{"id":3849,"date":"2025-10-17T09:21:39","date_gmt":"2025-10-17T01:21:39","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3849"},"modified":"2026-07-17T13:25:39","modified_gmt":"2026-07-17T05:25:39","slug":"valvula-de-vacio-manual","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/es\/product\/manual-vacuum-valve\/","title":{"rendered":"V\u00e1lvula de bola de vac\u00edo manual y de montaje elevado, acero inoxidable 316 \u2014 NW16\/25\/40\/50 KF e ISO80, de tres piezas"},"content":{"rendered":"
\nPDF<\/span>V-3A al vac\u00edo<\/span>Manual \u00b7 KF \/ ISO-K \u00b7 Ficha t\u00e9cnica de dimensiones<\/span>Descargar \u2193<\/span><\/a>
\nPDF<\/span>V-3AM NW<\/span>Montaje ISO 5211 \u00b7 NW\/KF \u00b7 Ficha t\u00e9cnica de dimensiones<\/span>Descargar \u2193<\/span><\/a>\n<\/div>\n

Descripci\u00f3n del producto<\/h2>\n

This vacuum ball valve is a three-piece, full-port valve in cast 316 stainless steel (ASTM A351 CF8M) with PTFE seat and gaskets, built for vacuum and negative-pressure isolation. Flange options cover KF (NW16, NW25, NW40, NW50) and ISO-K (ISO80), sizes 1\/2\u2033 to 2-1\/2\u2033 \u2014 the clamp-style flanges connect and open without tools, the way vacuum lines are built.<\/p>\n

Two builds share the same body: the V-3A<\/b> with a stainless lever for manual operation, and the V-3AM<\/b> with an ISO 5211 direct-mount pad and reinforced stem seal (Viton O-ring plus PTFE packing) that takes a pneumatic or electric actuator without brackets. Need larger or automated vacuum valves? See the pneumatic vacuum ball valve (ISO-K DN80\/DN100)<\/a>, the two-piece manual vacuum ball valve (ISO100)<\/a>, o ver todos v\u00e1lvulas de vac\u00edo<\/a>.<\/p>\n

Manual or Direct-Mount?<\/h2>\n\n\n\n\n\n\n\n
<\/th>\nV-3A (manual)<\/th>\nV-3AM (direct-mount)<\/th>\n<\/tr>\n<\/thead>\n
Funcionamiento<\/b><\/td>\nQuarter-turn stainless lever with locking plate<\/td>\nISO 5211 pad for a pneumatic or electric actuator \u2014 lever included for manual use<\/td>\n<\/tr>\n
Stem seal<\/b><\/td>\nPTFE packing<\/td>\nViton O-ring plus PTFE packing<\/td>\n<\/tr>\n
Ideal para<\/b><\/td>\nHand-operated isolation points<\/td>\nLines that are \u2014 or may later be \u2014 automated<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Especificaciones t\u00e9cnicas clave<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/b><\/td>\nVacuum ball valve \u2014 three-piece, full port<\/td>\n<\/tr>\n
Models<\/b><\/td>\nV-3A (manual) \/ V-3AM (ISO 5211 direct-mount)<\/td>\n<\/tr>\n
Gama de tallas<\/b><\/td>\n1\/2\u2033 \u2013 2-1\/2\u2033<\/td>\n<\/tr>\n
Connections<\/b><\/td>\nKF clamp flange (NW16 \/ NW25 \/ NW40 \/ NW50) or ISO-K (ISO80)<\/td>\n<\/tr>\n
Body, cap & ball<\/b><\/td>\nASTM A351 CF8M: la variante de fundici\u00f3n del acero inoxidable 316<\/td>\n<\/tr>\n
Seat & gaskets<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
V\u00e1stago<\/b><\/td>\nASTM A276 SS316 (V-3A); reinforced seal with Viton O-ring on V-3AM<\/td>\n<\/tr>\n
Servicio<\/b><\/td>\nVacuum and negative-pressure isolation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Materiales<\/h2>\n

