Author: HF Valves

  • Fully Welded Ball Valve

    Fully Welded Ball Valve

    Fully Welded Ball Valve

    Fully Welded Ball Valve features a fully welded body design that provides excellent strength, leak resistance, and long service life under demanding pipeline conditions. With a compact structure and low maintenance requirements, it is ideal for buried pipelines and critical applications. It is widely used in oil & gas, natural gas, district heating, and pipeline transmission systems, providing reliable shut-off and flow control performance.

    Specification

    Nominal diameter

    2″ – 48″ (DN 50-DN 1200)

    Pressure range

    CLASS 150 – CLASS 2500 (Mpa 1.6- Mpa 42.0)

    Materials

    A105, LF2, F316, F11, F304, F316

    Design standard

    API 6D, API 608, API598, ASME B16.34, ISO 17292, BS5351

    Connection ends

    BW、SW

    Flange Dimension Standards

    ASME B 16.5, ASME B16.47, ASME B16.25, ASME B16.11

    Operation

    Manual、Pneumatic、Electric、Gas-liquid interaction etc. 

    Temperature

    -196℃-540℃

    Pressure Test Standards

    API598 , API 6D , BS12569

    Application

    Petroleum、Natural gas、Chemical、petrochemical、Power plant、Metallurgy、Papermaking etc. 

    Fully Welded Ball Valve

    Features:

    1. It is made of carbon steel seamless steel pipe pressed and formed integral welded ball valve, which can withstand frequent operation in the presence of impurities and chemicals, and has a long service life.
    2. The valve is compact, lightweight,extension stem also easy to keep warm and install.
    3. Adopts carbon-strengthened PTFE inclined elastic sealing ring with negative pressure on the spherical surface, zero leakage and long service life.
    4. The stem uses two “O” rings, allowing the stem to rotate freely and seal tightly.
  • Top Entry Ball Valve

    Top Entry Ball Valve

    Top Entry Ball Valve

    Top Entry Ball Valve features a top-mounted design that allows easy maintenance and inspection without removing the valve from the pipeline. Designed for high-pressure and critical applications, it provides reliable sealing, low operating torque, and long service life. It is widely used in oil & gas, petrochemical, power, and pipeline industries for safe shut-off and flow control.

    Top entry ball valve

    Specification

    Nominal diameter

    1/2″ – 60″ (DN15- DN 1500)

    Pressure range

    CLASS 150 – CLASS 2500 (Mpa 1.6- Mpa 42.0)

    Materials

    Carbon Steel, Stainless Steell, Duplex, Super Duplex, Inconel

    Design standard

    API 6D, API 608, API598, ASME B16.34, ISO 17292, BS5351  

    Connection ends

    RF、RTJ、BW、SW

    Flange Dimension Standards

    ASME B 16.5, ASME B16.47, ASME B16.25, ASME B16.11

    Operation

    Manual、Pneumatic、Electric、Gas-liquid interaction etc. 

    Temperature

    -196℃-540℃

    Pressure Test Standards

    API598 , API 6D , BS12569

    Application

    Oil and gas、Chemical、petrochemical、Power plant、Metallurgy、Papermaking etc. 

    Features:

    1. Top entry ball valve is valve Installing ball into valve body by the upper for repairing conveniently.
    2. Top entry ball valve adopts elastic interface structure, which can adapt to different deviations of the pipeline, and increase the tightness and life of the valve.
    3. The valve stem adopts self-sealing structure to improves the reliability and tightness.
    4. It can be made of different materials, and is suitable for use in various media, pressure and environments.
  • Forged Steel Trunnion Mounted Ball Valve

    Forged Steel Trunnion Mounted Ball Valve

    Forged Steel Trunnion Mounted Ball Valve

    Specification:

    Nominal diameter

    2″ – 48″ (DN 50-DN 1200)

    Pressure range

    CLASS 150 – CLASS 900 (Mpa 1.6- Mpa 15.0)

    Materials

    A105、LF2, F316, F11, F304, F316, F51 , F55;

    Design standard

    API6D、ASME B16.34、BS5351、ISO17292、DIN

    Connection ends

    RF、RTJ、BW、NPT、SW

    Operation

    Manual、Pneumatic、Electric、Gas-liquid interaction etc. 

