FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-04 / VGU-04-HP (Rev. 06/2016) – FKB Patent
1 Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
General Description The model VGU-04 / VGU-04-HP can control and block the abrasive fluid sewage (slurry). They are strong
equipments to be installed between flanges, with Total Lug body, which facilitates the installation and gives a better
distribution of the clamping between the flanges. With Double Facial Sealing system through Sealing Rings, 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;
Strong and interchangeable seat 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;
Strong and interchangeable reinforced seats;
Full bore;
100% tightness in both directions;
There is no leakage during the drive cycle, even in Intermediate Operation position;
Has knife auto-lubrication system, eliminating the need of frequent maintenance and lubrication of the knife;
UHMW Covering Ring and Seats 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.
Automatic Cleaning System (By Pass) on the body inside, which eliminates Preventive Maintenance / Cleaning of the Retention Box;
In case of binding or locking in the actuation, VGU-03 model also has Manual Cleaning System, which enables the cleaning of the valve installed, eliminating the need to remove the valve from the process line. EXTRAORDINARY GAIN AND SAVING OF MANPOWER AND COST REDUCTION, NOWADAYS PREVAILING IN PAPER AND PULP PLANTS
Through Flange Side holes to facilitate the installation of the valve.
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-04 / VGU-04-HP (Rev. 06/2016) – FKB Patent
2 Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
Constructive Description
Standard Construction
FKB and MSS-SP81, last revision
Body
Designed in two-pieces cast-iron
Face-to-face
Strong 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 tighteningon open and close positions, whereas the valve is in open / close positions, the
interchangeable sealing rings compress the knife, assuring full bore and minimnum 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.
Zero leakage to the environment, even in intermediate running position;
No need of cleaning the Body / Retention Box and / or Preventive Maintenance seeking to eliminate the locking and / or wear seat. Flow Ramp system type By Pass is automatic.
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-04 / VGU-04-HP (Rev. 06/2016) – FKB Patent
3 Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
Superior and Inferior Sealing (Box Packing)
Made of gasket, in order to avoid the possibility of leakage through the Preme Gasket.
Guide and Scraper
Made of High Performance material for abrasion and corrosion processes, is designed to guide and scrape the
gate, in order to eliminate possible misalignment, avoiding impregnation fluid within the knife, preserving the
superior and inferior sealing.
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: Designed and developed to operate with maximum effort through 25Kgf handwheel;
- It is not suggested manual override for valves larger than 24", it will require many laps in the handwheel and the time for complete operation of
the valve will be too long, thus increasing the knife display, process / fluid speed and possible wear on 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
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-04 / VGU-04-HP (Rev. 06/2016) – FKB Patent
4 Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
Working Pressure
Standard VGU-04 Knife Gate Valves
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
VGU-04-HP High Pressure Knife Gate Valves
DN (Ø) 2” to 16” 18” to 24”
50mm to 400mm 650mm to 1050mm
CWP
(Pressure of operation)
15 bar 9 bar
210 psi 125 psi
150 mca 90 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.
Material
ITEM DESCRIPTION MATERIAL
1 Bipartite Body Nodular Cast Iron, ASTM A536
2 Preme Gasket Nodular Cast Iron, ASTM A36
3 Cleaning tamp Carbon Steel, ASTM A36
4 Gate AISI 316L, AISI 317L, 17-4 PH, Hastelloy, Alloy and others
5 Sealing of the passage / Covering Ring FKBR
6 Superior and Inferior Sealing PTFE
7 Actuation Reinforced Support Carbon Steel, ASTM A36
8 Fork Stainless Steel, ASTM 351 CF8
9 Stem AISI 304, AISI 316 and others
10 Protection of Internal Stem Ribbed Rubber or canvas protection
11 Protection of External Stem Carbon Steel, SAE 1020
12 Handwheel Aluminium, SAE 323
13 Stem Bushing Brass or Bronze resistant to corrosion
14 Prisoners Carbon Steel or Stainless Steel
FKB INDÚSTRIA DE EQUIPAMENTOS LTDA.
KNIFE GATE VALVE – VGU-04 / VGU-04-HP (Rev. 06/2016) – FKB Patent
5 Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
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-04 / VGU-04-HP (Rev. 06/2016) – FKB Patent
6 Estrada do Akama, 1300 – Lambari | Guararema – SP | CEP 08900-000
Fone: +55 11 4693-2042 / 4695-1199 | www.fkbvalvulas.com.br
Dimensions
Note:
- Measures subject to change without notice.
- Other gauges upon request;
- Dimensional Drawings and Detailed material list are presented after receipt of the Purchase Order.