Description
Kerui Valve is a main manufacturer and supplier of forged steel valves (check valve, globe valve, gate valve, etc.). Butt weld forged steel globe valve is a valve with closure member (disc) moving along with the center line with valve seat. It is mainly composed of valve body, disc, shaft pin and stem. Since it has relative short opening and closing stroke, this valve is very suitable for cutting off and regulating medium flow.
Applications of Globe Valve with Butt Weld End
Our butt weld forged steel globe valve is widely applied on tap water, sewage, building, petroleum, chemical, food, medicine, textile, electricity, ship, metallurgy, energy and other pipeline systems, such as
1. High temperature and pressure petrochemical pipelines systems in thermal power plants and nuclear power stations
2. Pipelines with small requirement on flow resistance (pressure loss)
3. Low requirement on regulating precision and small diameter (nominal diameter ≤ 50 mm) pipelines
4. Chemical fertilizer production line
5. Alumina production process (easy-coking pipeline in desilication workshop)
6. Water and heat supply engineering in urban construction
Features of Globe Valve with Butt Weld End
1. Butt weld forged steel globe valve is much easier than gate valve in structure, manufacturing and maintenance.
2. Two times shot blasting makes exquisite outward appearance of this forged steel valve.
3. Precision casting technology is adopted to manufacture valve body.
4. CNC processing is applied on valve disc.
5. When opened or closed, there is no relative sliding between valve body and disc.
6. Butt weld forged steel globe valve is lower but longer than gate valve.
7. Since medium channel twists and turns in valve body, the fluid resistance is big.
8. It needs small torsion to open the valve.
9. This globe valve is featured by fine sealing performance and long service time.
10. Friction is small between sealing surfaces.
11. All our products have passed CE and JB/T9092 certification.
12. 18 months warranty and lifetime technology service are offered for our products.
13. The medium in this forged steel valve can only flow in one direction and the flowing direction can not be changed when butt weld forged steel globe valve is in operation.
Pressure: CLASS900-2500 PN16.0-42.0
1. Welded Bonnet/Pressure Sealed Bonnet
2. Reduced Port
3. General Disc
4. Flange Ends/Butt-Welding Ends
Technical Specification of Globe Valve with Butt Weld End
|
Technical Specification
|
ASME/API/BS
|
GB/JB
|
|
Design Standard
|
ASME B16.34/BS5352
|
GB/T12235 GB/T12224
|
|
Pressure-Temperature Rating
|
ASME B16.34
|
GB/T12224
|
|
Face-Face
|
ASME B16.10
|
GB/T12221 JB/T96-95
|
|
Flange Ends
|
ASME B16.5
|
GB/T9113 JB/T82.1~82.4
|
|
Buttwelding Ends
|
ASME B16.25
|
GB/T12224
|
|
Inspection & Test
|
API598
|
JB/T9092
|
Material List for Main Parts Butt Weld Forged Steel Globe Valve
|
No.
|
Part Name
|
ASTM
|
|
Carbon Steel
|
Tailess Steel
|
Alloy Steel
|
|
1
|
Body
|
A105
|
LF2/LF3
|
A182 F304
|
A182 F11/F22
|
|
2
|
Disc
|
A182F6a
|
A182F6a
|
A182 F304
|
A182 F6a
|
|
3
|
Stem
|
A276-410
|
A276-410
|
A276-304
|
A276-410
|
|
4
|
Gasket
|
Graphite+304
|
|
5
|
Sealing Ring
|
Graphite
|
|
6
|
Yoke
|
A216-WCB
|
A216-WCB
|
A351 CF8
|
A216-WCB
|
|
7
|
Bonnet
|
A105
|
LF2/LF3
|
A182 F304
|
A182 F11/F22
|
|
8
|
Gland
|
A216-WCB
|
A216-WCB
|
A351 CF8
|
A216-WCB
|
|
9
|
Bolt
|
A193 B7
|
A320L7
|
A193 B8
|
A193 B16
|
|
10
|
Packing
|
Graphite
|
|
11
|
Stem Bushing
|
A276-410
|
A276-410
|
A276-304
|
A276-410
|
|
12
|
Gland
|
A216-WCB
|
A216-WCB
|
A351 CF8
|
A216-WCB
|
|
13
|
Eye Blot
|
A193 B7
|
A320 L7
|
A193 B8
|
A193 B7
|
|
14
|
Stem Nut
|
A276-410
|
|
15
|
Handwheel
|
A197 or A47-32510
|
Main Dimensions & Weight
|
Pressure
|
Size
|
Main Dimension of Butt Weld Forged Steel Valve
|
|
Weight(kg)
|
|
mm
|
in.
