3-Way & 4-Way Plug Valve

NSV 3-Way & 4-Way Plug Valve

The NSV 3-way and 4-way plug valve features a cast stainless steel body (304/316) with an internal soft-seated plug, where both plug and seat are lined with PTFE or reinforced PTFE (RPTFE), achieving bi-directional Class VI bubble-tight sealing. 

Compact in design with low operating torque, it supports manual or electric actuation and is suitable for Class 150–300 (PN16–PN40) service. Widely used in chemical, pharmaceutical, food & beverage, water treatment, and instrumentation systems for multi-path fluid switching and isolation.

Key Features

Valve type: 3-Way / 4-Way Plug Valve

Body material: CF8 / CF8M (304 / 316 SS)

Sealing: Soft seal (PTFE / RPTFE)

Actuation: Manual (handwheel) / Electric actuator (optional)

End connection: Flanged (RF / RTJ)

Size range: 2"–12" (DN50–DN300)

Pressure rating: Class 150–300 (PN16–PN40)

Operating temperature: –20°C to 180°C

Core Advantages

Bubble-Tight Sealing: PTFE/RPTFE lining ensures zero leakage, compliant with Class VI standard

Flexible Flow Path Configuration: Supports L-type, T-type, X-type port arrangements for complex process needs

Low Operating Torque: Low friction between plug and seat enables smooth operation and extends actuator life

Excellent Chemical Resistance: PTFE lining resists acids, alkalis, and solvents

Compact Design: Small footprint and lightweight for space-limited installations

Automation Ready: Compatible with intelligent electric actuators for remote control and feedback

Typical Applications

Used in fine chemical feed switching, pharmaceutical blending systems, food & beverage distribution manifolds, ultrapure water circuits, and instrument sampling lines for automated isolation and process routing.

FAQ

1.Q: Do u provide sample,is it free or extra ?

A: Yes, we could offer the sample, due to its value,we can supply free sample that small value and you afford the freight,but also welcome visit our factory to inspect quality.

2.Q:How can I visit your company?

A: We always welcome you to factory. However, your visit intention shall be pure. You can visit factory conveniently by noticing your visit to the department in charge depending on your visit purpose in advance. For the way to factory, please refer to map“About Us” of homepage.

3.Q: Do u provide sample,is it free or extra ?

A: Yes, we could offer the sample, due to its value,we can supply free sample that small value and you afford the freight,but also welcome visit our factory to inspect quality.

4. Q: What’s the valves warranty?

A: Our valves warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first.