Actuated ball valve · Metal seated · American standard
Pneumatic Metal-Seated Ball Valve — API 608, Class 300, NPS ½″ to 8″
Flanged ball valve with hard-faced metal seats and a pneumatic actuator on an ISO 5211 low mounting pad. Built to API 608 for hot and abrasive service up to +420 °C.
- Ball and seats hard-faced (hard chrome, Ni60 / Ni55, WC or Stellite)
- Shell 7.5 MPa, seat 5.5 MPa test on every valve
- Standard sizes ship in 15–20 days
An engineer replies within 24 hours. Send size, pressure, body material, actuator type and quantity.
Specifications
Technical Data
| Pneumatic metal-seated ball valve | |
|---|---|
| Size | NPS ½″–8″ |
| Pressure class | ASME Class 300 |
| Body / bonnet | A216 WCB · A351 CF8 · A351 CF3M |
| Seat type | Metal-to-metal, hard-faced |
| Working temperature | −29 °C to +420 °C |
| Media | Water, oil, gas |
| Actuator mounting | ISO 5211 pad, F04 to F16 by size |
| Standards | Design API 608 · face-to-face ASME B16.10 · flanges ASME B16.5 · test API 598 |
Application
Where It Is Used
Automated lines where soft seats would burn or wear out.
- Hot oil and steam
- Abrasive and particle-laden media
- Refinery and petrochemical units
- Power plants
ASSEMBLY HALL · WENZHOUConstruction
Parts & Materials
From our Q41Y-300LB general assembly drawing.
| Part | CF8 version | CF3M version | WCB version |
|---|---|---|---|
| Body / bonnet | A351 CF8 | A351 CF3M | A216 WCB |
| Ball | F304 + Ni60 / WC / STL | F316L + Ni60 / WC / STL | F304 + Ni60 / WC / STL |
| Seat | F304 + Ni55 / WC / STL | F316L + Ni55 / WC / STL | F304 + Ni55 / WC / STL |
| Stem | A182 F304 | A182 F316L | 17-4PH |
| Disc springs | 17-7PH | 17-7PH | 17-7PH |
| Body gasket | Spiral wound SS304 + graphite | Spiral wound SS316L + graphite | Spiral wound SS304 + graphite |
| Seal ring / packing | Flexible graphite | Flexible graphite | Flexible graphite |
| Gland | A351 CF8 | A351 CF3M | A351 CF8 |
| Bolts / nuts | A193 B8 / A194 8 | A193 B8 / A194 8 | A193 B7 / A194 2H |
| Bracket / bushing | A29 1025 | A29 1025 | A29 1025 |
Dimensions
Dimensions (mm), Class 300
L = face-to-face · D = flange O.D. · D1 = bolt circle · D2 = raised face O.D. · T = flange thickness · f = raised face height · Stem F×F = square drive · H = height without actuator.
Class 300, NPS ½″–8″
| NPS | L | D | D1 | D2 | T | f | n-Ød | Stem F×F | ISO 5211 | H |
|---|---|---|---|---|---|---|---|---|---|---|
| ½″ | 140 | 95 | 66.7 | 35.1 | 14.7 | 2 | 4-Ø16 | 9×9 | F04/F05 | 82.5 |
| ¾″ | 152 | 115 | 82.6 | 42.9 | 16.3 | 2 | 4-Ø18 | 9×9 | F04/F05 | 83.5 |
| 1″ | 165 | 125 | 88.9 | 50.8 | 17.9 | 2 | 4-Ø18 | 11×11 | F05/F07 | 97 |
| 1¼″ | 178 | 135 | 98.4 | 63.5 | 19.5 | 2 | 4-Ø18 | 11×11 | F05/F07 | 103 |
| 1½″ | 190 | 155 | 114.3 | 73.2 | 21.1 | 2 | 4-Ø22 | 14×14 | F07/F10 | 118 |
| 2″ | 216 | 165 | 127 | 91.9 | 22.7 | 2 | 8-Ø18 | 14×14 | F07/F10 | 123 |
| 2½″ | 241 | 190 | 149.2 | 105 | 25.9 | 2 | 8-Ø22 | 17×17 | F10/F12 | 156 |
| 3″ | 282 | 210 | 168.3 | 127 | 29 | 2 | 8-Ø22 | 17×17 | F10/F12 | 163 |
| 4″ | 305 | 255 | 200 | 157 | 32.2 | 2 | 8-Ø22 | 19×19 | F12/F14 | 182.5 |
| 5″ | 381 | 280 | 235 | 186 | 35.4 | 2 | 8-Ø22 | 22×22 | F12/F14 | 222 |
| 6″ | 403 | 320 | 269.9 | 216 | 37 | 2 | 12-Ø22 | 27×27 | F14/F16 | 251.5 |
| 8″ | 502 | 380 | 330.2 | 270 | 41.7 | 2 | 12-Ø26 | 27×27 | F14/F16 | 308.5 |
Testing
Pressure Test on Every Valve
| Test | Pressure |
|---|---|
| Shell test (water) | 7.5 MPa |
| Seat test (water) | 5.5 MPa |
| Air seat test | 0.6 MPa |
Class 300 test pressures from our drawing, per API 598. Actual results for each valve are on the test report.