    Temperature

    -196℃-540℃

    Pressure Test

    API598 API 6D、  BS12569

    Application

    Oil and gas、Natural gas、Chemical、petrochemical、Power plant、Metallurgy、Papermaking etc. 

    trunnion mounted ball valve

    Main Parts Material:

    Body

    A105

    A105

    F304, F304L

    F316, F316L

    LF2, LF1

    Ball

    A105+ENP/HCr,

    F6a+HCr

    A105+ENP,

    F6a+ENP

    F304, F304L+HCr

    F316, F316L+HCr

    F304+HCr

    Stem

    A105+ENP,

    A182 F6a

    A105+ENP,

    4140+ENP

    F304, F304L

    F316, F316L

    F304

    Gland

    A105+ENP

    A105+ENP

    F304, F304L

    F316, F316L

    F304

    Seat

    PTFE/RPTFE,   NYLON, PPL, PEEK, EPDM, VITON,DEVLON

    Packing

    PTFE, PPL, GRAPHITE

    Gasket

    PTFE, PPL, GRAPHITE

    Stud

    A193-B7

    A193-B7M

    A193-B8/B8M

    A193-B8/B8M

    A320-L7/L7M

    Nut

    A194-2H

    A194-2HM

    A194-8/8M

    A194-8/8M

    A194-7/7M

     

    Features:


    1. It is suitable for high temperature and high pressure corrosion resistant environment
    2. Anti-static setting. Thereby ensuring the safety and stability of industrial production.
    3. The surface of the ball and the sealing surface of the valve seat are tightly connected to ensure a good sealing effect
    4. Movable metal seat structure with leaf spring preload, easy to open and close.
  • Forged Steel Floating Ball Valve

    Forged Steel Floating Ball Valve

    Forged Steel Floating Ball Valve

    Forged Steel Floating Ball Valve is designed for reliable shut-off applications in oil and gas, chemical, power, and industrial pipeline systems. Manufactured from high-quality forged steel, it features a compact structure, high strength, and excellent sealing performance. The floating ball design ensures tight shut-off under various pressure conditions with low operating torque. Available in API and ASME standards, it is suitable for high-pressure and demanding applications, offering long service life, stable operation, and easy maintenance.

    Specification

    Size Range: 1/2″ – 4″ (DN15 – DN100)
    Pressure Rating: Class 150 – Class 1500
    Main Material: Carbon Steel, Stainless Steel, Alloy Steel
    End Connection: Threaded, Socket Weld (SW), Butt Weld (BW), Flanged
    Face to Face: ASME B16.10 (Flanged End)
    Testing Standard: API 598 / API 6D
    Temperature Range: According to material and seat selection
    Applicable Medium: Water, Oil, Gas, Steam, and Chemical Fluids
    Operation: Lever, handwheel

    Design Standard: API 6D / API 60

    forged steel floating ball valve

    Main Parts Material:

    Body

    A105

    A105

    F304, F304L

    F316, F316L

    LF2, LF1

    Ball

    A105+ENP/HCr

    A105+ENP

    F304, F304L+HCr

    F316, F316L+HCr

    F304+HCr

    Stem

    A105+ENP/

    A182 F6a

    A105+ENP/

    4140+ENP

    F304, F304L

    F316, F316L

    F304

    Seat

    PTFE/RPTFE , NYLON, PPL , PEEK, EPDM, VITON,DEVLON

    Packing

    PTFE, PPL, GRAPHITE

    Gasket

    PTFE, PPL, GRAPHITE

    Stud

    A193-B7

    A193-B7M

    A193-B8/B8M

    A193-B8/B8M

    A320-L7/L7M

    Nut

    A194-2H

    A194-2HM

    A194-8/8M

    A194-8/8M

    A194-7/7M

    Features:

