Fully Welded Ball Valve
Pressure Range：Class 150∽Class 1500
Material：Carbon steel,Stainless steel,Alloy steel,special material,chromium molybdenum steel,etc.
Medium：Water Steam Oil
Operation: Manual Gear Pneumatic Electric
Design & Manufacturer,API 608/API 6D/BS5351
Face to face, ASME B16.10,API6D
End flanges, ASME B16.5
Welded ends, ASME B16.25
Test and Inspection,API 598/API6D
High precision ball & High tightness seat
Long life ball & Seat
The most economical material combination
The best fire safe and static resistance safety
Various driving types
Steel fully welded body
Blow-out proof stem
Fire safe design
Free leakage of body sealed construction
Low torque in operation
Automatic body cavity relief
Trunnion Ball Valve
GB/T 12237 /B/T 19672
API 608 /API 6D
Face To Face
GB/T 12221/ GB/T 19672
ASME B 16.10 / API 6D
ASME B 16.5/MSS SP-44/ASME B 16.47
Test & Inspection
JB/T 9092 GB/T19672
PS: We also can do according to customer's requirements.
1. Urgent Grease Injection Device: Trunnion ball valve(DN≥150) aims to prevent the medium leakage of the seal ring and stem.
2. Blow-out proof stem: Prevent the stem blowing out caused by the abnormal increase of pressure.
3. Fire-proof Design: When the fire disaster occurs, and the non-metallic seat and sealing parts are damaged
under high temperature, our unique design of metal to metal auxiliary seal structure has an deep effect to
prevent the leakage of the media.
4. Anti-static Design: DBV trunnion ball valve design forms a electrostatic channel through ball, stem and body. This structure leads the electrostatic spark to the earth caused by the friction between the ball and the seat. This structure could avoid the fire disaster and explosive accident.
5. Standard Single Piston Action（Self-relieving Seat）: The fluid pressure, both upstream and downstream creates a resultant thrust that pushes the seat rings closed to the ball. The fluid pressure acting in the body cavity creates a resultant thrust that pushes the seat rings away from the ball. The single piston design permits the automatic release of any over pressure in the body cavity when the valve is in the fully open or fully closed position, therefore the seat rings are "self-relieving".
Optional Double Piston Action: The fluid pressure acting in the body cavity, both upstream and downstream creates a resultant thrust that pushes the seat rings closed to the ball. The seat rings of the valve with double piston action require a relief valve in order to reduce the over pressure in the body cavity.
6. Actuator Installation Yoke: This structure facilitates to install the actuators, such as pneumatic, electric, ,hydraulic and pneumatic&hydraulic, etc.
Material for Main Parts
WCB, CF8, CF8M, LCB, LCC, A105, F304/L, F316/L, LF2, etc
25+ENP, A105+ENP, 304, 316, LF2+ENP, etc.
17-4PH,304,316, 1Cr13, 2Cr13, 410,420,LF2 etc.
PTFE, RPTFE, DEVLON, PEEK, 304+ni55, 316+ni55, LF2+NI55, 304+STL,316+STL
1. Factory Overview
2. Quality Control
3. Storage and Warehouse
4. Package and Delivery
5. Honor and Certificate
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