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Class 150LB ~ 1500LB Gate Valve

Description

Applicable/Product Standards:
Steel Gate Valves Design: API 600 / API 6D / BS1414
Face to Face according to: ASME B16.10
Flanges Ends according to: ASME B16.5
Inspection and Testing according to: API 598 / API 6D
Taito Gate Valve Feature:
Full Port Design
OS&Y,Outside Screw and Yoke
BB,Bolted Bonnet
PSB,Pressure Seal Bonnet
Flexible Wedge,Fully Guided
Choice of Solid or Split Wedge
Size: 2″-48″
Pressure: 150LB~1500LB

Connection: Flanges,RTJ Flange

NO.
Part name
WCB
LCB
WC6
WC9
05
Bolt and nut
A193 Gr B7/A194 Gr 2H
A320 Gr L7/A194 Gr 4
A193 Gr B16/A194 Gr 4/7
A193 Gr B16/A194 Gr 4/7
04
Gland Packing
Graphite
Graphite
Graphite
Graphite
03
Gasket
Spiral wound/Soft lron
Spiral wound/Soft lron
Spiral wound/SS304
Spiral wound/SS304
02
Bonnet
A216 Gr WCB
A352 Gr LCB
A271 Gr WC6
A271 Gr WC9
01
Body
A216 Gr WCB
A352 Gr LCB
A271 Gr WC6
A271 Gr WC9

 

NO.
Part name
C5
C12
CF8
CF8M
05
Bolt and nut
A193 Gr B16/A194 Gr 4/7
A193 Gr B16/A194 Gr 4/7
A193 B8/A194 8
A193 B8M/A194 B8
04
Gland Packing
Graphite
Graphite
Graphite
Graphite
03
Gasket
Spiral wound/Soft lron
Spiral wound/Soft lron
Spiral wound/SS304
Spiral wound/SS316
02
Bonnet
A217 Gr C5
A217 Gr C12
A351 Gr CF8
A351 Gr CF8M
01
Body
A217 Gr C5
A217 Gr C12
A351 Gr CF8
A351 Gr CF8M

 

TAITO gate valve is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can form a wedge shape or they can be parallel. Typical gate valves should never be used for regulating flow, unless they are specifically designed for that purpose. On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate disk tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing disk and seat wear and eventual leakage if used to regulate flow. Typical gate valves are designed to be fully opened or closed. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.