Go to content Go to main menu

Fire Hydrant Backflow Meter

They are designed to measure a wide variety of cold potable water flows from fire hydrants where flows are in one direction.

FHD[nbsp]Meters are light weight portable units designed for temporary installations. The built-in dual check valves help provide a practical solution to help prevent backflow into the primary water source. The RPZ (Reduced Pressure Zone) Dump Valve allows this assembly to dump to atmosphere when the check valves are fouled.

OPERATION:
Water flows through the turbine section causing the rotor to turn proportionately to the quantity of water flowing through the meter. A drive magnet transmits the motion of the rotor to a driven magnet located within the hermetically sealed register. The magnet is connected to a gear train which translates the rotations into volume totalization displayed on the register dial face.

CONSTRUCTION:
FHD Hydrant Meters consist of several basic components: light weight aluminum main case, turbine type measuring element assembly, sealed register, aluminum cover plate, stainless steel hardware, brass lid assembly, aluminum or brass swivel and nipple, aluminum or stainless steel handles, front and rear 3” check valves, RPZ Dump Valve and adjustable support stand. The measuring element assembly includes the rotor assembly, vertical shaft and a calibration vane which eliminates the need for calibration change gears.

MAINTENANCE:
FHD Meters are engineered and manufactured to provide long-term service and operate virtually maintenance free. If maintenance is necessary the measuring element can be removed from the main case. The 3” Check Valves and RPZ can be easily serviced.

COMPLIANCE:
FHD Hydrant Meters are tested and comply with AWWA C701 Class II performance standards.

STRAINERS:
FHD Hydrant Meters come with a built-in 54 square inch strainer after the first check valve and in front of the Turbine Measuring Element.

CONNECTIONS:
FHD Meters are typically configured with bronze fire hose connections, although aluminum connections are available.

OPTIONS:
Locking devices, special order connections, pistol grip handles, swivel with stainless steel strainer.

3” Model FHD30S**-RP
U.S.A. Patent No. US 6363782 B1
U.S.A. Patent No. D560,132

Show more

Product images

Fire Hydrant Backflow Meter
Fire Hydrant Backflow MeterFire Hydrant Backflow MeterFire Hydrant Backflow Meter

Information

Fire Hydrant Backflow Meter
Downloads

Features

Fire Hydrant Backflow Meters, with built-in dual check valves and RPZ dump valve. They are designed to measure a wide variety of cold potable water flows from fire hydrants where flows are in one direction.

Product options

Housing Material
  • Aluminum
Length (Inches)
  • 27"
Maximum Temperature (°F)
  • Water up to 140° F
Maximum Working Pressure
  • P.S.I. 175
Nominal Diameter (inch)
  • 3"

Downloads

You can download a PDF Viewer from acrobat.adobe.com to view PDF files.

Other ZENNER products

Discover other interesting products in our product range.

Product imagePERFORMANCE Fire Hydrant MetersPERFORMANCE Fire Hydrant Meters
PERFORMANCE Fire Hydrant Meters
Fire Hydrant Meters from ZENNER PERFORMANCE are designed to measure a wide variety of cold potable water flows from fire hydrants where flows are in one direction.
Product imagePERFORMANCE High Flow Fire Hydrant MetersPERFORMANCE High Flow Fire Hydrant Meters
PERFORMANCE High Flow Fire Hydrant Meters
ZENNER PERFORMANCE High Flow Hydrant Meters are light weight portable units. They are designed to measure a wide variety of cold potable water flows from fire hydrants where flows are in one direction.