{"id":4188,"date":"2026-06-14T12:55:16","date_gmt":"2026-06-14T04:55:16","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=4188"},"modified":"2026-09-12T01:37:47","modified_gmt":"2026-09-11T17:37:47","slug":"valvola-a-sfera-a-depressione-manuale","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/it\/product\/manual-vacuum-ball-valve\/","title":{"rendered":"Vacuum Isolation Valve \u2013 Manual Two-Piece Ball Valve, ISO-K ISO80 \/ ISO100 (DN80 \/ DN100), 316, Lever Handle (V-2V)"},"content":{"rendered":"

Vacuum Isolation Valve for Large ISO-K Lines: Where the V-2V Fits<\/h2>\n

The V-2V is a manual vacuum isolation valve in a two-piece 316 stainless ball design, built for the large ISO-K clamp flanges: ISO80 (DN80, 3\u2033) and ISO100 (DN100, 4\u2033). A quarter turn of the stainless lever shuts a section of vacuum line in or out by hand, and the full bore leaves nothing in the gas path when open. It is the hand-operated valve for the big pump lines and manifolds that KF sizes do not reach. Pick by flange size and by how the line is operated:<\/p>\n\n\n\n\n\n\n\n
<\/th>\nQuesta valvola (V-2V)<\/th>\nA tre pezzi (V-3A \/ V-3AM)<\/th>\nPneumatic (V-2BN-ISOK \/ V-2VN)<\/th>\n<\/tr>\n<\/thead>\n
Flange sizes<\/b><\/td>\nISO-K ISO80 \/ ISO100 (DN80 \/ DN100)<\/td>\nKF NW16\u2013NW50 and ISO-K ISO80<\/td>\nKF NW50 and ISO-K DN80 \/ DN100<\/td>\n<\/tr>\n
Funzionamento<\/b><\/td>\nStainless lever, quarter-turn<\/td>\nLever, or ISO 5211 pad for a later actuator<\/td>\nPneumatic actuator, double acting or spring return<\/td>\n<\/tr>\n
Ideale per<\/b><\/td>\nHand-operated isolation on large ISO-K pump lines and manifolds<\/td>\nSmall KF lines; body unbolts for service<\/td>\nLines switched by a PLC or a control signal<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Specifiche tecniche principali<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tipo<\/b><\/td>\nManual vacuum isolation valve: two-piece ball valve, full port<\/td>\n<\/tr>\n
Modello<\/b><\/td>\nV-2V<\/td>\n<\/tr>\n
Taglie<\/b><\/td>\nDN80 (3\u2033) and DN100 (4\u2033)<\/td>\n<\/tr>\n
Raccordi terminali<\/b><\/td>\nISO-K clamp flange: ISO80 on DN80, ISO100 on DN100<\/td>\n<\/tr>\n
Corpo e palla<\/b><\/td>\nCF8M (cast 316 stainless steel) as standard; CF8 (cast 304) made to order<\/td>\n<\/tr>\n
Sedili e guarnizioni<\/b><\/td>\nPTFE seats and PTFE vacuum seals<\/td>\n<\/tr>\n
Porto<\/b><\/td>\nFull port: unrestricted bore through the valve<\/td>\n<\/tr>\n
Funzionamento<\/b><\/td>\nStainless steel lever handle, quarter-turn; manual only<\/td>\n<\/tr>\n
Temperatura di esercizio<\/b><\/td>\n\u221220 \u00b0C to +180 \u00b0C (valve body, set by the PTFE seats)<\/td>\n<\/tr>\n
Servizio<\/b><\/td>\nVacuum and negative-pressure isolation: on\/off duty, not for throttling<\/td>\n<\/tr>\n
Automated version<\/b><\/td>\nSame ISO-K body with a pneumatic actuator: see the vacuum rated ball valve, pneumatic<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Why a Two-Piece Ball Valve as a Vacuum Isolation Valve<\/h2>\n

An isolation valve has one job: shut a section of the system in or out, fully open or fully closed. A ball valve does that with a quarter turn, and in the open position the full-port bore puts nothing in the gas path, so the valve does not choke the pumping speed of the line it sits in. On a DN80 or DN100 line that matters: the whole point of a large ISO-K flange is conductance, and a valve with a reduced bore would give part of it back.<\/p>\n

The two-piece body keeps the valve short and compact for its flange size. The body and end cap close around the ball and seats, with an ISO-K flange on either end, so the valve drops straight into a standard ISO-K line with claw clamps and a centering ring, no adapters and no welding. Seats and vacuum seals are PTFE; body and ball are cast 316 (CF8M) as standard, with 304 (CF8) made to order.<\/p>\n

ISO-K ISO80 and ISO100 Ends: a DN80 or DN100 Ball Valve for Vacuum Lines<\/h2>\n

ISO-K is the clamp-flange standard for vacuum lines larger than the KF (NW) series. The flange has a grooved outer edge that claw clamps grip, and the seal is a centering ring with an O-ring held between the two flanges: no bolts through the flange, no threads, no welding, and the joint opens with hand tools for maintenance. ISO80 is the DN80 (3\u2033) size and ISO100 the DN100 (4\u2033) size. Match the valve to the flange already on your line; for the smaller KF sizes and ISO80 in a three-piece body, see the manual vacuum valve, KF and ISO80<\/a>.<\/p>\n

Applicazioni<\/h2>\n

Where a manual isolation valve of this size and type is actually used on vacuum systems, and why a ball valve is the right tool there:<\/p>\n