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Q447F-150LBN0625
DIDTEK
TRBV-FTBV-049
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The SS321 Trunnion Ball Valve with Vacuum Testing is developed for process systems where high-temperature stability, corrosion resistance and stringent leak-tightness verification are required.
The product page specifies ASTM A182 F321 stainless steel for the current configuration. SS321 is titanium-stabilized and is commonly selected where resistance to intergranular corrosion and elevated-temperature service are important.
For vacuum or high-purity applications, the valve is subjected to vacuum leak testing using helium mass spectrometry. The page identifies a target leakage level of 10-6 mbar·l/s or better, while internal components are cleaned and degreased to reduce contamination before service.
The trunnion-mounted structure supports the ball under line pressure, helping reduce seat loading and operating torque. The listed configuration combines F321 material, PEEK soft seats, PN16 pressure rating and worm-gear operation.
Parameter Name | Parameter |
Size Range | DN350 |
Pressure Range | PN16 |
Material | F321 |
Seal | Soft Seat: PEEK |
Temperature Range | -26°C ~ 200°C |
Design According | API 6D |
Face to Face | ASME B16.10 |
End Flanges | GOST 33259 |
End Connection Type | RF |
Fire Safety | API 6FA |
Inspection and Test | API 598 |
Operate | Worm Gear |
Body Type | Split Body |
Type of Valve | Trunnion Ball Valve |
Suitable Medium | Water, Steam, Oil and compatible corrosive liquids |
SS321 High-Temperature Stability: Titanium-stabilized F321 stainless steel supports corrosion resistance and mechanical stability in elevated-temperature service.
Vacuum Leak Testing: Helium mass spectrometry is used to evaluate leakage at body joints, stem seals and seat interfaces for vacuum-sensitive applications.
Clean Internal Surfaces: Ultrasonic cleaning and degreasing help reduce oil, particles and other contaminants before vacuum or high-purity service.
Trunnion-Mounted Ball: The mechanically supported ball reduces direct seat loading and helps maintain predictable worm-gear operation.
Brand | DIDTEK |
Structure | Trunnion Ball |
Material | Stainless Steel |
Type | Forged Ball Valve |
Test | 100% quantity tested before delivery |
Guarantee | 18 months after shipment and 12 months after installation |
Delivery | 15 - 60 days |
Sample | Sample available by Didtek Valve |
Color | Customer request |
Packing | Plywood Case |
MOQ | 1 Set |
Certificate | API6D, CE, UKCA, ISO9001, TS, EAC, ISO15848, TA-LUFT, API607, API6FA, etc. |
Place of Origin | Zhejiang, China (Mainland) |
Delivery Detail | Shipped in 15-30 days after payment |
Port | Shanghai or Ningbo |
Payment Terms | L/C, D/A, D/P, T/T, Western Union |
The SS321 Vacuum-Tested Trunnion Ball Valve is intended for applications where valve cleanliness, high-temperature material stability and verified sealing performance are important selection factors.
Vacuum & High-Purity Systems: Helium leak testing and cleaned internal surfaces support process lines where atmospheric ingress and contamination must be tightly controlled.
Semiconductor Process Equipment: Can be considered for compatible high-vacuum or process-gas isolation duties subject to project cleanliness and material requirements.
Aerospace Test Systems: Suitable for selected fuel, gas and thermal-process isolation duties where F321 material and verified leakage performance are required.
Special Process Industries: Applicable to compatible chemical, energy and research systems operating within the listed pressure and temperature limits.
