{"id":3852,"date":"2025-10-17T09:26:15","date_gmt":"2025-10-17T01:26:15","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3852"},"modified":"2026-09-12T01:44:49","modified_gmt":"2026-09-11T17:44:49","slug":"3-%d1%85%d0%be%d0%b4%d0%be%d0%b2%d0%be%d0%b9-%d0%b2%d0%b0%d0%ba%d1%83%d1%83%d0%bc%d0%bd%d1%8b%d0%b9-%d1%88%d0%b0%d1%80%d0%be%d0%b2%d0%be%d0%b9-%d0%ba%d1%80%d0%b0%d0%bd","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/ru\/product\/3-way-vacuum-ball-valve\/","title":{"rendered":"3-Way Vacuum Ball Valve \u2013 Manual or Pneumatic, KF NW40 \/ NW50, 316, L-Port or T-Port (V-3WV \/ V-3WVM)"},"content":{"rendered":"
\nPDF<\/span>NW40 3-\u0445\u043e\u0434\u043e\u0432\u043e\u0439<\/span>\u0412\u0430\u043a\u0443\u0443\u043c \u00b7 NW\/KF \u00b7 \u0422\u0430\u0431\u043b\u0438\u0446\u0430 \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u0432<\/span>\u0421\u043a\u0430\u0447\u0430\u0442\u044c \u2193<\/span><\/a>
\nPDF<\/span>NW50 3-\u043f\u043e\u043b\u043e\u0441\u043d\u0430\u044f<\/span>\u0412\u0430\u043a\u0443\u0443\u043c \u00b7 NW\/KF \u00b7 \u0422\u0430\u0431\u043b\u0438\u0446\u0430 \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u0432<\/span>\u0421\u043a\u0430\u0447\u0430\u0442\u044c \u2193<\/span><\/a>\n<\/div>\n

Manual or Pneumatic? One 3-Way Vacuum Ball Valve, Two Builds (V-3WV \/ V-3WVM)<\/h2>\n

This 3-way vacuum ball valve switches a vacuum line: one pump shared between two systems, or one line isolated or connected from a single valve. The body is cast 316 stainless steel (ASTM A351 CF8M) with a polished surface and PTFE seats, on KF (NW) clamp flanges in NW40 (1-1\/2\u2033) and NW50 (2\u2033). The same body comes in two builds. The V-3WV has a stainless quarter-turn lever with a locking plate. The V-3WVM carries a rack-and-pinion air actuator on an ISO 5211 pad, so a PLC or solenoid does the switching and no one has to stand at the valve.<\/p>\n\n\n\n\n\n\n\n
<\/th>\nV-3WV (manual)<\/th>\nV-3WVM (pneumatic)<\/th>\n<\/tr>\n<\/thead>\n
\u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f<\/b><\/td>\n\u0420\u0443\u0447\u043a\u0430 \u0438\u0437 \u043d\u0435\u0440\u0436\u0430\u0432\u0435\u044e\u0449\u0435\u0439 \u0441\u0442\u0430\u043b\u0438 \u0441 \u043f\u043e\u0432\u043e\u0440\u043e\u0442\u043e\u043c \u043d\u0430 \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u044c \u043e\u0431\u043e\u0440\u043e\u0442\u0430 \u0438 \u0444\u0438\u043a\u0441\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u043f\u043b\u0430\u0441\u0442\u0438\u043d\u043e\u0439<\/td>\nRack-and-pinion air actuator, double acting (DA) or spring return (SR), 4\u20138 bar<\/td>\n<\/tr>\n
Control options<\/b><\/td>\n\u2014<\/td>\n\u042d\u043b\u0435\u043a\u0442\u0440\u043e\u043c\u0430\u0433\u043d\u0438\u0442\u043d\u044b\u0439 \u043a\u043b\u0430\u043f\u0430\u043d, \u0431\u043b\u043e\u043a \u043a\u043e\u043d\u0446\u0435\u0432\u044b\u0445 \u0432\u044b\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u0435\u0439, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0435\u0440<\/td>\n<\/tr>\n
\u0418\u0434\u0435\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u0438\u0442 \u0434\u043b\u044f<\/b><\/td>\nSwitching points operated by hand a few times a day<\/td>\nLines switched on a signal, sequenced by a PLC, or cycled often<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L-Port or T-Port 3-Way Ball Valve for Vacuum Lines<\/h2>\n

