Model DQF Electric Actuated Ball Valve

  • Product Description

  • Product Model

  • Technical Parameters

  • Product Description:

    ·  Model DQF electric actuated ball valve is a globe valve to be opened and closed by the electric actuator and it is suitable to bidirectional flow. Model DQF electric actuated ball valve is a straight through type valve and it could provide the maximum flow rate when the ball valve is in full open.

    ·  Model DQF electric actuated ball valve is a flanged electric floating ball valve.

    ·  The dimension of the flanges on the both ends of Model DQF electric actuated ball valve are compliance with JB/T79 and GB 9113 standard dimension for convenient installation. The valve is designed and manufactured in accordance with the national standard GB 12237-1989 “General Valves-Flanged and But-Welded Steel Ball Valves”. The structural length of the ball valve is in compliance with the national standard GB 12221 “Metallic Valves-Structural Length”.

    ·  Model DQF electric actuated ball valve is used on the liquid, air suction and hot vapor pipes of the cold storage, refrigeration and air conditioning facilities.

    ·  The downward mounted valve stem and the raised steps on the head of the valve stem could prevent the valve stem from spurting. If the valve stem seal is damaged in fire, the sealing of the valve stem is assured by the metallic contact between the raised step and the valve body.


  • Product Model:



  • Technical Parameters:

    Applicable Refrigerant: HCFC/HFC
    Applicable Medium Temperature: -40~+150℃
    Maximum Operating Pressure: 2.5MPa
    Maximum Proof Pressure: 3.8MPa
    Annual Refrigerant Leakage: ≤5g R22/a
    Power Supply AC 220V




    1、valve body; 2、vlve seat; 3、valve ball; 4、hexagonal nut; 5、stud; 6、bonnet; 7、protective cap; 8、gasket; 9、hexagonal bolt; 10、valve stem; 11、seal gasket; 12、bottom packing; 13、middle packing; 14、top packing; 15、electric actuator; 16、flat gasket; 17、bolt; 18、adapter sleve; 19、pressing plate;


    Nominal Bore(mm) DN40 DN50 DN65 DN80 DN100 DN125
    ΦA(mm) Φ145 Φ165 Φ180 Φ200 Φ235 Φ270
    ΦB(mm) Φ92 Φ104 Φ126 Φ142 Φ168 Φ194
    C(mm) 15 15 15 24 24 26
    ΦD(mm) Φ110 Φ125 Φ145 Φ160 Φ190 Φ220
    ΦE(mm) Φ18 Φ18 Φ18 Φ18 Φ22 Φ26
    F(mm) 195 195 256 256 256 256
    H(mm) 195 195 398 398 420 438
    L(mm) 180 200 251 251 305 381
    N 4 4 4 4 8 8
    Mating Actuator Model KST-05 KST-05 KST-10 KST-10 KST-20 KST-40


    Installation Guide:

    1. Remove the protective caps on the both ends of the flange and wash and clean the valve in its full open condition.

    2. Before installation of the valve, the complete unit shall be tested in accordance with the specification to prevent any possible abnormal caused by vibration during transportation. Only the test result is qualified, it is allowed to install the valve the pipe system and the wiring shall be in compliance with the wiring diagram of the electric actuator.

    3. The electric actuated ball valve shall be installed in vertical and both inlet and outlet of the valve shall be on the horizontal position.

    4. Install the seal gasket between the ball valve flange and the pipe flange in accordance with the design requirements.

    5. The bolts on the flange shall be tightened evenly in sequence and in symmetry.

    6. Install the power supply in accordance with the Operation Installations of the electric actuator. During its operation, always keep the cover of the electric actuator positioned and the screws tightened. It should clean the surface of the electric actuator periodically and prevent water and oil spilling.


    Inspection:

    1. After the installation is completed, it should make a trial to open and close the ball valve several times with a flexible action and uniform stress for a normal operation of the ball valve.

    2. According to the design pressure requirement, apply the test pressure in the pipe system to check the sealing condition on the interface between the ball valve and the pipe flanges.


    Maintenance:

    1. It is allowed to dismount and disassemble the ball vale only when the pressure before and after the ball valve has been released.

