Vacuum Isolation Valve – Manual Two-Piece Ball Valve, ISO-K ISO80 / ISO100 (DN80 / DN100), 316, Lever Handle (V-2V)

Vacuum Isolation Valve for Large ISO-K Lines: Where the V-2V Fits

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″) and ISO100 (DN100, 4″). 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:

Caractéristiques techniques principales

Why a Two-Piece Ball Valve as a Vacuum Isolation Valve

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.

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.

ISO-K ISO80 and ISO100 Ends: a DN80 or DN100 Ball Valve for Vacuum Lines

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″) size and ISO100 the DN100 (4″) 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.

Applications

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:

• Fore-line and roughing-line isolation: between the backing pump and the system on DN80 and DN100 lines, so the pump can be serviced or vented while the line upstream stays under vacuum.
• Gauge isolation: blocking a gauge port so the gauge can be fitted, removed or kept off the line while a section is vented.
• Deposition-heavy process lines: roughing and exhaust piping on PVD, CVD, ALD and sputtering systems, where the PTFE seats wipe the ball clean on every turn and the full 3″ or 4″ bore keeps the conductance a large line was built for.
• Points that will be automated later: the same ISO-K body is made with a pneumatic actuator, so a manual valve here can be swapped for the pneumatic version when the line moves to PLC control.

Not for throttling, since a ball valve is an on/off device, and not as the main isolation valve on a large coater or sputter chamber, where vacuum systems use pendulum or gate valves instead.

Related: for the same ISO-K body with a pneumatic actuator see the vacuum rated ball valve, pneumatic (KF & ISO-K); for switching between two vacuum lines see the Vanne à bille à 3 voies à dépression. KF/NW centering rings are stocked to match. Browse all vannes à vide.

FAQ

ISO80 or ISO100: which should I order?

Match the ISO-K flange size your line already uses: ISO80 is DN80 (3″), ISO100 is DN100 (4″). Both are available; state the size when you request a quote.

What is the difference between this and the three-piece vacuum valve?

This valve is a compact two-piece body for the large ISO-K flanges, ISO80 and ISO100. The three-piece manual vacuum valve covers the smaller KF sizes (NW16–NW50) plus ISO80, and its body unbolts in the line for servicing.

What is an ISO-K flange?

A clamp-style vacuum flange standard for larger bores. The flange has a grooved edge that claw clamps grip, sealing on a centering ring: no threads, no welding, and quick to open for maintenance.

Quels joints utilise-t-on ?

PTFE, for both the seats and the vacuum seals, on a cast 316 stainless body.

Est-ce un port complet ?

Yes. The bore is unrestricted through the valve, so in the open position it does not reduce the conductance of the DN80 or DN100 line it sits in.

Can this valve be automated?

Not this build: the V-2V is manual only. If the line is or may later be automated, use the pneumatic vacuum rated ball valve (ISO-K DN80/DN100), which is the same body with an actuator.

What is the operating temperature range?

Valve body −20 °C to +180 °C, set by the PTFE seats.

Is it available in 304 stainless?

316 (cast CF8M) is standard. 304 (cast CF8) is made to order; tell us the size, flange and quantity when you request a quote.

Quel est le montant minimum de la commande ?

No minimum order quantity. We accept orders of any size, including small trial orders; tell us what you need and we will quote it.