By Alan M. Petrillo
Ultra-high-pressure (UHP) pumping systems have been around for a while but are attracting more attention recently in using their higher pressure to extinguish flammable liquid fires; wildfires; and, in some cases, even fires such as room-and-contents fires.
Offerings
Ryan Darley, international sales manager for W.S. Darley Co., says Darley makes an ultra-high-pressure-high-volume (UHP-HV) pump that has proven popular for wildland and rescue truck use in the United States, as well as in New Zealand and South Africa. “It’s two pumps driven off of one engine, plus Class A or B foam,” Darley says. “The Model 2BE-23V has a UHP side running at eight gallons per minute (gpm) at 1,300 pounds per square inch (psi) driven by a 23-horsepower (hp) Vanguard gasoline engine driving a CAT 7CP high-pressure piston pump with foam injection, typically through a ½-inch-diameter hoseline. The system also is available with a 24-hp Kubota diesel engine.”
![1 These two Darley-built UHP pumping systems were ordered by a fire department in South Africa. (Photo courtesy of W.S. Darley & Co.) 2 Darley makes the 2BE-23V UHP pump running at eight gpm at 1,300 psi that’s driven by a 23-hp Vanguard gasoline engine. Darley also makes the 2BE that’s driven by a Kubota 24-hp diesel engine. (Photo courtesy of W.S. Darley & Co](/content/dam/fa/print-articles/volume-21/issue-10/1610FA_PetrilloUHP1.jpg) |
1 These two Darley-built UHP pumping systems were ordered by a fire department in South Africa. (Photo courtesy of W.S. Darley & Co.) |
Bill Carroll, general manager of HMA Fire, says HMA has been shifting its focus from military and government sales to municipal fire departments “now that National Fire Protection Association (NFPA) 1901, Standard for Automotive Fire Apparatus (2016 ed.), and NFPA 1906, Standard for Wildland Fire Apparatus (2016 ed.), have UHP sections in them.” He notes that one of HMA’s UHP units is going on a rapid response vehicle (RRV) built on a Ford F-550 chassis with super single tires manufactured by Pierce Manufacturing for the Middleton (WI) Fire Department with a 300-gallon water tank and 30-gpm bumper turret. “Instead of a skid unit, it’s coming off the live-drive power takeoff (PTO) that allows pump and roll. The system will pump 30 gpm at 1,300 psi,” Carroll says.
Carroll points out that HMA Fire has built 30-, 60-, and 90-gpm UHP skid unit systems using Waterous and Hale centrifugal pumps. “We build a 90-gpm system at 1,300 psi that will supply a 70-gpm bumper turret and a 20-gpm handline simultaneously,” he adds. “But the 20-gpm UHP is our most commonly used system. It can fit in the back of a pickup truck or be fitted into a small rescue.”
![1 These two Darley-built UHP pumping systems were ordered by a fire department in South Africa. (Photo courtesy of W.S. Darley & Co.) 2 Darley makes the 2BE-23V UHP pump running at eight gpm at 1,300 psi that’s driven by a 23-hp Vanguard gasoline engine. Darley also makes the 2BE that’s driven by a Kubota 24-hp diesel engine. (Photo courtesy of W.S. Darley & Co](/content/dam/fa/print-articles/volume-21/issue-10/1610FA_PetrilloUHP2.jpg) |
2 Darley makes the 2BE-23V UHP pump running at eight gpm at 1,300 psi that’s driven by a 23-hp Vanguard gasoline engine. Darley also makes the 2BE that’s driven by a Kubota 24-hp diesel engine. (Photo courtesy of W.S. Darley & Co.) |
Kevin Quinn, president and owner of E.J. Metals, says his company makes UHP systems i