FKB INDÚSTRIA DE EQUIPAMENTOS
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br 1
General Description The model VGU-06 can control and block the abrasive fluid sewage. They are strong equipments to be installed
between flanges, with Wafer Total Lug body, which facilitates the installation and gives a better distribution of the
clamping between the flanges. With Sealing system through Interchangeable Sleeves made of special elastomer,
those which have permanent contact with the knife, this model assures excellent performance, durability and 100%
tightness in both directions, on open / close positions, no accumulation point and contact with the fluid along the
body.
General Application
Abrasive Processes
Mining Pulp
General Solids
Abrasive liquids
Similar
Key Features and Benefits
Can be applied in liquid, humid or dry processes / fluids;
Interchangeable sleeves with permanent contact with the knife, which minimizes the effort / stress of the rubber and assures better resistance and durability for processes with a high number cycles in open and close processes;
Interchangeable seats that offer easy and quick changing, not necessary to dismantle the valve;
Covered passage, avoiding contact of the process / fluid with the body of the valve;
Interchangeable sleeves reforced with steel core;
Full bore and no cavity, which eliminates turbulence, loss of pressure and possible stop of solids on the valve / tubbing;
100% tightness in both directions;
Has knife auto-lubrication system, eliminating the need of frequent maintenance and lubrication of the knife;
Sleeves manufactured with rubber specially developed to assure better durability, resistance and performance to abrasion;
Internal and / or external stem protected by ribbed covering and protection tube, eliminating damage to it in case of aggressive environment;
The retention box has a purging system and amplified cleaning caps to perform preventive maintenance without removing the valve of the process line.
FKB INDÚSTRIA DE EQUIPAMENTOS
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br 2
Constructive Description
Standard Construction
MSS-SP81, last revision
Body
Designed in two-pieces cast-iron
Face-to-face
Wafer (Compact) and Total LUG (all the holes for Flange Fixation).
Gate
Built on flat steel plate, designed in 4 minimum factor of safety as the tension (pull) and 2 as the minimum factor of
compressive and shear force.
Special FKB Coverage: gives significant higher performance of the wearing resistance due to abrasion
Sealing System / Covering of the passage
Strong Elastomer Covering ring, to ensure Facial sealing system with the scraper, inserted inside the body of the
valve, so that:
Covers the passage, protecting the body from the abrasive fluid;
Ensures 100% of tightening on open and close positions, whereas the valve is in open / close positions, the
interchangeable sealing rings compress the knife, assuring full bore and minimum stress to the sealing ring;
Does not allow obstruction of passage, ensuring longer life to the fence and very low loss of flow and / or
turbulence;
No need of sealing gaskets between the valve and pipe flanges because the sealing rings cover the face-to-
face of the valve.
FKB INDÚSTRIA DE EQUIPAMENTOS
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br 3
FKB Natural rubber: Very high resistance to abrasion, strain, tear strength and flexibility. Limitations: Low resistance to hydrocarbons, greases, oils, acids and ozone. Maximum temperature 72°C. EPDM: Good abrasion resistance, stress, tear strength and flexibility. Limitations: Low resistance to most fluids based on mineral oil, oil and grease. Maximum temperature 110ºC. Viton: High resistance to work at high temperatures. Excellent resistance to chemical fluids, acids, hydrocarbons,
steam and oils in general. Low tear resistance and oxygenated solvents. Maximum temperature 200°C.
Retention Box
Made of Carbon Steel with drainage system and tamps to make the cleaning easier.
Note:
- It’s very important the period cleaning / drainage of the retention box, in order to not accumulate the fluid, then
causing lock of the open / close operation.
- The passage of the fluid through the retention box occurs only during the valve operation, when the valve is totally
opened or closed, there is no passage.
Superior Sealing (Box Packing)
Made of lubricated gasket in order to ensure no leakage from the Preme and also lubricates the knife to increase
the life of the Passage Seal (Interchangeable sleeves).
Guide of the Knife
Made of metal has the function of guiding the knife so as to eliminate any possibility of misalignment, which would
damage the hoses.
Reinforced Support (Castle)
Built by 4 (four) steel formed sheets and reinforced, which guarantee better support and eliminates the possibility of
warpage of the castle and possible failure of the body in the fixation area.