SHELL & SEAT TEST
ACTUATED VALVESQuality records
A Test Report in Every Shipment
- Heat number of the body casting
- Materials of body, ball and stem
- Shell and seat test pressures
- Open/close check of the assembly
- Signed and stamped by our QC department
We welcome third-party inspection (e.g. SGS or BV), arranged and paid for by the buyer; inspectors get full access to our plant and test bench.
Download Sample Test Report (PDF)Options
Actuators & Accessories
- Solenoid valve
- Limit switch box with open/close indication
- Air filter regulator
- Valve positioner for flow regulation
- Manual override
Accessories are fitted to order. Tell us the control signal, voltage and air supply and we confirm the package with your quote.
Send us these 7 details for a fast quote
- Valve type and size
- Pressure class
- Body material
- Air supply pressure and control signal
- Accessories (solenoid, limit switch, positioner)
- Media and temperature
- Quantity and destination port
Made by BAUTU
From Casting to Actuated Assembly
01 CASTING
02 MACHINING
03 ACTUATOR FITTING
04 PRESSURE TEST
ACTUATED VALVES · WENZHOUSee your valves before they ship
Book a live video call and we show your assemblies opening and closing on our bench before packing.
Book a Video TourFAQ
Frequently Asked Questions
Metal seat or soft seat?
Soft (PTFE) seats seal tightly but are limited to about +180 °C and wear on abrasive media. Hard-faced metal seats handle temperatures up to +420 °C and particles in the flow.
Which hard-facing is used?
Ball and seats are overlaid with nickel-based alloy (Ni60 / Ni55), tungsten carbide (WC) or Stellite (STL). We choose the overlay by temperature and media; tell us your service conditions.
Can I fit my own actuator?
Yes. The valve has an ISO 5211 mounting pad (F04/F05 for ½″ up to F14/F16 for 6″ and 8″) and a square stem drive. Tell us the actuator model and we check the fit.
How do I install an actuated ball valve?
Before installation, run a seat leak test and a few open/close cycles without load: the valve must move smoothly with no sticking. Clean the bore, sealing faces and pipe flanges, and tighten the connection bolts evenly. The valve can be installed in any position; leave room for maintenance and manual operation.
Is the valve API certified?
It is designed and built to API 608 and ASME B16.34, and every valve is pressure-tested per API 598. We do not hold an API Monogram licence. API 607 fire-type testing and ISO 9001 are in application. Every order ships with a Product Test Report (heat number, chemistry, mechanical properties and API 598 test results). Third-party inspection (e.g. SGS or BV) is welcome, arranged by the buyer.
What documents ship with the valve?
A product test report with the heat number of the body casting, materials and the pressure test results. We welcome third-party inspection (e.g. SGS or BV), arranged and paid for by the buyer.
What is the lead time?
Standard sizes ship in 15–20 days. Special actuators, voltages or accessories may take longer; we confirm the date with your quote.
Buyer's guide
API 608 Ball Valves: What the Standard Covers and How to Specify OneSizes and pressure classes under API 608, API 608 vs API 6D, and an 8-point checklist for your enquiry.Read the guide →
Soft-Seated vs Metal-Seated Ball Valves: How to ChoosePTFE to +150 °C, RPTFE to +180 °C, metal seats to +420 °C — when a metal seat is worth the extra torque and cost.Read the guide →Related
Other Actuated Ball Valves
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