Through Conduit Double Expanding Gate Valve, 12 Inch, API 6D
Through Conduit Gate Valve Supplier: Through Conduit Double Expanding Gate Valves, 2 Piece Obturator, 12 Inch, DN300, 600 LB, PN100, API 6D, ASTM A216 WCB.
- Categories
- Gate Valves
- Tags
- Through Conduit Gate Valves , 12 Inch Gate Valve , API 6D Gate Valve
Detail Information
Double Expanding Gate Valve
Name: Through Conduit Double Expanding Gate Valve
Size: 12 Inch, DN300
Pressure: Class 600 LB, PN100
Standard: API 6D
Material: ASTM A216 WCB
Power: Manual, Electric Actuator, Pneumatic Actuator
Temperature: -29 - 540℃
Feature: Full Bore Port, 2 Piece Obturator Designed
VERVO Through Conduit Double Expanding Gate Valves is manufactured with a full bore port and with a 2-piece (gate + segment) obturator designed for a positive, bubble tight shut off upstream and downstream under both low and high differential pressure. Double block and bleed capability and high robustness are standard features 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.
Product Range
Size: NPS 2 Inch-64 Inch
Pressure: Class 150-2500 LB
VERVOS Through Conduit (T.C.)
Slab Gate Valves are available in sizes and pressure ratings as follows:
Class 150# from 2″ through 64″
Class 300# from 2″ through 64″
Class 600# from 2″ through 64″
Class 900# from 2″ through 48″
Class 1500# from 2″ through 42″
Class 2500# from 2″ through 24″
APPLICABLE STANDARDS
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
VERVOS Through Conduit Double Expanding Gate valves are manufactured using a wide range of materials, from carbon steel to alloys, in order to comply with all the possible services (Hydrocarbons, Mildly to Highly Corrosive, NACE, etcetera) and applications.ns, Mildly to Highly Corrosive, NACE, etcetera) and applications.
MAIN APPLICATIONS
Offshore/Onshore applications
Double block and bleed applications
Sub-sea applications
Scrapers/Pig Traps/Pig Launchers and Receivers
Oil and gas production/transportation isolation
Upstream gas compressor isolation
Critical and Primary isolation
Design features
Positive Sealing (Capability of improving seal tightness by increasing the stem thrust)
Through Conduit – Negligible Pressure Drop
Double Block and Bleed performances
Double seal (both up and downstream seats contribute to guarantee tight seal)
Bi-Directional (with preferred flow direction)
Full In-Line maintainability
Suitable for all types of fluids
Superior life of seat sealing surface(metal/non-sliding seats)
Par particularly indicated for Pig Traps isolation
Extremely wide range of operating pressure and temperatures
Extremely robust constructionIntrinsically Fire Safe Construction
MAIN FEATURES
Seats
Seats are Tungsten Carbide HVOF (High-Velocity Oxy-Fuel) coated with Metal to Metal contact between seats and gate. Seat faces protected from emersion The seat faces are outside the flow stream and protected from the erosive action of the flow Stem/stem seal The stem is designed with a threaded T bar allowing relative motions of the gate under line pressure. The stem seal uses graphite seals to insure sealing integrity. Upon request a Chevron packing is available. The stem seal is provided with a lantern ring and may be provided with a second injection fitting and stem packing release valve (optional features).
Fire-safe design
VERVO Through Conduit Expanding Gate valve is available in the API 6FA fire-tested design. Fire tests have has been witnessed and certified by independent authorities. VERVO Fire-tested gate valves offer the highest resistance against fire. The body seal is a spiral wound gasket or Ring Joint / BX depending on the valve service and rating, and the stem seal is adie/formed /braided graphite packing. Fire-test certification is available and can be provided upon request.
Double block & bleed
Double block and bleed capability is a standard feature of VERVO Through Conduit Expanding Gate Valves. With the valve fully closed and pressure on both sides, it is possible to bleed the pressure from the body cavity to check seat seal integrity.
Double isolation
This feature is obtained since the valve sealing is granted not only by the line pressure but also by the external force used to close the valve ( i.e. positive sealing)
Fully pluggable
VERVO Through Conduit Expanding Gate is designed to be fully Piggable. Pigs and scrapers can be run through the valve without any damage to the internal structure of the valve.
Easy maintenance
VERVO Through Conduit Expanding Gate valve design minimizes and eases the maintenance allowing for the service operations to be done without the removal of the valve from the line.
