LDH Appliances #03 - Creativity Used When Adding a Pumper to a Relay Pumping Operation
 
By President Mark Davis
February 8, 2018
 

During our relay pumping/LDH seminar last May in Shelby County, Alabama, we came across an interesting use of a 5" jumbo wye and a 5" double-clappered siamese. The use of the two appliances occurred during the relay pumping drill where 2,200-ft of 5-inch hose was deployed in an effort to practice adding pumpers to a long hose lay. There were no in-line relay valves available for use so one group of folks decided to use a jumbo wye, a siamese, and a short length of length of 5-inch LDH to create their own "in-line" set-up to allow a 1500 gpm pumper to be added to the middle of the long hose lay.

The idea worked just fine and the pumper was able to increase supply pressure and output to the operation without interrupting water flow. You have heard us say this many times, if you use LDH then it is important to have plenty of adaptors and plenty of appliances so that most any water supply matter can be addressed in little time.
 
A pretty simple setup.
A pretty simple setup.
This arrangement of appliances was deployed prior to the pumper arriving at the in-line location. This action is probably not practical on an initial hose lay, but if this was being done to support an existing operation, then it certainly would work.
This arrangement of appliances was deployed prior to the pumper arriving at the in-line location. This action is probably not practical on an initial hose lay, but if this was being done to support an existing operation, then it certainly would work.
 
The switch-over was seamless.
The switch-over was seamless.