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API 6D Pipeline Valves
Through Conduit (T.C.) Slab Gate Valves are manufactured with a full bore port, rising stem OS&Y and with floating seats and gate, pressure energized, for a bubble tight shut off upstream and downstream under both low and high differential pressure.
Double block and bleed capability and automatic relief of excess body pressure are a standard feature of this seat design.
The smooth, continuous bore minimizes turbulence within the valve and when in the open position it produces a pressure drop equivalent to a portion of pipe of the same length and diameter.
The seat faces are outside the flow stream and therefore protected from the erosive action of the flow. Pigs and scrapers can be run through the valve without damage.

PRODUCTION RANGE
Through Conduit (T.C.) Slab Gate Valves are available in sizes and pressure ratings as follows:
• Class 150# from 2" through 60" • Class 300# from 2" through 60"
• Class 600# from 2" through 60" • Class 900# from 2" through 48"
• Class 1500# from 2" through 42" • Class 2500# from 2" through 24"

APPLICABLE STANDARDS
Through Conduit (T.C.) Slab Gate valves comply with API 6D / API 6D SS and all relevant international codes:
• ASME B16.34 • ASME B16.25 • ASME B16.47
• Nace MR01.75 • ASME VIII Div.1
VALVE MATERIALS
Through Conduit (T.C.) Slab Gate valves are manufactured using a wide range of materials, from carbon steel to alloys.

"RDP" Type Slab Gate

● Floating Seat
The seat ring is installed with springs, this insures constant contact with the gate insuring a perfect seal.

● Bi-directional
The valve will seal in either direction of down-stream and up-stream.

● Stem Seals
Self energizing non rolling lip seals, no side load or friction drag on the stem low operating thrust.

● Stem protector and position indicator

● API 6 FA Fire safe design
Metal to metal primary seal, secondary to be soft seal.

● Double block and bleed (DBB) Valve with two seating surfaces which in the closed position, blocks flow from both valve ends when the cavity between the seating surfaces is vented through a bleed (drain plug) connection provided on the body cavity.

● Graphite for fire safe sealing for body, bonnet connection

● Self relieving seat design for protection against over pressure in the body cavity


● Body drain relief the trapped fluid in valve cavity


● Emergency sealant injection for both seats and stem packing


● Top entry bonnet design for easy inline valve maintenance and replacement of stem packing


● Special stem packing design protects against dust and easy for tighten packing

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