Trunnion Mounted Ball Valve
Technical specifications
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Nominal diameter DN 15 to 200 mm
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Type of connection flanged / welded
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Nominal pressure PN 1,6 to 42 MPa
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Operating temperature - 196 to 400 °C
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Material of the body carbon steel / cold-resistant steel / heat-resistant steel / stainless steel / corrosion-resistant alloys
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Actuator pneumatic, piston / electric / manual
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Type of bore full-bore / reduced bore
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Type of construction trunnion mounted ball
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Seat type soft seal / metal-to metal seal
Execution options
Cryogenic design
The design is adapted for operation at temperatures up to -196 °C and below. The extended bonnet and special materials prevent the seals from freezing and ensure reliable tightness during cryogenic temperature changes.
Fireproof design according to API 607
The valve complies with API 607 requirements, which ensures that it remains tight when exposed to an open flame. After the soft seals burn out, the metal sealing remains in place, ensuring the protection of equipment and personnel in emergency situations.
For hydrogen sulfide service
In accordance with the requirements of the NACE MR 0103/01-75 standard for media containing hydrogen sulfide.
Drain plug
It allows to drain the remains of the working medium from the valve cavity during maintenance or conservation, simplifying the preparation for repairs and increasing safety.
Body cavity relief plug
It provides a controlled reduction of excess pressure that occurs when the medium inside the ball valve is heated or expanded, preventing emergency loads on the body and seats.
With lubricant injection
Injection of the lubricant to the seat area; to the packing area.
Special design of seats (DPE)
The seats operate in a double-compression mode, ensuring tightness both on the pressure side and on the valve cavity side. Increases safety and guarantees zero leakage in high-pressure systems.
V-Ring packing
It provides automatic wear compensation and stable tightness of the shaft assembly, especially at fluctuating pressures and temperatures.
Top entry construction
It allows maintenance and replacement of internal parts without removing the ball valve from the pipeline, reducing downtime and maintenance costs.
One piece construction
The body is made without detachable connections, which eliminates external leaks, increases reliability and is suitable for underground installation and main pipelines.
Features
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CoatingBall/seat coating: tungsten carbide, stellite, chromium nitride, chromium carbide
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Self-relieving seatsThe seats automatically compensate for the pressure of the medium, reducing the load on the ball or plug.