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    400系列安全調節閥

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    產品名稱: 400系列安全調節閥
    產品型號: 400系列安全調節閥
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    簡單介紹

    400系列安全調節閥 400系列調節閥與非流動試點,采用了先進的中試閥的設計。工藝條件下,無論是飛行員和主閥擰緊,以高達百分之98的設定壓力。

    400系列安全調節閥的詳細介紹

    400系列安全調節閥
    400系列調節閥與非流動試點,采用了先進的中試閥的設計。工藝條件下,無論是飛行員和主閥擰緊,以高達百分之98的設定壓力。

    Series 400 Modulating Safety Relief Valve

    • Description
    • Specifications
    • Documentation
    Anderson Greenwood Pressure Relief Valves, Pilot Operated Valves, Modulating, Anderson Greenwood Series 400 Modulating Safety Relief Valve (POPRV)

    The Series 400 modulating valve, with non-flowing pilot, incorporates an advanced design in pilot operated valves. Under process conditions, both pilot and main valve can be tight to as high as 98 percent of set pressure. The main valve lifts proportionally according to demand, restricting product loss to only what needs to be relieved to prevent process pressure from exceeding the code allowance.

    The Series 400 valve is well suited for gas and/or liquid services, including dirty and/or wet services. The modulating action is strongly preferred for liquid relief because it eliminates the destructive effects of “liquid hammer.”

    Features & Benefits:

    • Unique Field Test Capability – Allows accurate set pressure verification with valve in service. No system isolation valve or rupture disc required. All field test connections are provided with an indicator for accurate and easy set pressure testing.
    • Reduced Product Loss and Pollution – Soft seats for premium tightness before and after relief cycles. Modulating action relieves minimum product to prevent overpressur.
    • ASME Section VIII Code Stamp – Certified National Board capacities for both gas and liquid service assures user of independent third party flow rate verification. 
    • Non-flowing Pilot – Minimizes entrance of dirt and formation of hydrates in pilot. Due to low velocities within the pilot and supply tubing, most particles will drop out upstream of pilot inlet screen. Optional cartridge type pilot filter is available for extremely dirty services.
    • Rugged Bracket Pilot Mounting – Extremely rigid mounting protecting against vibration and careless handling. Shake table proven.
    • Reduced Noise – Modulating action minimizes flow and resultant noise during normal system upset, reducing noise abatement costs. 
    • Increased System Output – Because of valve tightness to 98 percent of set pressure, the system can be operated nearer set pressure without valve leakage, resulting in greater system throughput.
    • Reduced Maintenance Costs – Soft seats greatly extend service life, making costly and time-consuming metal seat lapping unnecessary.
    • Ease of Adjustment – Single adjustment for set pressure allows accurate and dependable setting.
    • Balanced Design – Proper valve operation and lift are unaffected by back pressure. Costly and fragile metal bellows are not required.
    Specifications

    Orifice Sizes: D through T, Full bore valves also available
    Connections: 1" x 2" to 8" x 10"
    Inlet Flange Ratings: ANSI 150, 300, 600, 900, 1500, 2500
    Temperature Range: -65°F to +500°F [-54°C to +260°C]
    Minimum Pressure: 15 psig [1.03 barg]
    Maximum Pressure: 1,480 psig [102 barg]



     
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