Got Big Water

YouTube Channel

Facebook Page

Twitter Page

Rural Water Supply Operations Seminar
Rural Water Supply Operations Seminar

Water Supply Officer Seminar
Water Supply Officer Seminar

Relay Pumping With Large Diameter Hose
Relay Pumping With Large Diameter Hose

Dry Fire Hydrant Designs and Installations
Dry Fire Hydrant Designs and Installations

Suction Strainer Flow Test Project:Test Results

Web Counters
Website Visitors
June 22, 2009
Visitors Today
Jan 16, 2021

Official PayPal Seal
Dry Fire Hydrant Design 28 - Connection Stress
Email Print RSS Facebook Twitter RSS

By President Mark Davis
May 28, 2020

One of the common issues with dry fire hydrant design and installation is creating too much suspension of the suction hose when the pumper is connected to the dry fire hydrant. Ideally, suction hose should have at least one point of ground contact while the pumper is drafting. This point of contact takes some of the load off of the suction hose coupling which can be prone to leaking...especially when using lightweight suction hose.

Contributing to this problem can be the design of the dry fire hydrant. The "white" DFH shown in this news story is a bad design in terms of creating stress on the DFH fitting and the suction hose coupling. The actual suction head is located at the end of a big lever. The weight of the connection once the hose is filled with water places enough stress on the coupling to cause an air leak that in turn affects drafting. We are pretty sure that the DFH was built with good intentions; however, not with the best design.

The better choice when deciding to use a 90-degree piping set up is to use a 90-degree suction head as shown on the "yellow" DFH shown in the other photo. The 90-degree suction head provides a much more sturdy connection and thus, should reduce the opportunity for an air leak. In addition, the lower the suction head is located to the ground, the less the load placed on the fitting when the suction hose is connected.

Add a Comment Add a Comment 0 Comment(s)

Website Designed and Hosted By: Content Proudly Maintained By: Contact Info:
Firehouse Solutions
GBW Associates, LLC
3178 Cardinal Drive
Westminster, MD 21157

Emergency Dial 911
Phone: 443-398-6619
Copyright © 2021 Firehouse Solutions (A Service of Technology Reflections, Inc.)