Pneumatic Carbon Steel Flanged Ball Valve

WCB CARBON STEEL · NOOKIN SOLENOID · 0.15 MPa MIN · DN25–DN300

The Q647F-16C-SOL is a fully integrated pneumatic carbon steel
ball valve assembly incorporating a factory-installed NOOKIN
4M310-08 solenoid valve for direct electrical control. Carbon
steel WCB (ASTM A216 Gr.WCB) construction offers superior
mechanical strength and excellent value for non-corrosive to
mildly corrosive media including water, steam, compressed air,
oil, and natural gas, at significantly lower cost than stainless
steel alternatives.

Q647F-16C-SOL · ISO 5211 · PN16 / Class 150
Mounting StandardISO 5211
Pressure RatingPN16 / Class 150
Nominal SizeDN25 – DN200 (1" – 12")
Body MaterialWCB Carbon Steel (ASTM A216 Gr.WCB)
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— Full Specifications

Pneumatic Carbon Steel Flanged Ball Valve - Parameter Table

PARAMETERSPECIFICATION
Mounting StandardISO 5211
Pressure RatingPN16 / Class 150
Nominal Size (DN)DN25 – DN300 (1" – 12")
Body MaterialWCB Carbon Steel (ASTM A216 Gr.WCB)
Body CoatingBlack epoxy anti-corrosion coating
Solenoid ValveNOOKIN 4M310-08, 5/2-way, DC 24V / 4W / IP65 / CE
Min. Air Pressure0.15 MPa (vs standard 0.4 MPa)
Working Temperatureup to +230 °C (PTFE seat)

Our Production Process

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1. Casting

2. Machining

3. Testing

4. Loading

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— WHY bAUTU

Why Specify This Valve from Bautu

Five Pre-Matched Components, Low Pressure Capable

The assembly integrates five purpose-matched components: a 2-piece full-bore WCB carbon steel flanged ball valve with black epoxy anti-corrosion coating; a silver-grey anodised aluminium rack-and-pinion pneumatic actuator (DA or SR); a transparent dome-top limit switch indicator; a NOOKIN 4M310-08 5/2-way solenoid valve (DC 24V / 4W / IP65 / CE) with a notably low 0.15 MPa minimum working pressure; and an inline filter-regulator with pressure gauge.

Operates on Low-Pressure Air Systems

The NOOKIN 4M310-08 solenoid's lower minimum pressure threshold (0.15 MPa vs the standard 0.4 MPa) means this assembly can operate reliably on low-pressure compressed air systems, making it suitable for small factory environments or systems with limited air-supply capacity. All components are factory-assembled, air-piped, and pressure-tested prior to shipment.

— FAQ

Frequently Asked Questions

What is a pneumatic carbon steel flanged ball valve, and how does it work?

A pneumatic carbon steel flanged ball valve combines a WCB carbon steel body with a compressed-air actuator that rotates the valve ball 90° to open or close the flow path automatically. Carbon steel (ASTM A216 WCB) provides excellent mechanical strength and pressure resistance, rated for service from -29°C to +425°C, making it the standard body material for oil, gas, steam, and general industrial pipelines. The pneumatic actuator eliminates manual operation, enabling remote control, automated sequencing, and high-cycle switching in process systems. Available in double-acting (air-to-open, air-to-close) and spring-return fail-safe configurations.

When should I choose carbon steel over stainless steel for a pneumatic ball valve?

Carbon steel (WCB) is the preferred choice when the pipeline media is non-corrosive or mildly corrosive — such as natural gas, steam, crude oil, refined petroleum products, compressed air, and general process fluids. It offers significantly lower cost than stainless steel while delivering equal or superior pressure ratings, making it the default specification in oil and gas, petrochemical, power generation, and heavy industrial projects. Choose stainless steel instead when the media is corrosive (acids, chlorides, seawater), when hygiene standards apply (food, pharma), or when contamination of the product must be avoided. For most general industrial and energy sector applications, carbon steel WCB is the most cost-effective and technically appropriate choice.

What is the standard lead time, and what custom actuator options are available?

Standard pneumatic carbon steel flanged ball valves are delivered in 3–5 weeks from order confirmation, including actuator assembly and factory function testing. Bautu supports fully customized packages including solenoid valves (24VDC, 110VAC, 220VAC), limit switch boxes for open/close position feedback, positioners for modulating control, and ATEX/IECEx explosion-proof components for hazardous area Zone 1 / Zone 2 installations. Fire-safe design (API 607) and anti-static devices are available on request. Submit your process conditions, pipe size, and control requirements for a complete valve-actuator package quotation within 24 hours.

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Pneumatic Carbon Steel Flanged Ball Valve · Direct from 50,000m² Factory · Wenzhou, China