    1. Corrosion-resistant, pressure-bearing capacity
    2. Automatic adjustment of tightness, stable and reliable
    3. It is suitable for high temperature and high pressure, strong corrosion conditions, and has a long life.
    4. Comply with API, CE, ISO and other related standards, high security and stability
  • Cast Steel Trunnion Mounted Ball Valve

    Cast Steel Trunnion Mounted Ball Valve

    Cast Steel Trunnion Mounted Ball Valve

    Trunnion mounted ball valve is heavy-duty ball valve designed for high pressure, large-size pipeline service. Its trunnion-supported ball reduces seat load, delivering reliable sealing under high differential pressure. This WCB cast steel trunnion ball valve is widely used in oil & gas, pipeline and chemical industries. Manual, pneumatic and electric actuators are available.

    Specification:

    Nominal diameter: 2″ – 48″ (DN 50-DN 1200)

    Pressure range: CLASS 150 – CLASS 900

    Design standard: API6D、ASME B16.34、BS5351、ISO17292、DI

    Connection ends: RF、RTJ BW、NPT、SW

    Bore: Full Bore, Reduced Bore

    Materials: WCB, WC6, WC9, WCC, CF8, CF3, CF3M, CF8M

    Operation: Manual、Pneumatic、Electric

    Temperature: -196℃-540℃

    Pressure Test: API598 API 6D BS12569

    Application: Petroleum、Natural gas、Chemical、petrochemical、Power station、Metallurgy、Papermaking etc.

    Main Parts Material:

    Nominal diameter

    2″ – 48″ (DN 50-DN 1200)

    Pressure range

    CLASS 150 – CLASS 900

    Design standard

    API6D、ASME B16.34、BS5351、ISO17292、DIN

    Connection ends

    RF、RTJ BW、NPT、SW

    Bore

    Full Bore, Reduced Bore

    Materials

    WCB, WC6, WC9, WCC, CF8, CF3, CF3M, CF8M

    Operation

    Manual、Pneumatic、Electric、Gas-liquid interaction etc. 

    Temperature

    -196℃-540℃

    Pressure Test

    API598 API 6D BS12569

    Application

    Petroleum、Natural gas、Chemical、petrochemical、Power station、Metallurgy、Papermaking etc. 

     

    Features:

    1. The valve seat adopts spring structure, which has good low-pressure sealing performance.
    2. Bi-directional sealing characteristic, using the built-in discharge valve, the cavity of the valve body can be discharged outward.
    3. The valve shaft adopts anti-blowout protection structure, low friction coefficient bearing, etc. It has excellent performance and high reliability.
  • Cast Steel Floating Ball Valve

    Cast Steel Floating Ball Valve

    Cast Steel Floating Ball Valve


    Cast Steel Floating Ball Valves feature a floating ball design, providing reliable sealing performance, compact structure and long service life. They are widely used in oil & gas, chemical, petrochemical, power and general industrial applications.

    Available types include cast steel two-piece, forged steel two-piece, forged steel three-piece and one-piece cast floating ball valves.

    Specification

    Nominal diameter:1/2″ – 8″ (DN 15-DN 200)

    Pressure range:CLASS 150 – CLASS 600

    Design standard:API6D、ASME B16.34、BS5351、ISO17292、DIN

    Connection ends:RF、RTJ、BW、NPT、SW

    Operation:Manual、Pneumatic、Electric、Gas-liquid interaction etc.

    Bore:Full Bore, Reduced Bore

    Material:WCB, WC6, WC9, WCC, CF8, CF3, CF3M, CF8M

    Cast Steel Floating Ball Valve 2

    Features:

    1. Simple structure, easy operation and easy maintenance
    2. Low fluid resistance and large flow regulation range
    3. Good sealing and strong corrosion resistance
    4. Wide range of application and long service life
  • Unfolding the Magic of Butterfly Valves: Streamlining Fluid Control

    Unfolding the Magic of Butterfly Valves: Streamlining Fluid Control

    Unfolding the Magic of Butterfly Valves: Streamlining Fluid Control

    In the world of industrial fluid control, efficiency is key. Whether it’s in the realm of oil and gas, water treatment, HVAC systems, or countless other applications, the ability to regulate the flow of liquids or gases with precision is paramount. One of the unsung heroes in this domain is the butterfly valve, a piece of engineering ingenuity that plays a significant role in streamlining fluid control.

