Product Name
316 Stainless Pneumatic Vacuum Ball Valve – 2-Piece, NW50 (ISO-KF) Clamp
Product Summary
A two-piece 316 stainless steel pneumatic ball valve with NW50 (ISO-KF / KF50) clamp ends — a rack-and-pinion air actuator (double-acting or spring-return, 4–8 bar) opens and closes the line on a signal. Full port, PTFE seats, -20 °C to +180 °C, ISO 5211 direct mount. The KF clamp and centring ring seal with no bolts, for vacuum and high-purity lines.
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ISO 9001 · CE · Manufacturer since 1999
Product Description
This is a two-piece 316 stainless steel pneumatic ball valve terminated with NW50 (ISO-KF / KF50) quick-clamp flanges. A rack-and-pinion air actuator turns the ball a quarter turn to open or shut the line, and the KF clamp ends connect and seal with a single clamp and centring ring — no bolts — so the valve installs and services fast on vacuum and high-purity facility piping.
PTFE seats give a tight, low-friction shut-off, and the actuator is available double-acting (DA) or spring-return (SR), ready for solenoid valves and limit switches. Need to switch flow between lines? See the 3-way pneumatic vacuum ball valve. For larger ISO-K lines, see the ISO-K DN80/DN100 pneumatic vacuum valve, or browse all vacuum valves.
Valve Specifications
| Type | 2-piece vacuum ball valve, pneumatically actuated |
| Model | V-2VN |
| Connection | NW50 (ISO-KF / KF50) clamp flange — clamp and centring ring, no bolts |
| Port | Full port |
| Body & ball | Two-piece, ASTM 316 stainless steel |
| Seat & seal | PTFE |
| Working temperature | -20 °C to +180 °C |
| Mounting | ISO 5211 pad for the actuator |
Actuator Specifications
| Type | Rack-and-pinion, aluminum alloy body |
| Acting | Double Acting (DA) or Spring Return (SR) |
| Air supply | 4 – 8 bar (about 58 – 116 psi) |
| Options | Solenoid valve, limit switch box, positioner |
Dimensions
Advantages & Benefits
- Tool-free connection: the NW50 KF clamp and centring ring seal without bolts — fast to install and to open for service.
- Full-port flow: an unrestricted bore keeps conductance high on vacuum lines.
- Automated on/off: the actuator opens and closes on a signal, with DA or SR to suit your fail position.
- 316 stainless, PTFE seats: a clean, corrosion-resistant, low-outgassing combination for vacuum and high-purity service.
Application Fields & Locations
- Vacuum facility piping: automated isolation on NW50 KF lines.
- High-purity & semiconductor support: 316 stainless clamp-flanged piping.
- Laboratory & process vacuum: remote or sequenced on/off under PLC control.
- Coating & thin-film systems: automated vacuum isolation between process steps.
FAQ
What flange does it use? NW50 (also written ISO-KF or KF50) — a clamp flange that seals with a single clamp and a centring ring, no bolts. It connects straight into standard KF vacuum lines and opens tool-free for service.
Double-acting or spring-return — which should I choose? Double-acting (DA) uses air for both strokes and stays in its last position if air is lost. Spring-return (SR) uses springs for the return stroke, so on air loss the springs drive the valve to a preset open or closed position.
Can I add a solenoid valve or limit switch? Yes. The actuator accepts a solenoid valve for control, a limit switch box for position feedback, and a positioner for modulating service — tell us your control setup when you request a quote.
Is it full port? Yes — the bore is unrestricted through the valve, keeping conductance high on vacuum lines.
What is the minimum order? No minimum order quantity — we accept orders of any size, including small trial orders. For small orders, freight is arranged and paid by the buyer. Payment is by T/T — 30% on order confirmation, 70% before shipment.
What is the operating temperature? -20 °C to +180 °C, set by the PTFE seats. Body and ball are 316 stainless steel.
Sample Policy
We are happy to provide product samples for customers to evaluate quality or conduct testing. The process typically begins with a quotation based on the customer’s specifications.
If the pricing is acceptable, we can offer samples either free of charge or at a cost depending on the product type and availability.
Shipping fees are borne by the customer.
Order Process
After confirming the product requirements and other details with the customer, we will issue a Sales Confirmation for approval. Once confirmed, the customer is required to pay a 30% deposit to proceed with production.
When mass production is completed and the goods pass inspection, the customer must pay the remaining 70% balance before shipment is arranged.
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FAQ
A. How can I request a quote?
Please provide a detailed inquiry sheet including product specifications, materials, quantities, and any special requirements. We will offer a quotation based on your request.
B. What are your quotation terms?
Our quotations are typically based on FOB terms. However, we can also offer CFR, CIF, or other Incoterms upon request.
C. What is your Minimum Order Quantity (MOQ)?
We have no MOQ. We operate on a made-to-order basis and accept orders of any size — trial orders are welcome. For smaller orders, freight is arranged and borne by the buyer.
D. What are your payment terms?
By T/T – 30% down payment upon order confirmation, and 70% balance before shipment.
E. What is your lead time?
Lead time depends on order quantity and specifications. We will confirm the exact schedule when you request a quote.
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