Vacuum Rated Ball Valve, Pneumatic – NW50 KF (2″), ISO-K DN80 / DN100, 316 Two-Piece (V-2VN / V-2BN-ISOK)

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″ (model V-2VN), or ISO-K flanges at ISO80 (DN80, 3″) and ISO100 (DN100, 4″) (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.

Where This Vacuum Pump Isolation Valve Belongs in the System

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.

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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.

主要技術規格

Vacuum Rated Valve Design: Why a Pneumatic Ball Valve

• 速度： 真空操作序列是按時間控制的。使用手動閥門時，操作員會成為瓶頸；而使用氣動執行器則不會。.
• 直接安裝： 閥體上已配備 ISO 5211 墊片，因此執行器可直接以螺栓固定，無需支架、無需聯軸器，也無需進行任何對位操作。.
• 氣壓損失時的彈簧回位： 當氣源中斷時，SR 單元會移動至您指定的位置。請告知我們該位置是開啟狀態還是關閉狀態，我們將據此進行製造。.
• 全孔徑： 沒有任何因素會使線徑變窄，因此電導率不會因閥門而受到影響。.
• 316 不鏽鋼，PTFE 閥座： a clean, corrosion-resistant combination for vacuum service.

Pneumatic Vacuum Valve Ends: NW50 KF or ISO-K

NW50 (ISO-KF / KF50), 2″ — V-2VN. The KF clamp flange seals with a single clamp and a centring ring, no bolts, so the valve connects straight into a standard KF line and opens tool-free for service. The dimension sheet above gives face-to-face length, height to actuator top, flange O.D. and tube O.D.

ISO-K ISO80 (DN80, 3″) and ISO100 (DN100, 4″) — V-2BN-ISOK. The ISO-K flange clamps straight into a standard ISO-K line, no adapter needed, for the larger fore-lines and pump connections where KF sizes run out.

應用

• 真空泵隔離 — shutting a pump out of the line for service without venting the system.
• Roughing and backing lines — isolating rotary-vane or scroll pumps from the chamber.
• Freeze-drying systems — isolating the vacuum line between the freeze dryer and its pump.
• Vacuum ovens — shutting off chamber vacuum before the pump is switched off.
• Laboratory vacuum piping — automated on/off on KF and ISO-K lines under PLC control.

相關產品：此閥門的手動版本是我們的 手動真空閥; ；關於在兩條真空管線之間進行分流，請參閱 三通真空球閥. KF/NW 定位環是 這裡.

常見問題

有哪些法蘭尺寸可供選擇？

NW50 (ISO-KF / KF50) clamp flange at 2″ (V-2VN), and ISO-K in ISO80 (DN80, 3″) and ISO100 (DN100, 4″) (V-2BN-ISOK). Each clamps straight into its standard line — no adapter needed.

What is the difference between the NW50 KF version and the ISO-K version?

The valve, seats, actuator and ISO 5211 mounting are the same. The difference is the flange: KF is a small clamp flange that seals with one clamp and a centring ring, used for the 2″ size; ISO-K is the larger flange standard used for the 3″ and 4″ sizes. Choose by the flange already on your line.

雙作用還是彈簧復位——我該選擇哪一種？

雙作用式閥門利用氣壓開啟，也利用氣壓關閉，且若氣源中斷，閥門會保持在最後一個位置。彈簧回位式閥門則是一端利用氣壓，另一端依靠彈簧，因此當氣壓中斷時，閥門會移動至預設位置。請告知該位置應為開啟或關閉狀態，我們將依此進行製造。.

工作溫度範圍為何？

Valve −20 °C to +180 °C, set by the PTFE seats. Actuator −20 °C to +80 °C.

執行器需要支架嗎？

不。閥體配備了符合 ISO 5211 標準的安裝墊片，因此執行器可直接鎖上——無需任何機加工，也無需對位。.

我可以加裝電磁閥或限位開關嗎？

是的。該執行器可搭配電磁閥進行控制、限位開關盒進行位置回饋，以及定位器進行調製操作——請在索取報價時告知我們您的控制配置。.

是否有最低訂購量？

不，我們沒有最低訂購量。請告訴我們您的需求，我們將為您報價。.