Pneumatic Three-Way Control Valve

NSV Pneumatic Three-Way Control Valve

This pneumatic three-way control valve is engineered for precise flow modulation in mixing or diverting service. Featuring a T-body design, stainless steel construction, and a pneumatic actuator with digital positioner, it delivers stable, responsive control in demanding industrial processes.

Key Features

Body Material CF8, CF8M, CF3, CF3M, or other ASTM A351/A216 cast alloys

Operation Pneumatic actuation with digital positioner

Pressure Rating Class 150 (PN16)

Size Range DN50 to DN300

Valve Type T-body three-way, equal percentage trim

Sealing Soft-seated or metal-seated options available

Design Standard API 607

Operation & Advantages

The valve operates via a 4–20 mA signal that drives the diaphragm actuator to position the plug precisely within the T-shaped body. This enables accurate blending of two inlet streams or diversion of one inlet to two outlets. The equal-percentage flow characteristic ensures consistent gain across the control range. Stainless steel construction provides strong resistance to corrosion, while the metal-seated option supports elevated temperature applications. Low hysteresis and high repeatability make it ideal for continuous modulating duty.

Typical Applications

Commonly deployed in HVAC systems for chilled/hot water mixing, chemical processing for reactor temperature control, boiler feedwater regulation, and pharmaceutical or food-grade processes requiring sanitary, precise flow splitting or combining.

Quality Control & Service

Manufactured per ASME B16.34 and tested in compliance with API 607. Every valve undergoes shell test at 1.5× rated pressure and seat leakage test to Class IV or better. Full documentation—including material test reports, calibration certificates, and assembly drawings is supplied. Technical support covers selection, installation, and commissioning.

FAQ

1.Q: What’s the brand of your company can supply ?

A:NSV or OEM service.

2.Q:I want to know how to contact the person in charge.

A: When you call representative call number of company(86-577-67378616), sales team will receive your call if there is no special situation. If you let us know your inquiry, we will put you through to the person in charge. If you need a personal phone number, you have to receive it from the person in charge directly after phone call.

3. 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.

4. Q:How can I get your company catalog?

A: For your reference, basic catalogue is same as "Download>E-Catalog” of homepage. If you need printed material or request more specific data like PQ material, please contact sales team.