- Hotline: 091-187-1111
GATE Valves
Fluitek Orsenigo Valves designs and manufactures a full range of Gate Valves built for durability, safety, and precise shut-off performance. All valves are designed in compliance with API 600, API 602, ISO 15761, API 6A, API 6D, and API 6DSS standards, ensuring top quality for the oil, gas, and industrial sectors. Available in bolted or welded bonnet designs, FOV Gate Valves are offered with solid, flexible, or split wedges, and options for parallel slide or expanding gate mechanisms. Manufactured in forged or cast construction, they handle pressures up to Class 4500# / 15000 psi, and sizes ranging from ¼” to 60”. Each unit incorporates fire-safe, anti-blowout stems, bellow seals, and fully guided wedges to minimize seat wear, providing long-lasting, leak-tight performance under high-pressure, high-temperature, and cryogenic conditions. For more information, contact us at 02-168-3193-5, Hotline: 091-187-1111 or Line ID: @multiphase
Bellows Seal Bolted Bonnet
Bellows seal valves are used in applications where a hermetic tightness is essential in order to prevent any possible leakage of process fluid into the atmosphere, where the fluid is particularly hazardous (poisonous, aggressive, radioactive). Fluitek Orsenigo Valves is specialised in gate valves with bellows seals, in particular in the manufacturing of:
- Valves of large diameter (eg. 48”gate) normally for low pressure applications (typically class 300 ANSI)
- Valves of medium-small diameter (eg from 1/2” to 12”) normally for high pressure applications (class 600, 900, 1500, 2500 ANSI).
In both cases the construction of the bellows and its assembly system to other components of the valve are essential, in particular for the resistance of the bellows which is subjected to fluid working pressure on the external side.
Materials used are all grades normally required by the various services: cast or forged carbon steel, low alloy steel, austenitic steel (AISI 316L, AISI 321) or nickel alloys (INCONEL 600, INCONEL 718). Bellows are hydroformed to shape. Bellows materials are usually AISI 316L, INCONEL 625, INCONEL 718). Fluitek Orsenigo Valves bellows seal valves are always supplied with a packing system (stem packing) for safety secondary seal.
Parallel Slide Bolted Bonnet
This type of on-off valve is an alternative to the traditional wedge type gate valves. The disc is in two halves, spring loaded, that seat on parallel seat rings. The disc “slides” in contact with the seats, hence the name. The advantages of this product versus the traditional wedge type product are:
- The disc never blocks in closed position (phenomenon that may occur with a wedge type that is closed with the line in temperature and opened when the line is cold).
- The opening/closing torque is much lower than a corresponding wedge type valve, resulting in less expensive actuation systems.
- The “sliding” feature keeps dirt away from the seating surface.
The double spring loaded disc has the tendency to trap working fluid in the body cavity when the valve is closed. This is avoided, when unidirectional functioning is allowed, by applying an equalizing hole on the upstream part of the disc.
Design codes and overall configuration, including stem-to-disc connection are the same than the wedge type gate valves. Materials range from carbon steel to low alloy steel, to austenitic stainless steel, to nickel alloys.
Materials are either to ASTM/ ASME standards or to EN standards, either harmonized or calculated to design conditions. Pressure classes (per ANSI standard) are normally ranging from 150# to 300# to 600#. Size range depends on pressure class requirements, Fluitek Orsenigo Valves having no limits in relation to market requirements.
Parallel Slide Pressure Seal Bonnet
Fluitek Orsenigo Valves has very extended experience in manufacturing this type of valve. They are an alternative to the traditional flex wedge type gate valves. The disc is in two halves, spring loaded, that seat on parallel seat rings. The disc “slides” in contact with the seats, hence the name. The advantages of this product versus the traditional wedge type product are:
- The disc never blocks in closed position (phenomenon that may occur with a wedge type that has been closed with the line in temperature and opened when the line is cold).
- The opening/closing torque is much lower than a corresponding wedge type valve, resulting in less expensive actuation systems.
- The “sliding” feature keeps dirt away from the seating surfaces.
The double spring loaded disc has the tendency to trap working fluid in the body cavity when the valve is closed. This results in the need of pressure equalizing system between the body cavity and the upstream line. This is obtained with internal equalizing hole or external equalizing line. Should it be necessary to maintain a bi-directional operation feature, the equalizing system can be obtained with an external by-pass and equalizing system with two bypass valves. This allows a warm-up bypass feature (two open bypass valves) and pressure equalizing system in one or the opposite direction by opening one bypass valve and keeping the other in the closed position.
HOTLINE:
091-187-1111
EMAIL:
sales@multiphase-og.com
LINE ID:
@multiphase