{"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":"%d8%b5%d9%85%d8%a7%d9%85-%d8%aa%d9%81%d8%b1%d9%8a%d8%ba-%d9%8a%d8%af%d9%88%d9%8a","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/ar\/product\/manual-vacuum-valve\/","title":{"rendered":"\u0635\u0645\u0627\u0645 \u0643\u0631\u0648\u064a \u0641\u0631\u0627\u063a\u064a \u064a\u062f\u0648\u064a \u0648\u0645\u062b\u0628\u062a \u0641\u064a \u0645\u0643\u0627\u0646 \u0645\u0631\u062a\u0641\u0639\u060c \u0645\u0646 \u0627\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0635\u062f\u0623 316 \u2014 NW16\/25\/40\/50 KF \u0648 ISO80\u060c \u0645\u0643\u0648\u0646 \u0645\u0646 \u062b\u0644\u0627\u062b \u0642\u0637\u0639"},"content":{"rendered":"
\nPDF<\/span>V-3A \u0627\u0644\u0641\u0631\u0627\u063a<\/span>\u0627\u0644\u062f\u0644\u064a\u0644 \u00b7 KF \/ ISO-K \u00b7 \u0648\u0631\u0642\u0629 \u0627\u0644\u0623\u0628\u0639\u0627\u062f<\/span>\u062a\u0646\u0632\u064a\u0644 \u2193<\/span><\/a>
\nPDF<\/span>V-3AM NW<\/span>\u062d\u0627\u0645\u0644 ISO 5211 \u00b7 NW\/KF \u00b7 \u0648\u0631\u0642\u0629 \u0627\u0644\u0623\u0628\u0639\u0627\u062f<\/span>\u062a\u0646\u0632\u064a\u0644 \u2193<\/span><\/a>\n<\/div>\n

\u0648\u0635\u0641 \u0627\u0644\u0645\u0646\u062a\u062c<\/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>, \u060c \u0623\u0648 \u062a\u0635\u0641\u062d \u0627\u0644\u0643\u0644 \u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u062a\u0641\u0631\u064a\u063a<\/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
\u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/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
\u0627\u0644\u0623\u0641\u0636\u0644 \u0644\u0640<\/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

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/b><\/td>\nVacuum ball valve \u2014 three-piece, full port<\/td>\n<\/tr>\n
\u0627\u0644\u0646\u0645\u0627\u0630\u062c<\/b><\/td>\nV-3A (manual) \/ V-3AM (ISO 5211 direct-mount)<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u0627\u0644\u0623\u062d\u062c\u0627\u0645<\/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
\u0627\u0644\u062c\u0633\u0645\u060c \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0643\u0631\u0629<\/b><\/td>\nASTM A351 CF8M \u2014 \u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0645\u0635\u0628\u0648\u0628 \u0644\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0635\u062f\u0623 316<\/td>\n<\/tr>\n
Seat & gaskets<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
\u0627\u0644\u062c\u0630\u0639<\/b><\/td>\nASTM A276 SS316 (V-3A); reinforced seal with Viton O-ring on V-3AM<\/td>\n<\/tr>\n
\u0627\u0644\u062e\u062f\u0645\u0629<\/b><\/td>\nVacuum and negative-pressure isolation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0627\u0644\u0645\u0648\u0627\u062f<\/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
\u0644\u0627 \u064a\u0648\u062c\u062f<\/th>\n\u062c\u0632\u0621<\/th>\n\u0627\u0644\u0645\u0648\u0627\u062f<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\n\u0627\u0644\u062c\u0633\u0645<\/b><\/td>\nA351 CF8M<\/td>\n<\/tr>\n
2<\/td>\n\u0627\u0644\u0642\u0628\u0639\u0629<\/b><\/td>\nA351 CF8M<\/td>\n<\/tr>\n
3<\/td>\n\u0627\u0644\u0643\u0631\u0629<\/b><\/td>\nA351 CF8M<\/td>\n<\/tr>\n
4<\/td>\n\u0627\u0644\u0645\u0642\u0639\u062f<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
5<\/td>\n\u062d\u0634\u064a\u0629<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
6<\/td>\n\u062d\u0634\u064a\u0629 \u0627\u0644\u062f\u0641\u0639<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
7<\/td>\n\u0627\u0644\u062c\u0630\u0639<\/b><\/td>\nA276 SS316<\/td>\n<\/tr>\n
8<\/td>\n\u0627\u0644\u062a\u0639\u0628\u0626\u0629<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
9<\/td>\n\u0627\u0644\u063a\u062f\u0629<\/b><\/td>\nSS304<\/td>\n<\/tr>\n
10<\/td>\nBevel washer<\/b><\/td>\nAISI 301<\/td>\n<\/tr>\n
11<\/td>\n\u0627\u0644\u0645\u0642\u0628\u0636<\/b><\/td>\nSS304<\/td>\n<\/tr>\n
12<\/td>\n\u062d\u0644\u0642\u0629 \u0632\u0646\u0628\u0631\u0643\u064a\u0629<\/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>\n\u062c\u0631\u0627\u0628 \u0627\u0644\u0645\u0642\u0628\u0636<\/b><\/td>\n\u0645\u0642\u0628\u0636 \u0645\u0646 \u0627\u0644\u0641\u064a\u0646\u064a\u0644<\/td>\n<\/tr>\n
17<\/td>\n\u0644\u0648\u062d\u0629 \u0627\u0644\u0642\u0641\u0644<\/b><\/td>\nSS304<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0627\u0644\u0623\u0628\u0639\u0627\u062f (\u0645\u0645)<\/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> \u0648 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

\u0645\u062c\u0627\u0644\u0627\u062a \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0648\u0627\u0644\u0645\u0648\u0627\u0642\u0639<\/h2>\n