{"id":3850,"date":"2025-10-17T09:24:34","date_gmt":"2025-10-17T01:24:34","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3850"},"modified":"2026-09-12T01:47:47","modified_gmt":"2026-09-11T17:47:47","slug":"%d8%b5%d9%85%d8%a7%d9%85-%d8%aa%d9%81%d8%b1%d9%8a%d8%ba-%d9%87%d9%88%d8%a7%d8%a6%d9%8a","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/ar\/product\/pneumatic-vacuum-valve\/","title":{"rendered":"Vacuum Rated Ball Valve, Pneumatic \u2013 NW50 KF (2\u2033), ISO-K DN80 \/ DN100, 316 Two-Piece (V-2VN \/ V-2BN-ISOK)"},"content":{"rendered":"
PDF<\/span>V-2VN<\/strong>NW50 ISO-KF (2\u2033) \u00b7 Dimension Sheet \u062a\u0646\u0632\u064a\u0644 \u0645\u0644\u0641 PDF \u2193<\/strong><\/span><\/a><\/div>\n

This vacuum rated ball valve is a two-piece 316 stainless steel pneumatic ball valve built for vacuum lines. It comes with two end styles: NW50 (ISO-KF \/ KF50) clamp flanges at 2\u2033 (model V-2VN), or ISO-K flanges at ISO80 (DN80, 3\u2033) and ISO100 (DN100, 4\u2033) (model V-2BN-ISOK). Both share the same full-port body, PTFE seats and an ISO 5211 pad that takes a rack-and-pinion air actuator, double acting (DA) or spring return (SR), so the valve opens and closes on a signal instead of by hand.<\/p>\n

Where This Vacuum Pump Isolation Valve Belongs in the System<\/h2>\n

A vacuum ball valve has a clear place in a vacuum system: on the pump side. Here is where this valve is used and what it does there.<\/p>\n

\n\n\n\n\n\n\n\n
Position in the system<\/th>\nWhat the valve does there<\/th>\n<\/tr>\n<\/thead>\n
Fore-line \/ roughing line isolation<\/strong><\/td>\nBetween the pump and the chamber, on the roughing or backing line: this is what a vacuum ball valve is for.<\/td>\n<\/tr>\n
Vacuum pump isolation<\/strong><\/td>\nShutting a pump out of the line so it can be serviced or swapped without venting the whole system.<\/td>\n<\/tr>\n
Gauge isolation<\/strong><\/td>\nProtecting a vacuum gauge during rough-down or venting.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2190 \u0645\u0631\u0631 \u0625\u0635\u0628\u0639\u0643 \u0639\u0644\u0649 \u0627\u0644\u062c\u062f\u0648\u0644 \u0644\u0639\u0631\u0636 \u062c\u0645\u064a\u0639 \u0627\u0644\u0623\u0639\u0645\u062f\u0629 \u2192<\/p>\n

For isolating a pump, a fore-line or a gauge, a ball valve is the straightforward, fast, full-bore answer, and with a pneumatic actuator it does that on a signal.<\/p>\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\n\n\n\n\n\n\n
\u0627\u0644\u0639\u0646\u0635\u0631<\/th>\n\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a<\/th>\n<\/tr>\n<\/thead>\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nTwo-piece vacuum ball valve, pneumatically actuated (V-2VN \/ V-2BN-ISOK)<\/td>\n<\/tr>\n
\u0645\u0627\u062f\u0629 \u0627\u0644\u0647\u064a\u0643\u0644<\/td>\nASTM A351 CF8M (316 stainless steel)<\/td>\n<\/tr>\n
\u0627\u0644\u0627\u062a\u0635\u0627\u0644<\/td>\nNW50 (ISO-KF \/ KF50) clamp flange \u2014 2\u2033 (V-2VN)
\nISO-K vacuum flange \u2014 ISO80 (DN80, 3\u2033) or ISO100 (DN100, 4\u2033) (V-2BN-ISOK)<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u064a\u0646\u0627\u0621<\/td>\nFull port on all sizes<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0642\u0639\u062f \u0648\u0627\u0644\u0645\u0627\u0646\u0639 \u0644\u0644\u062a\u0633\u0631\u0628<\/td>\nPTFE<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\nValve \u221220 \u00b0C to +180 \u00b0C \u00b7 Actuator \u221220 \u00b0C to +80 \u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0634\u063a\u0644<\/td>\nRack-and-pinion, aluminium alloy body, double acting (DA) or spring return (SR)<\/td>\n<\/tr>\n
\u0625\u0645\u062f\u0627\u062f \u0627\u0644\u0647\u0648\u0627\u0621<\/td>\n4 \u2013 8 \u0628\u0627\u0631 (\u062d\u0648\u0627\u0644\u064a 58 \u2013 116 \u0631\u0637\u0644 \u0644\u0643\u0644 \u0628\u0648\u0635\u0629 \u0645\u0631\u0628\u0639\u0629)<\/td>\n<\/tr>\n
\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0645\u0634\u063a\u0644<\/td>\nISO 5211 \u2014 the actuator bolts straight onto the valve, no bracket or coupling<\/td>\n<\/tr>\n
\u0645\u0648\u0636\u0639 \u0627\u0644\u0639\u0648\u062f\u0629 \u0627\u0644\u0632\u0646\u0628\u0631\u0643\u064a<\/td>\n\u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b \u0623\u0648 \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b \u2014 \u064a\u0631\u062c\u0649 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u062e\u064a\u0627\u0631 \u0639\u0646\u062f \u0627\u0644\u0637\u0644\u0628<\/td>\n<\/tr>\n
\u062e\u064a\u0627\u0631\u0627\u062a<\/td>\n\u0635\u0645\u0627\u0645 \u0645\u0644\u0641 \u0644\u0648\u0644\u0628\u064a\u060c \u0635\u0646\u062f\u0648\u0642 \u0645\u0641\u062a\u0627\u062d \u0627\u0644\u062d\u062f\u060c \u062c\u0647\u0627\u0632 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0648\u0636\u0639<\/td>\n<\/tr>\n
\u0627\u0644\u062e\u062f\u0645\u0629<\/td>\nAutomated isolation and sequencing on vacuum lines<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Vacuum Rated Valve Design: Why a Pneumatic Ball Valve<\/h2>\n