    Butterfly valves are often overshadowed by their more famous counterparts, such as ball valves or gate valves. However, what they lack in recognition, they make up for in versatility, efficiency, and cost-effectiveness. In this blog post, we’ll unfold the magic of butterfly valves and explore how they contribute to streamlining fluid control across various industries.

    The Basics: What Is a Butterfly Valve?

    To understand the magic of butterfly valves, let’s begin with the basics. A butterfly valves is a quarter-turn valve that is typically used to regulate the flow of fluids (liquid or gas) through a pipe. It consists of a disc, often called the “butterfly,” that is mounted on a rod. When the valve is fully open, the disc is positioned perpendicular to the flow of the fluid, allowing for unrestricted flow. When the valve is closed, the disc rotates 90 degrees to a position parallel to the flow, blocking it entirely.
    The simplicity of this design is part of what makes These valves so efficient and cost-effective. Their quarter-turn operation allows for quick and easy control of flow, making them ideal for applications where on-off control and regulation of flow are essential.

    Advantages of Butterfly Valves

    Now, let’s delve into the magic of butterfly valves by exploring their numerous advantages:
    1. Quick and Easy Operation:
    The quarter-turn design of butterfly valves enables rapid opening and closing, making them ideal for applications where fast response times are essential.
    2. Cost-Effective:
    These valves are generally more affordable than other valve types, making them a cost-effective choice for many industries.
    3. Compact Design:
    Their compact and lightweight design is a significant advantage when space is limited.
    4. Low Pressure Drop:
    These valves offer low-pressure drops when fully open, which is vital in applications where energy efficiency is a concern.
    5. Minimal Maintenance:
    The simplicity of their design translates to less maintenance and fewer moving parts, reducing the likelihood of failure.
    6. Versatility:
    Butterfly valves can be used for a wide range of fluids, including water, oil, gas, and chemicals.
    7. Bubble-Tight Sealing:
    Triple offset butterfly valves provide an exceptional sealing capability, ensuring no leakage in critical applications.

    Applications of Butterfly Valves

    The versatility of butterfly valves lends itself to a broad spectrum of applications, including:
    1. Water and Wastewater Treatment:
    These valves are commonly used in water treatment plants to control the flow of water, chemicals, and sludge.
    2. Oil and Gas Industry:
    High-performance butterfly valves are crucial in the oil and gas sector for applications involving crude oil, natural gas, and refined products.
    3. Power Generation:
    These valves help control the flow of cooling water, steam, and other fluids in power plants.
    4. Chemical Processing:
    These valves are used for handling chemicals, acids, and corrosive materials.
    5. HVAC Systems:
    In heating, ventilation, and air conditioning systems, butterfly dampers regulate air and gas flow.
    6. Food and Beverage Industry:
    The sanitary design of butterfly valves makes them suitable for food and beverage processing.

    Conclusion

    In the realm of fluid control, butterfly valves quietly work their magic, ensuring the efficient and precise regulation of liquids and gases. Their simplicity, cost-effectiveness, and versatility make them indispensable in a wide range of industries. As we’ve unfolded the magic of butterfly valves, it becomes clear that these unassuming devices play a pivotal role in streamlining fluid control processes, contributing to improved efficiency and reliability across the board. Whether in the water treatment plant, the oil refinery, or the HVAC system, the butterfly valve silently but effectively keeps the flow in check.

    Welcome to our valve company! We are a leading provider of high-quality valves and valve solutions for various industries.

