Stem Gate Valve
Specifications
Stem Gate Valve1.Medium:water,oil,gas
2.Design:API,GB,JIS
3.PN:Class150-2500Lb
4.Materials:CS,SS304,316alloy,







2. Compact structure, small bulk, perfect rigidity, safety and reliable.
3. Blow down part (disc) utilize flexible structure, can automatically compensate distortion of body due to abnormal burden or temperature, so seal reliable and prevent wedge disc being blocked.
4. Manual valve with size over or equal to NPS 10", class 150 pounds and size over or equal to NPS6", class 600~2500 pound equip with roller bearing to operate easily.
5. Material of main body. Material of trims, packing, washer, material of fastener can logically combine according to customers requirement or actual work status.
6. Exchangeable inside thread seat is used for NPS≥0" gate valve, random combine the material of surface of blow down part to meet the requirement of work status, prolong service life.
Desing & manufacture |
Face to Face/End to End |
Flange Dimension |
Butt Welding Dimension |
Pressure & Temperature |
lnspection & Test |
APl 600 |
ASME B16.10 |
ASME B16.5 |
ASTM B16.25 |
ASME B16.34 |
APl 598 |
Nominal Pressure |
Shell Test |
Water Seal Test |
Air Seal Test |
|||
MPa |
Lbf/in2 |
MPa |
Lbf/in2 |
MDa |
Lbf/in2 |
|
150 |
3.1 |
450 |
2.2 |
315 |
0.5 7 |
60 00 |
300 |
7.8 |
1125 |
5.6 |
815 |
||
600 |
15.3 |
2225 |
11.2 |
1630 |
||
900 |
23.1 |
3350 |
16.8 |
2440 |
||
1500 |
38.4 |
5575 |
28.1 |
4080 |
||
2500 |
64.6 |
9367 |
47.4 |
6873 |
||
Body |
ASTM A216 WCB |
ASTM A351
CF8
|
|||
Wedge disc |
WCB |
CF8 |
CF8M |
Monel |
|
Stem |
F6a |
F304 |
F316 |
Monel |
F304 |
Wedge disc Sealing face |
13Cr 13Cr STL |
304 STL |
316 STL |
Monel |
304 304 STL |
Seat ring sealing face |
13Cr STL STL |
304 STL |
316 STL |
Morel |
304 STL STL |
Body |
ASTM A351 CF3 |
ASTM A351 CF8M |
ASTM A351 CF8 |
Wedge disc | |||
Stem |
F304L |
F316 |
F316 |
Wedge disc Sealing face |
304L 304L STL |
316 316 STL |
316L 316L STL |
Seat ring sealing face |
304L STL STL |
316 STL STL |
316L STL STL |
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