Industry Refrigeration of Stop Check Valve Use on Cold Room

August 03 12:45:08, 2025

Model No.: Dofun Stop Check Valve
Export Countries: Chile, Bolivia, Mexico, Vietnam, Iran, and more
Weight: 3.87kg per piece
Connection Type: Butt Welding
Test Pressure: 6.0MPa
Brand: Dofun
Packaging: Carton, Wooden Carton, or Pallet
Material: Forged Steel
Origin: China
HS Code: 8481804090
Basic Product Information:
Product Name Industrial Refrigeration Stop Check Valve for Cold Rooms
Nominal Pressure 4.0 MPa
Test Pressure 6.0 MPa
Temperature Range -50°C to +150°C
Suitable Medium Ammonia, Fluoride, and other refrigerants
Size (Inch) 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 7"
DN (Diameter) DN32, DN40, DN50, DN65, DN80, DN100, DN125
Company Information
We are a professional manufacturer of refrigeration valves, including ammonia valves, Bitzer, Carrier, and Copeland compressor service valves, since 2011. We have CE and ISO9001 certifications. Our products are exported to countries such as Chile, Vietnam, Mexico, and Iran.
Drawings:
Industry Refrigeration of Stop Check Valve Use on Cold Room
Frequently Asked Questions
1. What is your MOQ?
20 pieces
2. Are you a factory?
Yes, we are a factory with our own production line.
3. What is your delivery time?
We have stock available, or it takes about 15 working days for order fulfillment.
4. Do you offer discounts?
Yes, we offer different discounts based on order quantity.
5. How do you ship the goods?
By sea or air, depending on customer preference.
6. What payment methods do you accept?
T/T, L/C, Western Union.
Other refrigeration valves available include:
Industry Refrigeration of Stop Check Valve Use on Cold Room
Industry Refrigeration of Stop Check Valve Use on Cold Room
Industry Refrigeration of Stop Check Valve Use on Cold RoomIndustry Refrigeration of Stop Check Valve Use on Cold Room
Application:
This stop check valve is widely used in industrial refrigeration systems, especially in ammonia cold rooms. It controls the flow of ammonia by turning the handwheel. The valve is ideal for use in refrigeration equipment and piping systems where precise control is required.

Injection Machine Screw And Barrel

The Injection Machine Screw and Barrel are essential components of the injection molding machine. The screw, often referred to as the auger, is a rotating element that functions to transport, plasticize, and compress the material (typically plastic) before injecting it into the mold. The barrel, on the other hand, is a static tube that houses the screw and serves as the chamber where the Plastic Material is heated and melted before being propelled forward by the screw.

Advantages:

  1. Precision and Efficiency:

    • The screw's design and rotation speed can be precisely controlled to achieve desired plasticization and mixing of the material. This ensures a consistent and uniform flow of molten plastic into the mold.
    • The barrel's internal surface is usually polished to minimize friction and heat loss, thereby improving thermal efficiency and material flow.

  2. Material Versatility:

    • Injection machine screws and barrels can be tailored to suit a wide range of plastic materials, from thermoplastics to thermosets. The screw geometry and compression ratio can be adjusted to optimize material flow and plasticity.

  3. Durability and Longevity:

    • Materials like 38CrMoALA, commonly used in screw and barrel construction, offer excellent strength and wear resistance. Proper nitriding and tempering processes further enhance their hardness, durability, and corrosion resistance.
    • Surface treatments like chromium-plating and nitriding also increase the lifespan of the screw and barrel by reducing wear and abrasion.

  4. Energy Efficiency:

    • The optimized design of the screw and barrel helps minimize energy consumption and heat loss. This not only reduces production costs but also contributes to a greener and more sustainable manufacturing process.

  5. Maintenance Convenience:

    • The modular design of modern injection machine screws and barrels allows for easy disassembly and reassembly for maintenance or replacement purposes. This reduces downtime and ensures continuous operation of the injection molding machine.

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