Stem
Made of stainless steel and designed to support the operation of the valve under maximum pressure, then the level
of slenderness is less than 200.
Hand Starter: Stem is designed to transmit, at least, twice the manual engine output.
Pneumatic, Hydraulic and Electrical Actuators: Stem is designed to transmit, at least, 1.25 times the actuator effort
output.
Protection of the Stem
All valves are equipped with flexible protection on the rod so as to prevent corrosion and / or locking of the valve
due to fouling. When the valve has Manual or Electric Actuator drive, this will also have a protection tube for
External stem (above the steering wheel or electric actuator).
Operation
Manual:
- Manual valves to DN 10" are manufactured with torque relief system and operated directly by the wheel.
- Manual valves to DN 12" and larger are manufactured with reducer gears and operated by steering wheel.
Note:
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari |Guararema – SP | CEP 08900-000 Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
4
- When necessary the valves DN 6 "to 10" can also be manufactured with gear reducer, but must be requested at
the budget stage;
- It is not suggested manual override for DN valves higher than 24", it will require many turns on the steering wheel
and the time for full operation of the valve is too long, thus increasing the knife display, processing speed / fluid and
can wear the hoses and / or knife.
Strong and Reforced Pneumatic Actuator: Designed and developed to operate with, at least, 4bar of working
pressure.
Strong and Reforced Hydraulic Oil Actuator: Designed and developed to operate with, at least, 100bar of working
pressure.
Electric Actuator: Designed and developed to operate, at least, 150% of minimum necessary torque to operate the
valve under maximum pressure.
Note: Other Actuators upon request
Working Pressure
Knife Gate Valves with Gates: AISI 316, AISI 316L, 2205 Super Duplex and C-276 Hastelloy
DN (Ø) 2” to 16” 18” to 24”
50mm to 400mm 650mm to 1050mm
CWP (Pressure of operation)
10 bar 6 bar
150 psi 90 psi
100 mca 60 mca
Knife Gate Valves with Gates: 17-4PH
DN (Ø) 2” to 16” 18” to 24”
50mm to 400mm 650mm to 1050mm
CWP (Pressure of operation)
14 bar 8,5 bar
200 psi 120 psi
140 mca 85 mca
-CWP: Working pressure for temperatures from 0 to 70°C;
-Hydrostatic test according to ISO 5208;
-Hydrostatic sealing test with the valve on Open and Close positions: 1,1 x CWP.
- For other sizes or pressure: upon request.
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari |Guararema – SP | CEP 08900-000 Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
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Material
1 Body Nodular Cast Iron, ASTM A536
2 Preme gasket Carbon Steel, ASTM A536
3 Cleaning Lid (Option) Carbon Steel, ASTM A536
4 Sealing of the Cleaning Lid (Option)
Natural Rubber, EPDM, Chlorobutyl, Viton and others
5 Gate AISI 316L, AISI 317L, 17-4 PH,
Hatelloy, Alloy and others
6 Hoses / Sleeves Natural Rubber, EPDM, Chlorobutyl,
Viton and others
7 Superior Sealing Synthetic fiber with PTFE
8 Action Support Carbon Steel, ASTM A536
9 Fork Stainless Steel, ASTM A351 CF8
10 Stem AISI 304, AISI 316 and others
11 External Protection Stem Carbon Steel, SAE 1020
12 Internal Protection Stem Flexible Rubber or canvas
13 Hand Wheel SAE 323 (Aluminium)
14 Stem Nut Brass or Bronze restistant to corrosion
15 Prisoners Carbon Steel or Stainless Steel
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari |Guararema – SP | CEP 08900-000 Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
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Installation
All equipments provided by FKB are accompanied by an Installation, Operation and Maintenance manual. In case
of doubt, please contact us.
Flange of Fixation
DRILLING ANSI B16.5 – 150 lbs
DRILLING DIN PN10 (NBR 7675 PN10)
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-06 (Rev. 08/2015)
Estrada do Akama, 1300 – Lambari |Guararema – SP | CEP 08900-000 Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
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Dimensions
Note:
- Models VGU-06 are manufactured until 60”, other gauges under request;
- Dimensional Drawings and Detailed material list are presented after receipt of the Purchase Order.