128<\/td>\n<\/tr>\n
1-1\/2\u2033<\/strong><\/td>\n40.0<\/td>\n230<\/td>\n89.1<\/td>\n1.65<\/td>\n48.7<\/td>\n154<\/td>\n<\/tr>\n
2\u2033<\/strong><\/td>\n50.0<\/td>\n243<\/td>\n98.15<\/td>\n1.65<\/td>\n60.5<\/td>\n194<\/td>\n<\/tr>\n
2-1\/2\u2033<\/strong><\/td>\n65.0<\/td>\n294<\/td>\n110.6<\/td>\n2.1<\/td>\n76.1<\/td>\n194<\/td>\n<\/tr>\n
3\u2033<\/strong><\/td>\n80.0<\/td>\n320<\/td>\n124.0<\/td>\n2.1<\/td>\n89.0<\/td>\n276<\/td>\n<\/tr>\n
4\u2033<\/strong><\/td>\n100.0<\/td>\n357<\/td>\n168.5<\/td>\n2.1<\/td>\n114.3<\/td>\n335<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

\u00d8D is the pipe outside diameter. T is the wall thickness.<\/strong> Those are the two numbers a welder actually needs, and most valve makers do not publish them. Check them against your pipe before you order.<\/p>\n

Cosa contiene \u2014 Elenco completo dei materiali<\/h2>\n

All seventeen parts, and what each one is made of.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
No.<\/th>\nParte<\/th>\nMateriale<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nCorpo<\/strong><\/td>\nASTM A351 Gr. CF8M (316)<\/td>\n<\/tr>\n
2<\/td>\nTappo<\/strong><\/td>\nASTM A351 Gr. CF8M (316)<\/td>\n<\/tr>\n
3<\/td>\nPalla<\/strong><\/td>\nASTM A351 Gr. CF8M (316)<\/td>\n<\/tr>\n
4<\/td>\nEnd seals<\/strong><\/td>\nPTFE<\/td>\n<\/tr>\n
5<\/td>\nBolts<\/td>\nASTM A193 Gr. B8<\/td>\n<\/tr>\n
6<\/td>\nGuarnizione<\/td>\nPTFE<\/td>\n<\/tr>\n
7<\/td>\nRondella di spinta<\/td>\nPTFE<\/td>\n<\/tr>\n
8<\/td>\nStelo<\/strong><\/td>\nASTM A276 Gr. 316<\/td>\n<\/tr>\n
9<\/td>\nImballaggio<\/td>\nPTFE<\/td>\n<\/tr>\n
10<\/td>\nGhiandola<\/td>\nSS304<\/td>\n<\/tr>\n
11<\/td>\nBevel washer<\/td>\nSS304<\/td>\n<\/tr>\n
12<\/td>\nRondella elastica<\/td>\nSS304<\/td>\n<\/tr>\n
13<\/td>\nPiastra di bloccaggio<\/td>\nSS304<\/td>\n<\/tr>\n
14<\/td>\nManico<\/td>\nSS304<\/td>\n<\/tr>\n
15<\/td>\nManicotto di protezione<\/td>\nImpugnatura in vinile<\/td>\n<\/tr>\n
16<\/td>\nBolt washer<\/td>\nSS304<\/td>\n<\/tr>\n
17<\/td>\nBolt nuts<\/td>\nASTM A194 Gr. 8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

Specifiche tecniche<\/h2>\n
\n\n\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>\nThree-piece ball valve, extended butt weld ends<\/strong><\/td>\n<\/tr>\n
Pressione nominale<\/td>\n1000 WOG<\/strong><\/td>\n<\/tr>\n
Corpo, cappuccio e pallina<\/td>\nAcciaio inossidabile 316 (ASTM A351 CF8M)<\/td>\n<\/tr>\n
Stelo<\/td>\nASTM A276 Gr. 316<\/td>\n<\/tr>\n
Sedili e guarnizioni<\/td>\nPTFE<\/td>\n<\/tr>\n
Porto<\/td>\nPorta completa<\/strong><\/td>\n<\/tr>\n
Gamma di taglie<\/td>\n3\/8\u2033 \u2013 4\u2033<\/strong><\/td>\n<\/tr>\n
Pipe standard<\/td>\nJIS<\/strong><\/td>\n<\/tr>\n
Wall thickness<\/td>\nSchedule 5S<\/strong> (we do not make other schedules)<\/td>\n<\/tr>\n
Funzionamento<\/td>\nManual lever, lockable<\/td>\n<\/tr>\n
Paese di origine<\/td>\nProdotto a Taiwan<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Not Sure Butt Weld Is What You Want?<\/h2>\n

Welding a valve into a line is permanent. If you would rather be able to unscrew it, or if your pipe is not JIS Sch 5S, look at these instead:<\/p>\n