Name: Through Conduit Double Expanding Gate Valve
Size: 12 Inch, DN300
Pressure: Class 600 LB, PN100
Standard: API 6D
Material: ASTM A216 WCB
Power: Manual, Electric Actuator, Pneumatic Actuator
Temperature: -29 - 540℃
Feature: Full Bore Port, 2 Piece Obturator Designed
VERVO Through Conduit Double Expanding Gate Valves is manufactured with a full bore port and with a 2-piece (gate + segment) obturator designed for a positive, bubble tight shut off upstream and downstream under both low and high differential pressure. Double block and bleed capability and high robustness are standard features 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.
Product Range
Size: NPS 2 Inch-64 Inch
Pressure: Class 150-2500 LB
VERVOS Through Conduit (T.C.)
Slab Gate Valves are available in sizes and pressure ratings as follows:
Class 150# from 2″ through 64″
Class 300# from 2″ through 64″
Class 600# from 2″ through 64″
Class 900# from 2″ through 48″
Class 1500# from 2″ through 42″
Class 2500# from 2″ through 24″
APPLICABLE STANDARDS
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
VERVOS Through Conduit Double Expanding Gate valves are manufactured using a wide range of materials, from carbon steel to alloys, in order to comply with all the possible services (Hydrocarbons, Mildly to Highly Corrosive, NACE, etcetera) and applications.ns, Mildly to Highly Corrosive, NACE, etcetera) and applications.
MAIN APPLICATIONS
Offshore/Onshore applications
Double block and bleed applications
Sub-sea applications
Scrapers/Pig Traps/Pig Launchers and Receivers
Oil and gas production/transportation isolation
Upstream gas compressor isolation
Critical and Primary isolation
| Principle of operation The Through Conduit Double Expanding Gate Valve comprises a two-piece wedged shape assembly consisting of a Gate and a Segment. The Gate is attached and driven by the stem and a centralizer helps in retaining the Gate-Segment assembly until sealing through expansion is required. Positive sealing is achieved in both high and low-pressure conditions by expanding the Gate and the Segment out towards the seats while in a closed position. |
|
| Gate in a fully open position In a fully open position, the Segment is incapable of upward movement and the Gate slides upwards along the wedge angle of the Segment, expanding both the Gate and the Segment. The centralizer mechanism allows the Gate-Segmentassembly to expand against the seats and protect the seat faces from the line flow. |
|
| Gate in running position In the running position, the centralizer holds the assembly together, preventing relative movement between the Gate and Segment and holding them in a neutral position until sealing expansion is required. |
|
| Gate in a fully closed position With the Segment incapable of further downward movement, simultaneous upstream and downstream sealing is achieved when the centralizer mechanism allows the Gate Segment to expand, sealing against both seats. |
Design features
Positive Sealing (Capability of improving seal tightness by increasing the stem thrust)
Through Conduit – Negligible Pressure Drop
Double Block and Bleed performances
Double seal (both up and downstream seats contribute to guarantee tight seal)
Bi-Directional (with preferred flow direction)
Full In-Line maintainability
Suitable for all types of fluids
Superior life of seat sealing surface(metal/non-sliding seats)
Par particularly indicated for Pig Traps isolation
Extremely wide range of operating pressure and temperatures
Extremely robust constructionIntrinsically Fire Safe Construction
MAIN FEATURES
Seats
Seats are Tungsten Carbide HVOF (High-Velocity Oxy-Fuel) coated with Metal to Metal contact between seats and gate. Seat faces protected from emersion The seat faces are outside the flow stream and protected from the erosive action of the flow Stem/stem seal The stem is designed with a threaded T bar allowing relative motions of the gate under line pressure. The stem seal uses graphite seals to insure sealing integrity. Upon request a Chevron packing is available. The stem seal is provided with a lantern ring and may be provided with a second injection fitting and stem packing release valve (optional features).
Fire-safe design
VERVO Through Conduit Expanding Gate valve is available in the API 6FA fire-tested design. Fire tests have has been witnessed and certified by independent authorities. VERVO Fire-tested gate valves offer the highest resistance against fire. The body seal is a spiral wound gasket or Ring Joint / BX depending on the valve service and rating, and the stem seal is adie/formed /braided graphite packing. Fire-test certification is available and can be provided upon request.
Double block & bleed
Double block and bleed capability is a standard feature of VERVO Through Conduit Expanding Gate Valves. With the valve fully closed and pressure on both sides, it is possible to bleed the pressure from the body cavity to check seat seal integrity.
Double isolation
This feature is obtained since the valve sealing is granted not only by the line pressure but also by the external force used to close the valve ( i.e. positive sealing)
Fully pluggable
VERVO Through Conduit Expanding Gate is designed to be fully Piggable. Pigs and scrapers can be run through the valve without any damage to the internal structure of the valve.
Easy maintenance
VERVO Through Conduit Expanding Gate valve design minimizes and eases the maintenance allowing for the service operations to be done without the removal of the valve from the line.
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