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Supplier Homepage > Products > API Standard Fire Safe Design 3 Piece 6 Inch Forged Steel Trunnion Mounted Ball Valve
API Standard Fire Safe Design 3 Piece 6 Inch Forged Steel Trunnion Mounted Ball Valve
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last update: 2017-12-26 09:40
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API Standard Fire Safe Design 3 Piece 6 Inch Forged Steel Trunnion Mounted Ball Valve

The trunnion ball valve is used to cut off or connect the media in various pipelines of Class150-Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, oxidizer, urea and etc. The driving modes include manual operation, worm and worm gear transmission, pneumatic operation and electric operation. The connection ends can be flange or butt welding.


STANDARDS: 


1. DESIGN AND MANUFACTURE

BS 5351/API 608/API 6D/ASME B16.34

2. FACE TO FACE DIMENSIONS

ASME B16.10/API 6D

3. FLANGE ENDS DIMENSIONS

NPS1/2”-24”

ASME B16.5

4. NPS 26”& ABOVE

ASME B16.47

5. BW ENDS DIMENSIONS

ASME B16.25

6. PRESSURE-TEMPERATURE RATINGS

ASME B16.34

7. FIRE SAFE DESIGN

API 607/API 6FA

8. NORMAL PRESSURE

CLASS 150~2500

9. NORMAL DIAMETER

NPS 2″~48″



DESIGN FEATURES:

1. FULL PORT DESIGN/REDUCED PORT DESIGN

2. 2 PIECE/3PIECE BOLTED BODY

3. TRUNNION MOUNTED BALL TYPE

4. DOUBLE BLOCK AND BLEED(DBB)

5. SECONDARY/EMERGENCY SEALING

6. AUTOMATIC BODY CAVITY&RELIEF

7. BLOW-OUT PROOF STEM

8. FIRE SAFE DESIGN

9. ANTI-STATIC DEVICE

10. ISO 5211 DIRECT MOUNTED TYPR

11. WITH LOCKING DEVICE

Fireproof Structure Design

In case of fire during the use of valve, the seat ring, stem O ring and middle flange O ring made of PTFE, rubber or other non-metal materials will be decomposed or damaged under high temperature. Under pressure of the medium, the ball valve will push the seat retainer rapidly towards the ball to make the metal seal ring contact the ball and form the auxiliary metal to meta sealing structure, which can effectively control valve leakage.The fireproof structure design of trunnnion pipeline ball valve conforms to requirements in API 607, API 6FA, BS 6755 and other standards.



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