    2. During disassembly and re-assembly of the ball valve, it should protect the sealing parts and especially the non-metallic pars. The special tools are preferable to avoid the parts to be damaged.

    3. When re-assembly of the valve body of the ball valve, it should tighten the bolts evenly in sequence and in symmetry.

    4. The detergent must be compatible to the rubber parts, plastic parts, metallic parts and working medium in the ball valve.

    5. After disassembly of the ball valve, it is allowed to clean the individual parts by immersion. For the non-metallic parts and metallic parts which are not disassembled from the ball valve, it is allowed to use clean fluff-free cloth to dip detergent to clean the parts so that no fiber is liable to the parts. It should clean the part surface to remove any oil, grease, dirt, adhesive or dust.

    6. After washing, it should take the clean non-metallic parts from the detergent immediately and any extended immersion is not allowed.

    7. After washing, it should allow the parts surface detergent to be volatilized completely or use clean fluff-free cloth to wipe dry. It is not allowed to leave the clean parts aside for a long time and otherwise the parts might be rusted or dust contaminated.

    8. It should wash and clean the new parts before its assembly.

    9. During assembly, no metallic filing, fiber, oil and grease (excluding those permitted under specification), dust of other impurities or foreign matters to contaminate or adhere to the part surface or inside cavity.


    Gautions:

    1. The ambient temperature should be controlled within -25℃~+70℃.

    The ambient humidity: ≤95%RH.

    2. It is not allowed to disassemble the electric operated mechanism by user himself in case of the failure to avoid any unexpected accident because the electric operated mechanism is quite complicated.

    3. Whenever it is not allowed to strike the electric actuated ball valve or place the ball with other articles together.


    Profile Diagram of Electric Actuator:


    1、case body; 2、open meter; 3、wire-in wire lock; 4、handle shaft rubber cover; 5、No-bracket installation; 6、deceleration cover; 7、electric cover; 8、wiring cover; 9、handle-axle hole; 10、output shaft; 11、Adapter sleeve


    Features:


    1. Small volume, light weight, reliable performance, simple mating and high flow capacity.

    2. When the electric actuator carries the valve stem to rotate 90°, it will operate the valve from full open to full close.

    3. The drive parts of the electric actuator is made of high quality steel with perfect heat treatment so that the actuator will open and close the valve flexibly, safely and reliably with a long service life. The rotating positioning is accurate.

    4. The mark on the electric actuator top will indicate the valve in full open or full close.

    5. The bidirectional flow mode means the installation of the valve is independent of the flow direction of the fluid inside the pipe.

    6. The downward mounted valve stem and the raised steps on the head of the valve stem could prevent the valve stem from spurting. If the valve stem seal is damaged in fire, the sealing of the valve stem is assured by the metallic contact between the raised step and the valve body.

    7. Both valve seat and the packing are made of modified Teflon so that the ball valve is suitable to a wide working temperature. The modified Teflon has perfect self-lubrication performance and little friction with the steel ball, therefore, the electric actuated ball valve shall have a long service life.

    8. The valve seat has perfect sealing performance. The seal ring is made of elastic material such as Teflon so that the sealed structure is assured. In addition, the sealing ability of the ball valve enhanced along with the increased medium pressure.

    9. The valve stem sealing is reliable. The valve stem will be rotary inly without up-and-down movement to that it is not liable to damage the packing seal of the valve stem. In addition, the sealing ability is enhanced along with the increased medium pressure.

    10. The enclosure of the actuator is made of die casting aluminum alloy which will reduce the electromagnetic interference. The integrated design of the worm gear output shaft is made of special forged copper alloy with high strength and perfect wear resistance. It will minimize the gap of the key joint and improve the transmission accuracy.

    11. The actuator is double position limited with overheat protection, overload protection, free of oiling, free of spot check, waterproof and rust prevention.

    12. There is a direct connection between the ball valve and the actuator so that it is simple and easy operated. The actuator has a number of advantages such as simple wiring, compact structure, small size, light weight, little drag, stable action and reliable performance.

    13. The actuator uses passive contact and AC220V power supply with simple external wiring. The actuator has passed AC2000V high voltage withstanding testing and equipped with F class insulated motor for a safeguard operation.