The ball is bored L-port or T-port. Both patterns are available in NW40 and NW50; tell us which one you need when you request a quote.<\/p>\n\n\n\n\n\n\n
<\/th>\nL-port 3-way ball valve<\/th>\nT-port 3-way ball valve<\/th>\n<\/tr>\n<\/thead>\n
Flow path<\/b><\/td>\nConnects the common port to one of the two other ports at a time; the third port is always closed<\/td>\nConnects two ports, or all three ports at once<\/td>\n<\/tr>\n
\u0422\u0438\u043f\u0438\u0447\u043d\u044b\u0435 \u0441\u043b\u0443\u0436\u0435\u0431\u043d\u044b\u0435 \u043e\u0431\u044f\u0437\u0430\u043d\u043d\u043e\u0441\u0442\u0438<\/b><\/td>\nSelector: one pump, one line at a time<\/td>\nCombining two lines, or keeping a second path open while switching<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0438<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0422\u0438\u043f<\/b><\/td>\n3-way vacuum ball valve, full port, on\/off duty<\/td>\n<\/tr>\n
\u041c\u043e\u0434\u0435\u043b\u0438<\/b><\/td>\nV-3WV (manual lever) \/ V-3WVM (pneumatic actuator)<\/td>\n<\/tr>\n
\u0420\u0430\u0437\u043c\u0435\u0440\u044b<\/b><\/td>\nNW40 (1-1\/2\u2033) \u0438 NW50 (2\u2033)<\/td>\n<\/tr>\n
\u041a\u043e\u043d\u0446\u0435\u0432\u044b\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f<\/b><\/td>\nKF (NW) vacuum flange with clamp and centering ring, no bolts<\/td>\n<\/tr>\n
Port pattern<\/b><\/td>\nL-\u043e\u0431\u0440\u0430\u0437\u043d\u044b\u0439 \u043f\u043e\u0440\u0442 \u0438\u043b\u0438 T-\u043e\u0431\u0440\u0430\u0437\u043d\u044b\u0439 \u043f\u043e\u0440\u0442<\/td>\n<\/tr>\n
\u0422\u0435\u043b\u043e \u0438 \u043c\u044f\u0447<\/b><\/td>\nASTM A351 CF8M (cast 316 stainless steel), polished, as standard; CF8 (cast 304) made to order<\/td>\n<\/tr>\n
\u041c\u0435\u0441\u0442\u043e<\/b><\/td>\nPTFE<\/td>\n<\/tr>\n
\u0414\u0438\u0430\u043c\u0435\u0442\u0440<\/b><\/td>\nFull port, unrestricted bore through the valve<\/td>\n<\/tr>\n
\u0420\u0430\u0431\u043e\u0447\u0430\u044f \u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u0430<\/b><\/td>\nValve body \u221220 \u00b0C to +180 \u00b0C (set by the PTFE seats); actuator \u221220 \u00b0C to +80 \u00b0C<\/td>\n<\/tr>\n
\u0420\u0443\u0447\u043d\u043e\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435<\/b><\/td>\nV-3WV: quarter-turn stainless lever with locking plate<\/td>\n<\/tr>\n
\u041f\u0440\u0438\u0432\u043e\u0434<\/b><\/td>\nV-3WVM: rack-and-pinion, aluminum alloy body, double acting (DA) or spring return (SR), air supply 4\u20138 bar (about 58\u2013116 psi), ISO 5211 direct mount<\/td>\n<\/tr>\n
Control options<\/b><\/td>\n\u042d\u043b\u0435\u043a\u0442\u0440\u043e\u043c\u0430\u0433\u043d\u0438\u0442\u043d\u044b\u0439 \u043a\u043b\u0430\u043f\u0430\u043d, \u0431\u043b\u043e\u043a \u043a\u043e\u043d\u0446\u0435\u0432\u044b\u0445 \u0432\u044b\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u0435\u0439, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0435\u0440<\/td>\n<\/tr>\n
\u0421\u0435\u0440\u0432\u0438\u0441<\/b><\/td>\nSwitching and isolating vacuum lines. On\/off duty, not for throttling<\/td>\n<\/tr>\n
Dimension sheets<\/b><\/td>\nSee the PDF downloads above (NW40, NW50)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Why a Ball Valve for Switching a Vacuum Line<\/h2>\n

A quarter turn moves the ball from one path to the other, and in either position the full-port bore leaves nothing in the gas path, so the valve does not choke the pumping speed of the line it sits in. That is the job this valve is built for: choosing which line the pump sees, or shutting a line in or out. It is not a regulating valve.<\/p>\n

The PTFE seats wipe across the ball every time it turns, which is why ball valves hold up in lines that carry deposits or particles better than a bellows-sealed valve would. The seats set the temperature limit of the body, \u221220 \u00b0C to +180 \u00b0C.<\/p>\n

KF NW40 \/ NW50 Ends<\/h2>\n

KF (also written NW, QF or ISO-KF) is the small quick-clamp vacuum flange: a centering ring with an O-ring sits between two flanges and a hand-closed clamp holds them together, no bolts and no tools. This valve is made in NW40 and NW50, the two largest KF sizes, matching 1-1\/2\u2033 and 2\u2033 vacuum lines. For KF16 to KF50 two-way isolation see the manual vacuum valve; for larger ISO-K DN80 \/ DN100 lines see the vacuum rated ball valve, pneumatic. Both are linked under Applications below.<\/p>\n

\u041f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f<\/h2>\n

Where a 3-way vacuum ball valve of this type is actually used:<\/p>\n