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Anti-Vortex Plate According to NFPA 20 & 22

Anti-Vortex Plate According to NFPA 20 & 22

Anti-Vortex Plate According to NFPA 20 & 22
Anti Vortex Plate According to NFPA 20 & 22

When to install "Anti-Vortex Plate"?:

  • Where a tank is used as the suction source for a fire pump, the discharge outlet of the tank shall be equipped with an assembly that controls vortex flow.

Purpose of using "Anti-Vortex Plate"?:

  • Anti-Vortex plate is installed in the suction line of fire pumps to control the turbulence in a flowing water, They are simple in design and very effectively controlling the velocity of the fluid thus preventing cavitation to fire pumps and damage to impellers.
Dimensions of "Anti-Vortex Plate"?:

  • The assembly shall consist of a horizontal steel plate that is at least twice the diameter of the outlet on an elbow fitting.
  • Large, standard size anti-vortex plates [48 in. X 48 in. (1219 mm × 1219 mm)] are most common and are desirable, as they are adequate for all sizes of fire protection pump suction pipes normally used.

Installation dimensions:

  • Mounted at the outlet a distance above the bottom of the tank equal to one-half the diameter of the discharge pipe or 152mm whichever is greater.

Anti-Vortex Plate Inspection:

  • Inspection of anti-vortex plate shall be after completion of the tank construction, and before filling the tank with water.
  • The inspection shall verify that the horizontal steel plate and long radius elbow are installed properly and meet the requirements of dimensions and installation height mentioned above.

Below are illustration for installation of anti-vortex plate for various types of tanks according to NFPA 22 (Standard for water tanks for private fire protection):



Anti-Vortex Plate
Anti-Vortex Plate


Anti-Vortex Plate
Anti-Vortex Plate


Anti-Vortex Plate
Anti-Vortex Plate


References of this article:

- NFPA 20 (Standard for the installation of stationary pumps for fire protection)
- NFPA 22 (Standard for water tanks for private fire protection)


Anti-Vortex Plate According to NFPA 20 & 22
Fire Protection Specialists
Keeping You Up To Code

18 comments:

  1. Hwo much this item antivortex plate

    ReplyDelete
    Replies
    1. It depends on your location, if in Egypt or gulf area, contact via: info@fps-eg.com

      Delete
  2. Wow, cool post. I'd like to write like this too - taking time and real hard work to make a great article... but I put things off too much and never seem to get started. Thanks though. nagapoker

    ReplyDelete
  3. فنحن نقوم بكافة أعمال التنظيف للشقق والفلل والقصور نعمل على تنظيف كافة المنزل بداية من الأرضيات سواء كانت بلاط أو سراميك أو رخام و أيضا نقوم بتنظيف فرش الأرضيات سواء موكيت أو سجاد بأكثر من طريقة سواء باستخدام البخار أو بجهاز الرغوة الالية أو باستخدام الفرشاة الاليه. كما نقوم بتنظيف الأثاث بأجود المواد التي لا تؤثر على درجة الالوان أو حالة الأخشاب كما نقوم بتلميع الزجاج ممها بلغ ارتفاعة.

    شركة غسيل موكيت بابها
    شركة عزل خزانات بابها
    شركة تنظيف خزانات المياه بابها
    شركة تنظيف كنب بابها
    شركة رش مبيدات بابها
    شركة رش مبيدات بابها
    شركة مكافحة الحشرات بابها

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  4. This comment has been removed by the author.

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  5. How effective is anti vortex plate when suction is on side wall of thank?

    In such case is anti vortex plate required?

    When suction is on side wall, does vortex get created?

    ReplyDelete
  6. Thank you for your effort, more power to you

    ReplyDelete