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Forged steel gate valve

    Forged steel gate valve

    The Forged Steel Gate Valve is a high-strength industrial valve designed for reliable on/off flow control in pipelines carrying liquids, gases, or steam. Made from premium forged steel, it provides exceptional durability, high pressure resistance, and long service life in demanding industrial environments. Its robust construction ensures tight sealing, minimal leakage, and smooth operation, making it ideal for oil & gas, petrochemical, power generation, and water treatment industries. The valve complies with international standards such as API 600 and ASME B16.34, offering high reliability and safety in critical pipeline applications.
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Features

1.Fluid resistanoe,the drag coefficient with the same length of pipe equal.

2.Simple stucure,smallsize,ight weight.

3.Tight,reliable,curent vave sealing suface material widely used plastic,sealing in the vacuum system has also been widely  used.

4.Easy to operate,opening and closing rapidly,fuly open to fuly  dosed as long as from  the rotation 90°,to facitate  the remote contol.

5.Easy maintenance,simple valve,seals are generally active,are relatively easy to replace demolished.

6.In the fuly open or fuly dosed,the ball and seat sealing surface and the dieledric isolation,the medium through,it will not cause erosion of the vave sealing surface

7.Wide range of applications,from small to a few milimeters in diameter,large meters,from high vacuum to high pressure can be applied.


Technical data

公称压力Nominal pressure(Class)

150

300

600

800

900

1500

2500

 

 

试验压力 Testing pressure

壳体试验Shell test

2.93

7.55

10.0

20.1

15.0

37.5

63.0

高压密封

High pressure seal test

2.07

5.52

7.31

14.7

11.03

27.5

16.2

低压密封

Low pressure seal test

0.6

适用温度C Suitable temperature

≤425℃

适用介质Suiable medium

水、油、气Water,oil,gas


Meterial of main parts

零件名称 Part name

碳钢Carbon steel

不锈钢Stainless steel

合金钢Alloy steel

阀体Body

A105

LF2/LF3

A182F304

A182F11/F22

阀座Seat

A182F6a

A182F6a

A182F304

A182F 11/F22

闸板Gate

A182F6a

A182F6a

A182F304

A182F6a

阀杆Stem

A276-410

A276-410

A276-304

A276-410

垫片Gasket

柔性石墨Graphite+304

密封圈Ring

柔性石墨Graphite

支架Stand

A216-WCB

A216-WCB

A351-CF8

A216-WCB

阀盖Cover

A105

A350 LF2/LF3

A182 F304

A182F11/F22

螺栓Bolt

A193 B7

A320 L7

A193 B8

A193 B16

填料Packing

柔性石墨Graphite

填料压套Packing gland

A276-410

A276-410

A276-304

A276-410

填料压盖Packing cover

A216-WCB

A216-WCB

A351-CF8

A216-WCB

活节螺栓Live bolt

A193 B7

A320L7

A193 B8

A193 B7

阀杆螺母Stem nut

A276-410

手轮Handwheel

A197/A47-32510


Main dimensions and weight

PN(MPa)

DN(mm)

d(缩径)

LRF

LRw

H

W

重量Weight(kg)

 

 

 

 

 

 

 

1.6/2.5

15

10

130

130

158

100

3.8/4.0

20

13

150

150

163

100

4.5/4.7

25

19

160

160

193

125

5.6/5.8

32

24

190

190

250

160

6.3/6.5

40

31

200

200

250

160

9.1/10.7

50

38

230

230

291

180

13.7/15.3

65

48

290

290

350

240

24.5/26.2

 

 

 

 

 

 

 

4.0

15

10

130

130

158

100

4.3

20

13

150

150

163

100

5.0

25

19

160

160

193

125

6.3

32

24

190

190

250

160

7.0

40

31

200

200

250

160

12.3

50

38

230

230

291

180

18.8

65

48

290

290

350

240

27.7

 

 

 

 

 

 

 

6.4

15

10

170

170

158

100

4.8

20

13

190

190

163

100

5.6

25

19

210

210

193

125

8.0

32

24

230

230

250

160

9.4

40

31

260

260

250

160

13.7

50

38

300

300

291

180

23.7

65

48

340

340

350

240

32.0

 

 

 

 

 

 

 

10.0

15

10

170

170

158

100

5.4

20

13

190

190

163

100

6.6

25

19

210

210

193

125

9.8

32

24

230

230

250

160

10.5

40

31

260

260

250

160

18.6

50

38

300

300

291

180

27.6

65

48

340

340

350

240

35.0


Forged Steel Gate Valve: Customer Feedback, Inspection Standards, and Installation Guide

Introduction

The Forged Steel Gate Valve is a robust industrial valve engineered for on/off control of liquids, gases, and steam in pipelines. Made from high-strength forged steel, it offers exceptional durability, high-pressure resistance, and long-term operational reliability.

Designed to meet API 600 and ASME B16.34 standards, these valves are widely used in oil & gas, petrochemical, power generation, and water treatment industries, providing tight sealing, smooth operation, and safe pipeline management.

This guide provides a detailed overview of customer feedback, inspection standards, and step-by-step installation instructions, ensuring maximum reliability and performance in industrial applications.


