Bolted Bonnet Cast Gate Valve Through Conduit Double Expanding Feature

Through conduit double expanding cast gate valve, flexible wedge, bolted bonnet

KELITE Through Conduit Double Expanding Gate Valves are manufactured with a full bore port and with 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 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 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

KELITE Through Conduit 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

KELITE Through Conduit Double Expanding Gate valves are manufacturedusing a wide range of materials, from carbon steel to alloys, in order to complywith all the possible ser vices (Hydrocarbons, Mildly to Highly Corrosive, NACE,etcetera) and applications.ns, Mildly to Highly Corrosive, NACE, etcetera) andapplications.

MAIN APPLICATIONS

•Offshore/Onshore applications
•Double block and bleed applications
•Sub-sea applications
•Scrapers/Pig Traps/Pig Launchers and Receivers
•Oil and gas production/transpor tation isolation
•Upstream gas compressor isolation
•Critical and Primar y isolation

Design features

•Positive Sealing (Capability of improving seal tightness by increasing the stem thrust)
•Through Conduit – Negligible Pressure Drop
•Double Block and Bleed per formances
•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 sur face(metal/non-sliding seats)
•Par ticularly indicated for Pig Traps isolation
•Extremely wide range of operatingpressure 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 secondar y injection fitting and stempacking release valve (optional features).

Fire-safe design
KELITE Through Conduit Expanding Gate valve isavailable in the API 6FA fire-tested design. Fire-testshave been witnessed and cer tified by independentauthorities. KELITE Fire tested gate valves offer thehighest resistance against fire. The body seal is aspiral wound gasket or Ring Joint / BX depending onthe valve ser vice and rating, and the stem seal is adie/formed /braided graphite packing.Fire-tests cer tification is available and can be providedupon request.

Double block & bleed
Double block and bleed capability is a standard featureof KELITE Through Conduit Expanding Gate Valves.With the valve fully closed and pressure on both sides,it is possible to bleed the pressure from the bodycavity to check seat seal integrity.

Double isolation
This feature is obtained since the valve sealing isgranted not only by the line pressure but also by theexternal force used to close the valve ( i.e. positivesealing)

Fully piggable
KELITE Through Conduit Expanding Gate aredesigned to be Fully Piggable. Pigs and scrapers canbe run through the valve without any damage to theinternal structure of the valve.

Easy maintenace
KELITE Through Conduit Expanding Gate valvedesign minimizes and eases the maintenance allowingfor the ser vice operations to be done without theremoval of the valve from the line.

Kelite Valve is a leading manufacturer of quality valve products including cast steel, and forged steel Ball, Gate, Globe, Check, Butterfly and Plug valves. Our diverse product line is utilized in virtually all industries including Power, Chemical, Petrochemical, Oil and Gas,Pulp and Paper.

Designed and engineered to the highest possible standards, our valve range is found in a substantial array of applications in almost all industries; from Petrochemical, Oil and Gas, Chemical, to power generation, Pulp and Paper.

Accredited worldwide by respected companies for over two decades, your valve requirements translates into our commitment of offering a quality product line at competitive prices. Kelite Group and its experienced team will meet, and exceed your expectations.

"Constantly pursue and innovate" is the spirit of the Kelite Group, “AlI consideration for the customers" is the marketing purpose of Kelite Group, We would like to provide more and more products with better quality and service, so as to meet the different requirements of our customers. We hope that more and more customers choose to use our products. Look forward to cooperating with your esteemed company in the near future.