|
d
|
LRF
|
LBW
|
LRTJ
|
H
|
W
|
|
WB
|
PB
|
WB
|
PB
|
|
CLASS900 PN16.0
|
15
|
1/2
|
10
|
216
|
216
|
216
|
310
|
333
|
180
|
13.5
|
12.5
|
|
20
|
3/4
|
13
|
229
|
229
|
229
|
310
|
333
|
180
|
12.6
|
11.8
|
|
25
|
1
|
19.1
|
254
|
254
|
254
|
310
|
333
|
180
|
11.8
|
11.5
|
|
32
|
1-1/4
|
25
|
279
|
279
|
279
|
389
|
420
|
200
|
24.4
|
23.4
|
|
40
|
1-1/2
|
32
|
305
|
305
|
305
|
389
|
420
|
200
|
22.5
|
21.7
|
|
50
|
2
|
38.1
|
368
|
368
|
371
|
498
|
524
|
300
|
45.5
|
43.5
|
|
CLASS1500 PN26.0
|
15
|
1/2
|
10
|
216
|
216
|
216
|
310
|
333
|
180
|
13.5
|
12.5
|
|
20
|
3/4
|
13
|
229
|
229
|
229
|
310
|
333
|
180
|
12.6
|
11.8
|
|
25
|
1
|
19.1
|
254
|
254
|
254
|
310
|
333
|
180
|
11.8
|
11.5
|
|
32
|
1-1/4
|
25
|
279
|
279
|
279
|
389
|
420
|
200
|
24.4
|
23.4
|
|
40
|
1-1/2
|
32
|
305
|
305
|
305
|
389
|
420
|
200
|
22.5
|
21.7
|
|
50
|
2
|
38.1
|
368
|
368
|
371
|
498
|
524
|
300
|
45.5
|
43.5
|
|
CLASS2500 PN42.0
|
15
|
1/2
|
10
|
264
|
264
|
264
|
310
|
333
|
180
|
14.3
|
13.3
|
|
20
|
3/4
|
13
|
273
|
273
|
273
|
310
|
333
|
180
|
13.1
|
12.5
|
|
25
|
1
|
19.1
|
308
|
308
|
308
|
310
|
333
|
180
|
12.4
|
11.8
|
|
32
|
1-1/4
|
25
|
349
|
349
|
352.2
|
389
|
420
|
200
|
25.
|
25.5
|
|
40
|
1-1/2
|
32
|
384
|
384
|
387.2
|
389
|
420
|
200
|
24.2
|
24.6
|
|
50
|
2
|
38.1
|
451
|
451
|
454.2
|
498
|
524
|
300
|
49
|
47.2
|
Notes:
H means the height when valve is fully opened.
The size chart of butt weld forged steel globe valve is just for reference.
Malfunction and Solution
|
Possible Malfunction
|
Reason
|
Solution
|
|
Leakage Between Disc and Valve Seat Sealing Surface
|
1.Dirty Stuff Attachment on Sealing Surface 2.Wear or Erosion of Sealing Surface 3.Deformation of Disc Caused by Excessive Closing Torsion
|
1.Cleaning Dirty Stuff 2.Regrinding Sealing Surface for Surfacing and Processing 3.Replacing this Butt Weld Forged Steel Globe Valve
|
|
Leakage Between Bolted Bonnet Valve Body and Bonnet Joint
|
1.Uneven Fastening of Connection Studs 2.Damage on Flange Joint Sealing Surface 3.Wear or Invalidity of Gasket
|
1.Refastening Evenly 2.Repairing 3.Repalcing Gasket
|
|
Leakage at Valve Stem Packing Position
|
1.Malcompression of Packing Grand 2.Wear of the Packing 3.Damage of Contact Surface between the Stem and Packing
|
1.Tightening Compression Packing Gland Nut Evenly 2.Increasing Packing Properly 3.Grinding Stem Surface or Replacing Stem
|
|
Inflexible Falling and Rising of Valve Stem
|
1.Too Tight Packing Gland 2.Skewing Packing Gland 3.Clutter in Rotating Parts 4.Damage on Stem and Thread of Valve Stem Nut 5.Stem Bending
|
1.Appropriate Release of Packing Grand 2.Adjusting Packing Gland 3.Removing Clutters and Coating Lubricating Grease 4.Truing Thread or Replacing Stem and Valve Stem Nut 5.Adjusting or Replacing Valve Stem
|