V-3A manual version \u2014 17 parts, matching the numbered circles \u2460\u2013\u2470 in the drawing below. The V-3AM direct-mount version shares the wetted parts and adds the Viton O-ring stem seal, Belleville washer and ISO 5211 hardware (20 parts \u2014 see its dimension sheet PDF).<\/p>\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>\nMaterial<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nCuerpo<\/b><\/td>\nA351 CF8M<\/td>\n<\/tr>\n
2<\/td>\nGorra<\/b><\/td>\nA351 CF8M<\/td>\n<\/tr>\n
3<\/td>\nBal\u00f3n<\/b><\/td>\nA351 CF8M<\/td>\n<\/tr>\n
4<\/td>\nAsiento<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
5<\/td>\nJunta<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
6<\/td>\nThrust washer<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
7<\/td>\nV\u00e1stago<\/b><\/td>\nA276 SS316<\/td>\n<\/tr>\n
8<\/td>\nEmbalaje<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
9<\/td>\nGl\u00e1ndula<\/b><\/td>\nSS304<\/td>\n<\/tr>\n
10<\/td>\nBevel washer<\/b><\/td>\nAISI 301<\/td>\n<\/tr>\n
11<\/td>\nAsa<\/b><\/td>\nSS304<\/td>\n<\/tr>\n
12<\/td>\nArandela el\u00e1stica<\/b><\/td>\nSS304<\/td>\n<\/tr>\n
13<\/td>\nBolts<\/b><\/td>\nAISI 304<\/td>\n<\/tr>\n
14<\/td>\nBolt washer<\/b><\/td>\nAISI 304<\/td>\n<\/tr>\n
15<\/td>\nBolt nut<\/b><\/td>\nAISI 304<\/td>\n<\/tr>\n
16<\/td>\nHandle sleeve<\/b><\/td>\nVinyl grip<\/td>\n<\/tr>\n
17<\/td>\nPlaca de bloqueo<\/b><\/td>\nSS304<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Dimensiones (mm)<\/h2>\n
\n\"Three-piece
V-3A manual version shown. Letters match the columns below. Numbers \u2460\u2013\u2470 match the materials table above. Unit: mm.<\/figcaption><\/figure>\n

L, bore \u00d8d1, flange \u00d8d2 and flange thickness C are identical for both builds; H differs (lever vs mounting pad), and S is the V-3AM stem flat. Full drawings in the V-3A<\/a> y V-3AM<\/a> dimension sheets (PDF).<\/p>\n\n\n\n\n\n\n\n\n\n\n
Size \/ Flange<\/th>\nD1 (V-3A)<\/th>\nH (V-3A)<\/th>\nH (V-3AM)<\/th>\nL<\/th>\nBore \u00d8d1<\/th>\nFlange \u00d8d2<\/th>\nC<\/th>\nS (V-3AM)<\/th>\n<\/tr>\n<\/thead>\n
1\/2\u2033 NW16<\/b><\/td>\n103<\/td>\n56<\/td>\n38<\/td>\n92<\/td>\n17<\/td>\n30<\/td>\n2.3<\/td>\n9<\/td>\n<\/tr>\n
1\u2033 NW25<\/b><\/td>\n130<\/td>\n63<\/td>\n49<\/td>\n120<\/td>\n26<\/td>\n40<\/td>\n2.5<\/td>\n11<\/td>\n<\/tr>\n
1-1\/4\u2033 NW40<\/b><\/td>\n131<\/td>\n68<\/td>\n55<\/td>\n112<\/td>\n41<\/td>\n55<\/td>\n2.5<\/td>\n11<\/td>\n<\/tr>\n
1-1\/2\u2033 NW50<\/b><\/td>\n153<\/td>\n90<\/td>\n67<\/td>\n133<\/td>\n52<\/td>\n75<\/td>\n2.5<\/td>\n14<\/td>\n<\/tr>\n
2\u2033 NW50<\/b><\/td>\n194<\/td>\n98<\/td>\n75<\/td>\n146<\/td>\n52<\/td>\n75<\/td>\n2.5<\/td>\n14<\/td>\n<\/tr>\n
2-1\/2\u2033 ISO80<\/b><\/td>\n225<\/td>\n109<\/td>\n105<\/td>\n209<\/td>\n83<\/td>\n110<\/td>\n2.5<\/td>\n17<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Campos de aplicaci\u00f3n y ubicaciones<\/h2>\n