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Ningbo Longyi Machinery Imp. & Exp Co., Ltd.
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Cast steel gate valve are widely used forvarious application. We can produce size range 2” to 48”; Pressure Class 150#to 2500#; API 600 / ASME B16.34 standard and so on. We also can make DIN, BS,GB, JIS etc.
OS&Y, Rising stem, Flexible Wedge
Bolted bonnet, threaded or welded seat ring
ASTM A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M, A351CN7M
Bolted bonnet, threaded or welded seat ring
ASTM A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M, A351CN7M
Standards compliance
Design and Manufacture: ANSI B16.34, API 600, API 6D, API 603, BS1414
Face to face (end to end): ANSI B16.10, API 6D
Flanged connection: 2"~24" to ANSI B16.5, 22",26"~36" to MSS-SP-44 to API605 on Request
Test and inspection: API 598, API 6D
Butt welded end: ANSI B16.5
Design and Manufacture: ANSI B16.34, API 600, API 6D, API 603, BS1414
Face to face (end to end): ANSI B16.10, API 6D
Flanged connection: 2"~24" to ANSI B16.5, 22",26"~36" to MSS-SP-44 to API605 on Request
Test and inspection: API 598, API 6D
Butt welded end: ANSI B16.5
A. Anti-friction ball thrust bearing: Reduces friction between matingparts to ensure smooth operation
B. Grub screw: Secures yoke nut in the bonnet
C. Grease nipple: Supplies lubricant to the mating parts
B. Grub screw: Secures yoke nut in the bonnet
C. Grease nipple: Supplies lubricant to the mating parts
Materials | ||
NO. | Part Name | Material |
19 | Grease Nipple | Brass |
18 | Grub Screw | Carbon steel |
17 | Hand Wheel Nut | Carbon steel |
16 | Hand Wheel | Malleable lron/cast steel/ ductile lron/fabricatedsteel |
15 | Yoke Nut | Carbon steel/SS |
14 | Eye Bolt and Nut | A 193 B7/A194 2H~A193 B8/A194 8 |
13 | Pin | Carbon steel/stainless steel |
12 | Stem Nut | A 439-D2/cu-alloy |
11 | Gland Flange | Carbon steel/equivalent to body material |
10 | Gland | Stainless steel |
09 | Back Seat | Stainless steel |
08 | Stem | Stainless steel |
07 | Seat Ring | CS+SS/SS/SS+STL |
06 | Wedge | Material see body |
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 |