    Address

    Xian Hengfeng Electromechanical Equipment Co.,Ltd
    No.15,group 3,Sanlian Village,Dazhao Street Office,Chang’an District,Xi’an City, Shaanxi Province

    Hk Agent: Gracebao Steel Manufacturing Co.,Ltd
    15/F, Lucky Center No.165-171,Wanchai Road,Wan Chai,Hongkong

  • Centerline Butterfly Valve

    Centerline Butterfly Valve

    Wafer Centerline Butterfly Valve

    Specification

    Size: NPS 2”-48”
    Pressure: 150LB
    Body Materials: Cast Iron/Ductile Iron
    Seat Materials: EPDM / NBR/ VITON / PTFE
    Design: API 609, MSS SP-67
    Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1
    Pressure Test: API 598
    Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16
    Top Flange: ISO5211
    Suitable Medium: air, Sewage, steam, gas, oil, etc

    Main Parts Material:

    Part

    Material

    Body

    WCB,QT450

    Disc

    WCB,QT450

    Shaft

    2Cr13

    O ring

    EPDM / NBR/ VITON / PTFE

    Packing

    Flexible graphite

    Features:

    1. Simple and compact structure, small and lightweight, easy to transport, install and disassemble.
    2. 90 degree switch, fast switching. Low operating torque, low labor save.
    3. Good sealing performance, long life, can achieve zero leakage.
    4. Select different parts materials, suitable for various media.
    5. The flow characteristics are similar to the straight line, and the adjustment performance is good.
  • Centerline Flanged Butterfly valve

    Centerline Flanged Butterfly valve

    Centerline Flanged Butterfly Valve

    Centerline Flanged Butterfly Valve is designed for reliable flow control and shut-off in water treatment, HVAC, power, and industrial pipeline systems. With a concentric disc design, it offers low operating torque, excellent sealing performance, compact structure, and easy maintenance. The flanged connection ensures simple installation and long service life.

    Specification

    Size: NPS 2”~48”/DN50~DN1400

    Pressure: 150LB /PN1.0~1.6M/Pa

    Material:  Water, oil, gas, and various corrosive media

    Temperature: -10~150℃

    Connection: Flange

    Design: API 609, MSS SP-67

    Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1

    Pressure Test: API 598

    Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16

    Top Flange: ISO5211

    Butterfly valves

    Main Parts Material:

    PartBodyDiscStem
    MaterialDuctile Iron, Cast Iron + Rubber (NBR, EPDM)

    Ductile Iron, Bronze,

    Stainless Steel

    Stainless steel

    Features :

    1. Both sides of sealing performance are choiceness and the torque is small.
    2. Flow curve tending to straight line. Excellent regulated performance.
    3. Flange connection installed easily. Both vertical and horizontal installation are all right.
    4. Have multiplicity-sealing materials for user to choose.
    5. The valves can be used for pipe nozzle and have reliable performance.
    6.  Seat sealing and body are combined very well, with a long lifetime.
  • PTFE Lined Wafer Butterfly Valve

    PTFE Lined Wafer Butterfly Valve

    PTFE Lined Wafer Butterfly Valve

    Specification

    Size: NPS 1 1/2”-48“
    Pressure: 150LB
    Body Materials: Cast iron/Cast steel/Stainless steel
    Seat Materials: PTFE
    Disc Materials: WCB+PTFE
    Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1
    Pressure Test: API 598
    Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16
    Top Flange: ISO5211
    Applicable medium: Water, weak acid and alkali, air, steam, oil, etc.
    Design: API 609, MSS SP-67

    Rubber lined butterfly Valve seal selection:

    Seal material

    Applicable temperature

    Applicable media

    NR

    ≤85℃

    Water, air, acids and alkalis

    CR

    ≤85℃

    Water, gas, acids and alkalis

    NBR

    ≤100℃

    Water, oil

    EPDM

    ≤120℃

    Water, steam, general acids and alkalis

    Features:

    1. Small and light weight, can be installed in any position and easy to disassemble and repair.
    2. The structure is simple and compact, with a 90 ° rotation for quick opening and closing.
    3. Excellent wear reduction, self-lubrication, and reduced operating torque by over 40% compared to ordinary butterfly valves.
    4. It is non-toxic, odorless, and antibacterial, which meet the requirements of green environmental protection.
    5. Resistant to salt, alkali, and weak acid corrosion, with wide applicability.
    6. Pinless connection ensures complete isolation and high reliability between the medium and the metal.