flat gate valve used on pipelines of petroleum, natural gas, water, oil, etc. To stop or connect the medium in pipeline.
single disc flat gate valve
It adopts two kinds of structures, they are single-disc guiding hole and non-guiding hole.
The channel will be more smooth with guiding hole. It is suitable for gas and oil transportation, etc.
It mainly used on pipelines of petroleum, natural gas, water, oil, etc. The pressure will be Class150 900Lb ,
PN1.0 16.0MPa . To stop or connect the medium in pipeline.
Production enforce standards
Product specification
|
Design spec
|
Face to face
|
Flange end
|
Test and check
|
Pressure temp
|
Marking
|
JB/T 5298
|
JB/T 5298
|
JB/T 79
|
JB/T 5298
|
GB9131
|
GB/T 12220
|
API16D
|
API 6D
|
ANSI B16.5
|
API 6D
|
ANSI B16.34
|
MSS SP-25
|
Chief property and specification
Class
|
Normal temperature
pressure test
|
Applicable
temperature
|
Applicable
medium
|
|
Body
|
Left seal
|
Right seal
|
Low pressure
seal
|
G type
|
D type
|
Ordinary
|
Bear sulfur
|
Ordinary
|
PN(MPa)
Nominal pressure
|
1.6
|
2.4
|
1.76
|
1.76
|
0.6
|
-29 to 250
|
-46 to 121
|
-29 to 121
|
Including H2O
and CO2
500Mg/m3
|
Petroleum
gas
water etc
|
2.5
|
3.75
|
2.75
|
2.75
|
0.6
|
4.0
|
6.0
|
4.4
|
4.4
|
0.6
|
6.4
|
9.6
|
7.04
|
7.04
|
0.6
|
Lb
|
150
|
3.1
|
2.3
|
2.3
|
0.6
|
300
|
5.52
|
7.6
|
5.52
|
0.6
|
Main part material
Name
|
Part material
|
Part name
|
JB/T7298
|
API6D
|
|
Cover
|
WCB
|
WC6
|
A352-LCB
|
A351-CF8M
|
Body/bonnet
|
Board
|
2Cr13+ENP
|
20CrMoV+STEL
|
ANSI410+ENP
|
ANSI316+ENP
|
Wedge
|
Stem
|
2Cr13
|
2Cr13
|
A182-F6a
|
A182-F316S
|
Stem
|
Seat
|
25+PTFE
|
20CrMoV+STL
|
A105+PTFE
|
A182-F316+PTFE
|
Seat
|
Staff
|
NVR/FPM
|
Flexible graphite
|
PTFE+FPM
|
Packing
|
Mat
|
18-8 flexible graphite
|
Gasket
|
Bolt
|
35
|
35CrMo
|
A193-b7M
|
A193-B7M
|
Bolt
|
Temperature
|
-29 to 250 oC
|
-29 to 550 oC
|
-46 to 350oC
|
-46 to 200oC
|
Suitable temperature
|
Medium
|
Water oil steam
|
Steam oil
|
Steam oil
|
Nitric acid
|
Suitable medium
|
|