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    4" Steam Pressure Regulator

    low price 4" pressure reducing valves for sale, available in nominal pressures of 1.6MPa, 2.5MPa and 4.0MPa, which can be customized to suit your specific needs and requirements. Steam pressure regulators are an essential component of steam systems, helping to maintain the safety, efficiency and reliability of industrial processes.
    SKU: ATO-SPR-100
    30-day Returns
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    Delivery date: 6-12 days

    The 4" steam pressure reducing valve is used in steam systems to regulate the steam pressure flowing through pipes and equipment. Steam pressure regulators are an essential part of steam systems, helping to maintain the safety, efficiency and reliability of industrial processes.


    • Model: ATO-Y34H-DN100
    • Body Material: Cast Steel 
    • Connection Form: Flange
    • Nominal Diameter: DN100 (4")
    • Nominal Pressure: 1.6MPa, 2.5MPa, 4.0MPa
    • Working Temperature: <200C
    • Applicable Medium: Water steam, boiler steam, high temperature steam, etc.
    • Weight: 52kg


    • A 4 inch steam pressure regulator automatically adjusts the pressure of the steam to maintain a constant pressure in the system.
    • The steam pressure reducing valve has a high degree of accuracy, ensuring that the pressure remains constant within a tight tolerance range.
    • The steam pressure regulator is easy to install and can be retrofitted to existing steam systems with minimal disruption.
    • ATO steam pressure regulator is highly reliable and can operate for extended periods without requiring maintenance.

    Dimension (Unit mm)

    Steam pressure reducing valve

    Dimension 1.6MPa 2.5MPa 4.0MPa
    L H1 H2 L H1 H2 L H1 H2
    DN100 350 150 390 350 150 390 380 150 385


    Steam pressure regulator installation

    1. Filter
    2. Pressure gauge
    3. Steam pressure regulator
    4. Globe valve
    5. Safety valve
    6. Bypass channel


    Steam pressure regulators are widely used in power plants, chemical plants, and refineries, where they play a crucial role in ensuring the safe and efficient operation of boilers and other steam-powered equipment. In addition, steam pressure regulators are also used in the food and beverage industry, pharmaceuticals, and hospitals, where they are utilized to control the pressure of steam used for sterilization processes. 

    Steam pressure reducing valve applications

    Tips: How to maintain a steam pressure reducing valve?

    Maintaining a steam pressure reducing valve (PRV) is essential to ensure its proper functioning and prevent any potential issues that may arise. Here are some steps to follow for maintaining a steam PRV:

    • Inspect the Valve: Regular inspection is necessary to check for any leaks or corrosion in the valve body, spring, and diaphragm assembly. Look for any signs of physical damage such as cracks, dents, or deformations in the valve. Check the valve seat for wear or damage and clean any debris or rust buildup.
    • Test the Valve: Test the valve to ensure that it is functioning correctly. To test, remove the bonnet and test the valve's opening and closing pressure.
    • Ensure that the valve is properly set to the required pressure.
    • Lubricate the Valve: Lubricate the valve to ensure smooth operation. Use a recommended lubricant, and apply it sparingly to avoid excess buildup.
    • Check the Valve Connections: Check the valve connections, including the flanges, bolts, and nuts. Ensure that all connections are tight and properly sealed.
    • Replace Worn Parts: Replace any worn or damaged parts such as the valve seat, spring, or diaphragm assembly.
    • Clean the Valve: Clean the valve periodically to remove any dirt or debris buildup. Use a recommended cleaning solution, and follow the manufacturer's instructions.
    • Record Maintenance: Keep a record of all maintenance activities, including inspections, tests, and repairs. This record will help you track the valve's performance and identify any recurring issues.

    Regular maintenance of a steam pressure reducing valve is crucial to ensure its safe and efficient operation. Follow the manufacturer's recommendations for maintenance and consult a professional if you encounter any issues.

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