fkb indústria de equipamentos ltda. knife · pdf filedrilling din pn10 (nbr 7675 pn10)...

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.





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.





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





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





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)





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.

fkb indústria de equipamentos ltda. knife · pdf filedrilling din pn10 (nbr 7675 pn10)...

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