Flanged Forged Steel Pressure Seal Gate Valve

Flanged Forged Steel Pressure Seal Gate Valve

Introduction
Forged steel flanged pressure seal gate valve is the most common on-off valve. This pressure seal valve is mainly composed of valve body, disc, bonnet, valve gland, gasket, bolt and nut. Disc is the on-off component. It utilizes disc to connect (by fully opened) or cut off (by fully closed) the medium in the pipeline. The disc moves up and down in the direction perpendicular to the moving medium. Gate valve cuts off the medium movement like a sluice gate, so it’s also called sluice valve.

Application
Flanged pressure seal gate valve can be widely applied as fluid regulating and intercepting equipment in various pipelines, such as tap water, sewage, construction, petroleum, chemical, food, medicine, textile, electric power, shipbuilding, metallurgy, and energy pipeline systems.

Classification
Flanged pressure seal valves can be classified according to fluid’s pressure grades (such as 900LB, 1500LB and 2500LB).

Advantages
1. Flanged pressure seal gate valve is suitable for using in pipelines on various transmission systems.
2. The great sealing property and high wear resistance of the valve contributes to reducing the cost.
3. 18 months warranty and lifelong technology service are available for our products.
4. Valve seat is replaceable, which makes maintenance more simple and convenient.
5. Valve body adopts precision casting technique.
6. Twice shot blasting processing on outer surface makes the flanged steel valve look fine and smooth.
7. Numerical control processing is utilized on valve disc.
8. Forged steel flanged pressure seal gate valve needs small torsion to open.

Pressure: CLASS900-2500 PN16.0-42.0
1. Welded Bonnet/Pressure Sealed Bonnet
2. Reduced Port
3. Solid Wedge Gate
4. Flange Ends/Butt-Welding Ends

Technical Specification of Flanged Pressure Seal Gate Valve

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/T9113JB/T82.1~82.4
Butt Welding Ends ASME B16.25 GB/T12224
Inspection & Test API598 JB/T9092

Material List for Main Parts of Flanged Pressure Seal Gate 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 Hand Wheel A197 or A47-32510

Main Dimensions & Weight of Flanged Pressure Seal Gate Valve

Pressure Size Main Dimension of Valve Weight(kg)
mm in. d LRF LBW LRTJ H W  
WB PB WB PB
CLASS900 PN16.0 15 1/2 10 216 216 216 197 321 180 9.8 11.5
20 3/4 13 229 229 229 211 321 180 9.7 11.2
25 1 19 254 254 254 238 321 180 9.5 10.8
32 1-1/4 24 279 279 279 257 380 200 17.5 18
40 1-1/2 40 305 305 305 276 414 200 21.6 22
50 2 50 368 368 371 320 502 300 42.7 44
CLASS1500 PN26.0 15 1/2 10 216 216 216 197 321 180 9.8 11.5
20 3/4 13 229 229 229 211 321 180 9.7 11.2
25 1 19 254 254 254 238 321 180 9.5 10.8
32 1-1/4 24 279 279 279 257 380 200 17.5 18
40 1-1/2 40 305 305 305 276 414 200 21.6 22
50 2 50 368 368 371 320 502 300 42.7 44
CLASS2500 PN42.0 15 1/2 10 264 264 264 197 321 180 12.3 13
20 3/4 13 273 273 273 211 321 180 12.1 12.7
25 1 19 308 308 308 238 321 180 11.8 12.5
32 1-1/4 24 349 349 352.2 257 380 200 20.9 21.8
40 1-1/2 40 384 384 387.2 276 414 200 27.5 29.3
50 2 50 451 451 454.2 320 502 300 53.3 55.4
Note: H means the height when valve is fully opened.

Attentions When Selecting Flanged Pressure Seal Gate Valves
1. Medium (Pressure Seal Valve’s Material and Corrosivity)
2. Working Pressure (Intensity and Airtightness)
3. Working Temperature
4. Size of Diameter
5. Valve Form (Category, Structure and Connection Type)

Attentions When Using Flanged Pressure Seal Gate Valves
Please avoid small opening of the disc, since the washout of medium in high speed flow will accelerate sealing surface’s damage.

Payment, Package, Delivery and Maintenance
1. Products can be paid by T/T, D/P, D/A, L/C or according to your requirement.
2. Pressure seal valves are packaged by standard exported wooden cases.
3. Our flanged pressure seal gate valves are transported by sea, railway or air.
4. Guarantee period of our products is 18 months. Lifelong technology service is offered.

Lanteky Valve Industry specializes in researching, designing, manufacturing and selling pressure seal valves. Our main products include ball valves, gate valves, globe valves, check valves, strainers and forged steel valves. Our flanged pressure seal gate valves are exported to Brazil, Argentina, Mexico, Canada, Russia, Kazakhstan, Indonesia, South Korea, Japan, Australia, Bulgaria, Spain, France, England, Sweden, Dubai, Arab, Pakistan, South Africa, etc.

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