We are committed to providing the best products in the world for testing fire pumps and fire hydrants.  We are focused on providing solutions that help save lives and property by verifying fire protection systems perform when a fire occurs.  We offer products that are safe, accurate, and simple to use.   We attain the industry’s highest certification and approval for the products we offer, and we support our products with knowledgeable and responsive customer service.


We are dedicated to producing the highest quality products available that are the longest lasting and most robust in the industry.


Our customer service team is dedicated to providing timely, responsive service with integrity, simplicity and a passion for excellence while meeting or exceeding our customer’s expectations,


Above all, safety is our number one driving factor. Our products ensure that personnel are kept away from water discharge and that the water is controlled.



  • Fire Protection Contractors
  • Fire Departments
  • Municipalities
  • Public Works & Water Departments
  • Oil & Natural Gas Refineries
  • Nuclear & Hydro Electric Plants
  • Industrial Manufacturing
  • State & Federal Governments
  • Military

Exceeding standards and driving innovation for over 20 years

In 1993 Fred Grenning and Phil Barrett teamed up to create and market our flagship product, the Hose Monster®. The Hose Monster changed the way fire pump testing and hydrant flow testing was done. For the first time a user could accurately and consistently measure flow-rates while minimizing property damage and traffic interference. Hydro Flow Products, Inc. was formed to market and distribute the Hose Monster line of products and since then has continued to create innovative flow testing solutions for the fire protection and waterworks industries. The “Hose Monster Company” name was introduced in 2015 as a division of Hydro Flow Products.

Since our founding, we maintain our tradition of excellence by understanding the industries in which our clients operate. This has allowed us to turn our expertise into clear advice and sound solutions that meet the challenges in fire flow testing, fire pump testing, standpipe testing, main flushing, apparatus testing and dechlorination.

In 2007, we revolutionized the industry again with the development of Pitotless Technology™; first introduced with the release of the Pitotless Nozzle™. The industry wide acclaim of the Pitotless Nozzle™ led to Pitotless Technology™ being incorporated across the Hose Monster product line, and in 2013 into the In-Line Pitotless Nozzle™.

Pitotless Technology has led to unsurpassed accuracy, reliability and efficiency that has exceeded industry standards. It has also allowed for tremendous improvements on the Original Hose Monster with the compact and lightweight Little Hose Monster™ and BigBoy Hose Monster™. These advances led the Hose Monster line of equipment to become the industry standard and the preferred choice of leading authorities across the world. We continue to invest in new technologies to assure that new advances will benefit the industries we serve.