1. Customer Feedback

1.1 Industrial Applications

Customers across oil & gas, chemical, and power sectors report that forged steel gate valves deliver excellent performance under high pressure and temperature conditions. Key advantages highlighted include:

  • Robust construction that withstands harsh environments

  • Minimal leakage due to precise machining and forged steel material

  • Ease of operation, even in automated systems with pneumatic or electric actuators

1.2 Common Positive Feedback

FeatureCustomer Feedback
Durability“The valve has lasted for years under high-pressure steam lines with no degradation.”
Sealing Performance“Leak-free operation ensures safe handling of chemical pipelines.”
Ease of Maintenance“Flanged design allows quick disassembly and inspection, reducing downtime.”
Automation Compatibility“Electric actuators integrate seamlessly, improving pipeline efficiency.”

1.3 Improvement Requests

Some customers request:

  • Additional size options for larger industrial pipelines

  • Customized actuator solutions for automated control

  • Extended warranty options for long-term operational confidence


2. Inspection Standards

Forged steel gate valves undergo rigorous inspection and testing to ensure compliance with international standards and customer requirements.

2.1 Material Inspection

  • Chemical Composition: Verified against ASTM, API, or ISO specifications for forged steel

  • Mechanical Properties: Tensile strength, yield strength, and hardness tested to ensure long-term reliability

2.2 Dimensional and Visual Inspection

  • Flange alignment, valve face flatness, and stem dimensions are checked

  • Surface inspection for defects, cracks, or deformations

2.3 Pressure and Leakage Testing

  • Hydrostatic Test: Ensures valve body and bonnet withstand rated pressure

  • Seat Leakage Test: Confirms tight shut-off under rated pressures

  • Pneumatic Test: Detects any air leakage, especially for high-pressure gas applications

2.4 Certification

  • API 600 / ASME B16.34: Compliance with design, manufacturing, and testing standards

  • ISO 9001: Quality management system certification

  • CE / PED: Pressure equipment compliance for European markets


Forged steel gate valve

3. Installation Steps

Proper installation is critical for ensuring reliable operation and long service life of forged steel gate valves.

3.1 Pre-Installation Preparation

  • Verify valve specifications, pressure rating, and material compatibility with the pipeline

  • Inspect flanges, gaskets, and fasteners for defects

  • Ensure pipeline is clean and free of debris

3.2 Installation Procedure

  1. Align Flanges: Position the valve between pipeline flanges with correct orientation

  2. Insert Gaskets: Place recommended gaskets between the valve and pipeline flanges

  3. Install Bolts: Tighten bolts evenly in a crisscross pattern to prevent uneven pressure

  4. Check Alignment: Ensure the valve gate opens and closes smoothly without resistance

  5. Connect Actuator (if applicable): Attach pneumatic or electric actuators per manufacturer instructions

3.3 Post-Installation Checks

  • Conduct a hydrostatic or pneumatic test to confirm leak-free operation

  • Verify actuator functionality for automated systems

  • Ensure the valve moves fully open and closed without obstruction

3.4 Maintenance Recommendations

  • Inspect sealing surfaces and stem packing regularly

  • Lubricate moving parts with manufacturer-approved lubricants

  • Schedule periodic operational testing to detect early signs of wear


4. Specifications and Models

Forged steel gate valves are available in various sizes, pressure classes, and materials to suit diverse industrial needs.

ParameterSpecificationNotes
Valve TypeForged Steel Gate ValveOn/off flow control
Nominal Diameter (DN)DN15 – DN1200 (0.5” – 48”)Multiple sizes available
Pressure RatingPN10 – PN250 / Class 150 – Class 2500Depending on material
MaterialForged Steel (ASTM A105, A182 F316)High strength, corrosion-resistant
Seat TypeMetal-to-Metal or ResilientEnsures tight sealing
Temperature Range-29°C to +550°C (-20°F to +1020°F)Application-specific
End ConnectionFlanged, Butt WeldEasy installation and maintenance
ActuationManual, Pneumatic, ElectricOptional automation

5. Applications

Forged steel gate valves are widely used in industries requiring high-pressure, high-temperature, and reliable isolation:

  • Oil & Gas Pipelines: Crude oil, natural gas, and refined products

  • Petrochemical Plants: Corrosive and high-temperature chemical transport

  • Power Generation: Steam, cooling water, and high-pressure circuits

  • Water Treatment Facilities: Potable water, wastewater, and desalination plants

  • Industrial Automation: Automated pipelines with electric or pneumatic actuators


6. Conclusion

The Forged Steel Gate Valve combines robust forged steel construction, tight sealing, and reliable operation, making it a trusted solution for demanding industrial pipelines. By adhering to installation guidelines, inspection standards, and maintenance routines, operators can ensure long-term performance, reduced downtime, and enhanced safety.

Customer feedback consistently highlights its durability, leak-free performance, and compatibility with automated systems, while inspection standards and certification ensure global compliance with API, ASME, and ISO requirements.

Forged steel gate valves are therefore essential for oil & gas, petrochemical, power generation, water treatment, and industrial automation industries, offering high reliability, safety, and operational efficiency.

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