Why register? ...To Enhance Your Experience
+ Reply to Thread
Page 2 of 2 FirstFirst 12
Results 21 to 29 of 29
  1. #21
    Let's talk fire trucks! BoxAlarm187's Avatar
    Join Date
    Jan 2003
    Location
    Virginia
    Posts
    3,283

    Default

    Quote Originally Posted by Saltspringfire View Post
    How do you switch between your on board tank and porta-tank if you do not have a MIV on your engine?
    Are you referring specifically to the Hale MIV, or any gated suction at all?

    It's easily accomplished, assuming that you have a butterfly valve on the suction inlet. Simply slowly (over a 15-30 second time frame) close the tank-to-pump while at the same time, and at the same speed, open the butterfly valve, and the suction will be drawn. We teach this to our students as a way to pull a draft (assuming you have tank water) in case the primer does't work.

    Now, if you're just hooking the suction hose directly onto the threaded suction inlet with no valve, that's going to be a lot more difficult.

    Why not use dual 3" hard suction thru 2 1/2" inlets? You can open and close as you need run single or double depending on water level and availability.
    No reason you can't per se. We just prefer to not have any restrictions on flow, such as smaller intakes, smaller plumbing, and the inherent FL that occurs with the plumbing and elbows needed to reach the impeller and/or pump manifold, depending on your pump manufacturer.
    Career Fire Captain
    Volunteer Chief Officer


    Never taking for granted that I'm privileged enough to have the greatest job in the world!


  2. #22
    MembersZone Subscriber
    Join Date
    Jan 2007
    Location
    Pa Wilds
    Posts
    581

    Default

    When working out of the apparatus tank, proceed as follows: Fill the drop tank and put the hard sleeve with the strainer into the tank. Have the P.O. set the governor in rpm if so equipped. Have 2 men on the hard sleeve and one to take the steamer cap off the engine. The other two will quickly apply the suction to the steamer. Yell to the P.O. and have him open the Tank to Pump while pulling on the primer valve. Don't change the rpm and stay on the primer until you get a hard prime back. It is best to have the attack crew in a safe place before you try a "flying" hook-up. Refill the apparatus tank for your safety.

    Switching from drop tank back to the apparatus tank as follows: The end of the suction can be kept under water, and the strainer removed. Then screw the steamer cap on the suction tube while still under water.

  3. #23
    MembersZone Subscriber Saltspringfire's Avatar
    Join Date
    Feb 2003
    Posts
    52

    Default

    Quote Originally Posted by BoxAlarm187 View Post
    Are you referring specifically to the Hale MIV, or any gated suction at all?

    It's easily accomplished, assuming that you have a butterfly valve on the suction inlet. Simply slowly (over a 15-30 second time frame) close the tank-to-pump while at the same time, and at the same speed, open the butterfly valve, and the suction will be drawn. We teach this to our students as a way to pull a draft (assuming you have tank water) in case the primer does't work.

    Now, if you're just hooking the suction hose directly onto the threaded suction inlet with no valve, that's going to be a lot more difficult.
    We don't currently have any valve on our header cap so ya, we've have to switch on the fly like Kuhshise described... a little tuff while you have to guarantee 250 gpm for the test.

    Has anyone tried an automatic suction valve?

    http://www.edarley.com/automatic-suction-valve.html

    Or is there something better out there? We either need to go back to the drawing board and look at dual 2 1/2 hard suction or buy a 6" valve.

    Our newest engine has an MIV with an air primer to the outside of the valve, but unfortunatley, it's not the draft engine at this location.
    "We accept great personal risk to save another person's life; We accept moderate personal risk to save another persons property; We accept no personal risk to save what is already lost"

    Visit us on the web @ www.saltspringfire.com

  4. #24
    Forum Member
    Join Date
    Dec 2006
    Posts
    72

    Default ISO Slayer

    Larry Davis was agreat resource on water supply operations. His book http://www.rfi411.org/book_store.html should be mandatory reading for all in rural water operations..... Enjoy
    David

  5. #25
    MembersZone Subscriber
    Join Date
    Dec 2002
    Location
    Rural Iowa
    Posts
    3,106

    Default

    Quote Originally Posted by Saltspringfire View Post
    Has anyone tried an automatic suction valve?
    .
    Yes work great. Otherwise known at a Hydrashield Precon valve. Obvoiusly can get a better deal from local dealer than from edarley.

  6. #26
    MembersZone Subscriber
    Join Date
    Apr 2009
    Location
    SW Missouri
    Posts
    1,153

    Default

    Quote Originally Posted by neiowa View Post
    Yes work great. Otherwise known at a Hydrashield Precon valve. Obvoiusly can get a better deal from local dealer than from edarley.
    The major drawback of a precon is the loss of GPM's because of the size reduction because of how they are made (when drafting). If your not going to need to pump capacity then a precon is a good tool. If a large amount of water is needed you either take off the precon or use two intakes.

    As with any intake valve ask the dealer what it will do on the draft. Sure it can flow 1500 gpm, but can it draft that much?

  7. #27
    MembersZone Subscriber
    Join Date
    Jan 2007
    Location
    Pa Wilds
    Posts
    581

    Default

    Saltspring: One of our MA companies recently purchased a rear suction engine with a butterfly valve right at the pump. They also spec'd a separate primer that runs to the high point in the rear suction line. When ready to take water from the drop tank behind the engine, they simply operate the rear primer, fill the suction and then operate the valve on the rear suction line. No loss of water at all.

  8. #28
    Forum Member
    Join Date
    Mar 2011
    Posts
    4

    Default 6inch Barrel Strainer Fix

    A quick easy fix for a 6inch barrel strainer when no low level strainer is around - Cut a piece of inner tube from the average car/pick up truck tube that measures 10inches wide and the same length as the barrel strainer you're using. after connecting your hardsleeve and strainer to the engine, lay the cut piece of tube on top of your strainer and hold in place with rubber bands. this will still allow a good flow of water into the strainer and it's not drawing from the top side. Real easy, real quick.

  9. #29
    Forum Member EastKyFF's Avatar
    Join Date
    Feb 2001
    Posts
    3,063

    Default

    Quote Originally Posted by Saltspringfire View Post
    Timely thread...

    Last night we were practising for our Tender Shuttle Accreditation and we ran in to a problem with using 6" suction.

    How do you switch between your on board tank and porta-tank if you do not have a MIV on your engine?

    Why not use dual 3" hard suction thru 2 1/2" inlets? You can open and close as you need run single or double depending on water level and availability.

    Any other suggestions?
    That's about all you can do other than investing in a big fat keystone valve, an item I swear by. We just used it yesterday morning on a mutual aid structure fire.

    Ya gotta have a valve on it.
    "Be polite, be professional, but have a plan to kill everybody you meet.Ē
    --General James Mattis, USMC


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. To my fellow Union members
    By MIKEYLIKESIT in forum Illinois
    Replies: 11
    Last Post: 04-05-2006, 07:51 PM
  2. No Stop, Drop and Roll???
    By mattcvt in forum The Off Duty Forums
    Replies: 0
    Last Post: 03-08-2006, 04:52 PM
  3. 1st Due Engine-To Drop or not to Drop (Supply Hose)
    By MG3610 in forum Firefighters Forum
    Replies: 15
    Last Post: 06-03-2004, 12:52 AM
  4. Drop Tank Ops.
    By jab1415 in forum Fireground Tactics
    Replies: 19
    Last Post: 05-21-2001, 01:43 PM
  5. RFP's
    By D Littrell in forum Apparatus Innovation
    Replies: 1
    Last Post: 09-08-2000, 06:36 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts