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Chek valve

426bc776-d10f-4580-b624-b1fc99ae1170
 
DESCRIPTION
A check valve normally allows fluid to flow through it in only one direction. They are two-port valves. They are work automatically and most are not controlled by a person or any external control. They are installed both onshore and offshore, in cryogenic and water treatment services, in oil & gas and power generation plants.
DESCRIPTION
3.1 Valve design
based on API 6D, API 594, API 602, BS 1868, BS 5352 and customer requirements
3.1 Valve design
3.2 Temperature range
-101 to 350°C
3.2 Temperature range
3.3 Size
NPS 2- 52
3.3 Size
3.4 Pressure rating
ASME 150 - ASME 2500
3.4 Pressure rating
3.5 Face-to-face
As per ASME API 594, API 6D, B1610 standard
3.5 Face-to-face
3.6 End connections
RF, RTJ as per B16.5, B16.47
BW, Butt Welded as per B16.25
Wafer Type
Lug Type
SW, Socket Welded as per B16.11
3.6 End connections
3.7 Body design
Forged or cast one-piece
3.7 Body design
3.8 Disc type
Swing Type
Single Plate
Dual Plate
Piston Type
Ball Type
3.8 Disc type
3.9 Seat design
Metal-seated with hard facing on Disc and Seats
Soft seat
3.9 Seat design
3.10 Features
Anti-Static Device
Bolted Cover, Pressure seal Cover
Non slam
Through Conduit
3.10 Features
3.12 Testing & certifications
Compliance with API 6D & API 598 inspection and testing
Compliance with API 6A inspection and testing
Fire safe and fire tested as per API 6FA
3.12 Testing & certifications
Through Conduit Swing type
Size: NPS 2"~52"
Pressure Rating: ASME Class150~2500
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, AL Bronze
End connection: RF, BW, RTJ
Materials according to NACE MR 01.75. 
Through Conduit Swing type
Wafer Type
Size: NPS 2"~52"
Pressure Rating: ASME Class150~2500
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, AL Bronze
End connection: double flange, Wafer, Lug type, Wafer Lug
Materials according to NACE MR 01.75. 
Wafer Type
Lifting type
Size: UP to 2"
Pressure Rating: ASME Class150~2500
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, AL Bronze
End connection: SW, NPT, FE
Materials according to NACE MR 01.75. 
Lifting type
Non slam check valve
Size: NPS 2"~52"
Pressure Rating: ASME Class150~2500
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, AL Bronze
End connection: double flange, Wafer, Lug type, Wafer Lug
Materials according to NACE MR 01.75. 
Non slam check valve
Cryogenic
Size: NPS 2"~30"
Pressure Rating: ASME Class150~1500
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, AL Bronze
End connection: BW, double flange, Wafer, Lug type, Wafer Lug, SW, NPT
Materials according to NACE MR 01.75. 
Cryogenic
Pressure Seal Cover
Size: NPS 2"~30"
Pressure Rating: ASME Class900~2500
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, AL Bronze
End connection: BW, FE
Materials according to NACE MR 01.75. 
Pressure Seal Cover

DESCRIPTION

Gate valves are used when the requirements are: low flow resistance, simple design, high capacity, low cost and hermetic closing. The main features of gate valves are the sealing surfaces between the gate and seats
Godakhtar gate valves are reliable, offering a tight shut-off and low pressure drop. The design covers a wide range of requirements to meet any customer need from general to severe service conditions.
Godakhtar gate valves are in compliance with the latest edition of API 6D, API 6A, API 600, API 602, BS 1414, BS 5352 and ASME B16.34.

1.1 Valve design

1.2 Temperature range

-101 to 350°C

1.3 Size

NPS 1.13/16 –16.3/4
NPS 2- 60

1.4 Pressure rating

ASME 150 – ASME 2500
API 5000-API 10000

1.5 Face-to-face

As per API 6D standard
As per API 6A standard

1.6 End connections

RF, RTJ as per B16.5 &B16.47
BW, Butt Welded as per B16.25
SW, Socket Welded as per B16.11
6B, 6BX as per API6A

1.7 Body design

Forged or cast one-piece
Disc type
Flexible type
Solid type
Slab type
Expanding type

1.8 Seat design

Metal-seated with hard facing on wedge and Seats
Soft seat

1.9 Features

Anti-Static Device
Anti Blow out stem
Easy in line maintenance 
Union Bonnet, Welded Bonnet, Bolted Bonnet, Pressure seal Bonnet
OS&Y, IS&Y
Bellows seal

1.10 Operator

Manual: Gear with handwheel
Actuated: Linear Pneumatic/ Hydraulic/Electric/Power Handwheel

1.11 Testing & certifications

Compliance with API 6D & ISO 5208 & API 598 inspection and testing
Compliance with API 6A inspection and testing
Fire safe and fire tested as per API 6FA/ 607
Fugitive Emission as per ISO15848

1.12 Available as per API 6A Standard

Product specification levels (PSL 1, 2, 3, 3G and 4)
Performance requirement levels (PR1, PR2)
Design validation as per PR2F