ZENNER FHZD Fire Hydrant Backflow Meter 3" Register Gallon FHZ03-REG

Description:

The Zenner FHZD Fire Hydrant Backflow Meter 3" (FHZ03-REG) is used in municipal and industrial water systems to measure water usage directly from fire hydrants while preventing contamination of the primary water supply. Commonly installed for temporary water access in construction, irrigation, and utility applications, this unit integrates a turbine meter with a reduced pressure zone (RPZ) backflow preventer. Maintenance teams and municipalities use this meter for accurate water usage tracking, billing, and ensuring safe backflow prevention in potable water systems.

Applications:

The Zenner FHZD meter is widely used in environments requiring temporary metered water access with backflow protection. It is commonly found in construction sites, municipal water departments, irrigation systems, and industrial water usage scenarios where monitoring flow and preventing contamination are critical.

Technical Specifications:

• Manufacturer Part Number (MPN): FHZ03-REG
• Product type: Fire hydrant backflow meter (turbine type)
• Size: 3 inch
• Measurement type: Turbine flow meter with mechanical register
• Register: Gallon totalization display
• Maximum continuous flow: ~450 GPM
• Maximum intermittent flow: ~650 GPM
• Minimum flow rate: ~2.5 GPM
• Maximum working pressure: 175 PSI
• Maximum temperature: 140°F
• Backflow protection: Dual check valves with RPZ dump valve
• Construction: Aluminum body with stainless steel hardware and turbine measuring element
• Installation: Portable, hydrant-mounted temporary setup
• Compliance: Meets AWWA C701 standards, NSF/ANSI 61 & 372

Common Replacements:

• Zenner FHZ series hydrant meters (non-backflow variants)
• Zenner FHZP performance hydrant meters
• Other 3" turbine hydrant meters with RPZ backflow assemblies