3PC Flanged Forged Ball Valve
This 3PC flanged forged ball valve is engineered for tough industrial media. With its trunnion-mounted design and robust body, it minimizes leakage and withstands pressure shocks—making it a trusted choice for chemical processing, energy plants, and fluid control systems.
Valve Size: DN50 – DN600
Pressure Rating: PN16 / PN25 / PN40 / PN64 / PN100 / PN160; 150LB – 1500LB
Body Material: Stainless Steel (F304 / F316 / F316L), Carbon Steel (A105)
Ball Material: Stainless Steel
Seat Material: PTFE / RPTFE / PEEK
Connection: RF / RTJ
Operating Temperature: -29°C to 121°C
Applicable Media: Nitric acid, acetic acid, water, oil, steam
Product Technical Specifications
Model No.: Q347F
Design Standards: GB/T 12224, ASME B16.34, API 6D
Flange Connection Standards: JB/T 79.1, ASME B16.5
Face-to-Face Dimensions: GB/T 12221, ASME B16.10
Pressure Test Standards: GB/T 13927, API 598
Product Dimensions and Structure

| ITEM | Ports Name | Material |
|---|---|---|
| 1 | Bolt | ASTM A193 B7 |
| 2 | Nut | ASTM A194 2H |
| 3 | Body cap | ASTM A105 |
| 4 | Body | ASTM A105 |
| 5 | Lower stem | ASTM A82 F316 |
| 6 | O-Rinng | Viton |
| 7 | Drain plug | CS+HZn |
| 8 | Gasket | GRAPHITE+SS |
| 9 | Bolt | ASTM A193 B7 |
| 10 | Nut | ASTM A194 2H |
| 11 | Ball | ASTM A82 F316 |
| 12 | Stand | A36 |
| 13 | Seatring | RPTFE |
| 14 | Seat retainer | ASTM A105+ENP |
| 15 | O-ring | Viton |
| 16 | Spring | INCNEI X-750 |
| 17 | Pressure relief plug | CS+HZn |
| 18 | Check valve | CS+HZn |
| 19 | Grease injection valve | CS+HZn |
| 20 | Self lubricating bearing | CS+PTFE |
| 21 | Stem | ASTM A182 F316 |
| 22 | Spring | SS304 |
| 23 | Grease injection valve | CS+Zn |
| 24 | Packing | GRAPHITE+SS |
| 25 | O-Rinng | Viton |
| 26 | Inner hexagonal bolt | ASTM A193 B7 |
| 27 | Couplling plate | A105+ZN |
| 28 | Key | AISI 1045 |
| 29 | Gasket | GRAPHITE+SS |
| 30 | Worm | ASTM A216 WCB |
| 31 | Bolt | ASTM A193 B7 |
| 32 | Nut | ASTM A194 2H |
| 33 | Sealing cover | ASTM A105+ENP |
| 34 | Lifting lug | A36 |
Performance Parameters
| ITEM | Nominal Diameter | Main Dimension (mm) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inches | mm | d | O | W | K | P | B | E | F | L | n-Φd | H | |
| 10 | 8" | 200 | 201 | 470 | 393.7 | 308 | 269.88 | 63.5 | 7.92 | 11.91 | 740 | 12-Φ38 | 275 |
Looking for reliable valves without the long lead times?
- YKY helps you cut costs and speed up projects with fully certified, customizable valves—backed by expert support and fast delivery to 30+ countries.
- Start with your specs—we’ll handle design, testing, and delivery.
CONTACT US
Share your specs, flow media, and system type—
we’ll match a valve that fits.


