Author: HF Valves

  • Cast Steel Trunnion Mounted Ball Valve

    Cast Steel Trunnion Mounted Ball Valve

    Product

    Cast Steel Trunnion Mounted Ball Valve

    Cast Steel Trunnion Mounted Ball Valve is suitable for long-distance pipelines and general industrial pipelines, and its strength, safety, harsh environmental resistance, etc., suitable for various corrosive and non-corrosive media. The fixed ball valve has small torque, small seat deformation, stable sealing performance and long service life, and is suitable for high-pressure and large-diameter occasions.

    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

    Product

    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.

    cast steel floating ball valve

    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

    Temperature

    -196℃-540℃

    Pressure Test

    API598 API 6D BS12569

    Application

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

    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

    Product

    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

    Product

    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

    Product

    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.
  • Triple Eccentric Butterfly Valve

    Triple Eccentric Butterfly Valve

    Product

    Triple Eccentric Butterfly Valve

    Triple Eccentric Butterfly Valve, also known as Triple Offset Butterfly Valve, is a high-performance industrial butterfly valve featuring advanced triple offset technology and metal seat design. It provides bubble-tight sealing, low operating torque, excellent durability, and reliable performance under high pressure and high temperature conditions.
    Widely used in oil & gas, petrochemical, LNG, power generation, chemical processing, and water treatment industries, this triple offset butterfly valve is designed for critical applications involving steam, gas, oil, and other demanding media. It is an ideal solution for reliable shut-off and precise flow control in industrial pipeline systems.

    Specification

    Size: DN100~DN3600

    Pressure: 150LB 300LB

    Connection: Wafer type, Lug Type,

    Body: WCB;stainless steel ;Aluminum bronze

    Seat: Stillite;tungsten carbide; nickel alloys; Monel; stainless steel

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

    Main Parts Material:

    BODY、DISC

    WCB

    CF8/304

    CF3M/316L

    STEM

    2Cr13

    304

    316L

    O RING

    304+Flexible graphite

    304+PTFE

    304+PTFE

    PACKING

    Flexible graphite

    PTFE

    PTFE

    Features

    1. The butterfly valve adopts three eccentric hard seal structure, seat and plate are almost wear-free
    2. The dual advantages of metal hard seal and elastic seal, have excellent sealing performance in low temperature and high temperature, corrosion resistance, long service life and other characteristics.
    3. Valve disc overlays HF, which is wear-resistant and has a long service life
  • High-performance Bufferfly Valve

    High-performance Bufferfly Valve

    Product

    High-performance Bufferfly Valve

    Specification

    Size:NPS 2”~48”/DN50~DN4000
    Pressure: 150LB~300LB/PN10~PN50;
    Matrial:Carbon steel, heat-resistant steel, stainless steel, nickel-based alloy, titanium alloy, etc.
    Temperature range:  -196℃~300℃; 
    Connection method:  clamp, flange, lug, etcDesign: 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
    Application: petroleum, petrochemical, natural gas, electric power, water conservancy and other industries.

    Main Parts Material:

    Body

    Carbon Steel

    WCB

    Carbon Steel

    A351 Gr CF8  CF8M  CF3M

    Disc

    Carbon Steel

    A351 Gr CF8  CF8M  CF3M

    Retainer

    Carbon Steel

    A351 Gr CF8  CF8M    CF3M

    Seat

    PTFE PTFE+CLASS FIRER PTFE+GRARHITE

    PTFE /RPTFE

    Bushing

    PTFE+316SS

    PTFE+316SS

    Stem

    Carbon Steel

    A182 F304  F316 A564 Gr.630 A479 Gr.XM-19

    Pin

    Carbon Steel

    A240 Gr.316

    Seal

    PTFE

    PTFE

    Gland Packing


    PTFE PTFE+GRAPHITE


    PTFE RPTFE

    Feature:

    1. Double eccentric structure design. The uniquely designed lip sealing structure achieves zero leakage of two-way bubble level under elastic interference and self-sealing.
    2. Interchangeable PTFE seats can be used in a variety of different working conditions to achieve long service life and effect.
    3. Anti-blowout valve design.
    4. Under the working condition of fugitive medium, the low-leakage carbon fiber bowl type combined with packing structure can be adopted to meet the requirements of ISO15848 and API622 standards.
    5. The tangential pin of the valve stem is half on the valve plate and half in the valve stem, and the tangential positioning makes the squeeze force of the valve plate and the valve instead of the shear stress, making the connection more reliable.
    6. Equipped with ISO 5211 standard connecting plate, pneumatic device, electric device, gas-liquid linkage device and other remote control mechanisms can be installed for automatic control system.
  • PTFE Lined Flanged Butterfly Valve

    PTFE Lined Flanged Butterfly Valve

    Product

    PTFE Lined Flanged Butterfly Valve

    PTFE lined flanged butterfly valve is designed for handling corrosive and aggressive media in chemical, pharmaceutical, water treatment, and industrial applications. The valve features a PTFE lining that provides excellent corrosion resistance, low friction, and reliable sealing performance. With a lightweight design, low operating torque, and long service life, it is an ideal solution for demanding applications requiring high chemical compatibility and leak-free operatio

    Specification

    Size: NPS 2”-8”
    Pressure: 150LB
    Body Materials: Body Material: 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

    PTFE LINED FLANGED BUTTERFLY VALVE

    Main Parts Material:

    Part

    Material

    Body

    WCB,QT450

    Disc

    WCB,QT450

    Shaft

    2Cr13

    O ring

    EPDM / NBR/ VITON / PTFE

    Packing

    Flexible graphite

    Features:

    1. The use of PTFE lining without pins ensures the isolation of the medium from the metal and improves the reliability of the product.
    2. The sealing surface has good wear resistance
    3. It can be installed in any position, and the maintenance is convenient.
    4. The seal can be replaced, and the sealing performance is reliable to achieve zero leakage in both directions.
    5. Rubber material has no toxicity, and is antibacterial and mildew-resistant.

  • Fully Welded Butterfly Valve

    Fully Welded Butterfly Valve

    Product

    Fully Welded Butterfly Valve

    Fully welded butterfly valve features a welded body structure, providing excellent strength, durability, and reliable sealing performance. It is designed for demanding applications in heating systems, water supply, oil & gas, and industrial pipeline systems. With a compact structure, lightweight design, and low operating torque, it ensures easy installation, stable operation, and long service life. The valve is suitable for large-diameter pipelines requiring safe and reliable flow control.

    Specification:

    Size: DN100~DN3600

    Pressure: 150LB 300LB

    Connection: Wafer type, Lug Type,

    Body: WCB;stainless steel ;Aluminum bronze

    Seat: Stillite;tungsten carbide; nickel alloys; Monel; stainless steel

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

    Fully welded Butterfly Valve

    Main Parts Material:

    BODY,DISC

    WCB

    CF8/304

    CF3M/316L

    STEM

    2Cr13

    304

    316L

    O RING

    304+Flexible graphite

    304+PTFE

    304+PTFE

    PACKING

    Flexible graphite

    PTFE

    PTFE

    Features:

    1. The fully weld butterfly valve is  with a simple structure, easy to maintain and install.
     
    2.Small in size and light in weight, suitable for compact installation space.
     
    3. Low fluid resistance: the internal flow channel of the welded butterfly valve is unobstructed, and the resistance when the fluid passes through is small, which can reduce energy consumption.
     

    4. Good sealing performance: the valve adopts rubber sealing ring or metal sealing ring, which has good sealing performance and can effectively prevent leakage. 

    5.  High temperature resistance and corrosion resistance:  valve can be made of high temperature resistant and corrosion resistant materials, suitable for a variety of working conditions.