The gate valve is a gate for opening and closing,The movenent direction of the gate is perpendicular to the direction of the
fluid.The gate valve can only be fully opened and fully closed,and cannot be adjusted or throttled.
The gate valve is sealed by the contact between the valve seat and the gate plate,and the sealing surface is usually welded
with metal materials to increase wear resistance.
Design Standard |
BS1873,ASME B16.34 |
Pressure Rating |
ASTM B16.34 |
Temperature |
ASTM B16.34 |
Face to face |
ASME B16.10 |
Flange Ends |
ASME B16.5,ASME B16.47 |
Buttwelding |
ASME B16.25 |
Inspection&Test |
API598 |
Sizing Rating |
2"~48" |
Adavantaged of globe valves
Good shutoff capability
Moderate to good throttling capability
Shorter stroke(compared to a gate valve)
Available in tee,wye and angle patterns,each offering unique capabiilities
Easy to machine or resurface the seats
With disc not attached to the stem,valve can be used as a stop-check valve.
1 |
Body |
CF8 |
CF8M |
WCB |
2 |
Ball seat |
PTFE |
PPL |
|
3 |
Ball |
CF8 |
CF8M |
WCB |
4 |
Body Gasket |
PTFE |
|
|
5 |
Bonnet |
CF8 |
CF8M |
WCB |
6 |
Stem |
US304 |
SUS316 |
SUS201 |
7 |
Stem Washer |
PTFE |
|
|
8 |
Thrust Washer |
PTFE |
|
|
9 |
Stem Packing |
PTFE |
|
|
10 |
Gland Nut |
SUS304 |
SUS201 |
|
11 |
Handle |
SUS304 |
SUS201 |
|
12 |
Spring Washer |
SUS304 |
SUS201 |
|
13 |
Handle cover |
Plasic |
|
|