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SS321 Trunnion Ball Valve With Vacuum Testing

The SS321 Trunnion Ball Valve with Vacuum Testing is a high-precision flow control solution designed for extreme environments where both high-temperature stability and superior leak tightness are critical.

Model:
Q447F-150LBN0625
Brand:
DIDTEK
Code:
TRBV-FTBV-049

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SS321 Ball Valve Vacuum Tested Ball Valve F321 Trunnion Valve Helium Leak Test Valve High Temp Stainless Ball Valve

Product Description

Product Parameters

Parameters

Application

Product Detail

The SS321 Trunnion Ball Valve with Vacuum Testing is a high-precision flow control solution designed for extreme environments where both high-temperature stability and superior leak tightness are critical. Constructed from ASTM A182 F321 (Forged) or A351 CF8C (Cast), this stabilized stainless steel prevents intergranular corrosion in the chromium carbide precipitation range. To meet the stringent requirements of vacuum service or high-purity applications, these valves undergo rigorous Vacuum Leak Testing (often using Helium Mass Spectrometry), ensuring the integrity of the stem seals, body joints, and seat interfaces against atmospheric ingress.

Product Parameters

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 some corrosive liquid

Design Description

High-Temperature Stability (SS321): The addition of Titanium ensures the valve maintains its mechanical properties and corrosion resistance at elevated temperatures where standard 304 or 316 might fail.
Vacuum Integrity Assurance: Specialized vacuum testing validates that the valve can maintain a vacuum level (typically down to $10^{-6} \text{ mbar}\cdot\text{l/s}$ or better), preventing any air or contaminant from leaking into the process.
Low-Friction Trunnion Design: The trunnion-mounted ball reduces torque and wear on the specialized vacuum-grade seats, ensuring smooth operation even after long periods of inactivity.
High-Performance Sealing: Often equipped with customized O-rings or lip seals (like Viton, Kalrez, or PTFE) specifically cleaned and degreased for vacuum or high-purity service.

Parameters

Brand	DIDTEK
Structure	Trunnion Ball
Material	SS
Type	Forged Ball Valve
Test	100% quantity tested before delivery
Guarantee	18 months after shipments and 12 months after installed
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

Application & Function

SS321 Trunnion Ball Valve With Vacuum Testing are widely utilized in demanding environments due to their superior material properties:

Aerospace & Defense: Fuel and oxidizer systems for rocket engine testing and ground support.
Semiconductor & Electronics: High-vacuum deposition and chemical vapor deposition (CVD) tools.
Nuclear Industry: Handling radioactive gases or fluids where zero leakage to the atmosphere is mandatory.
Specialty Chemicals: Processes requiring high-temperature resistance and protection against oxygen contamination.