M170
Recordall® Disc Meters
Model 170, Lead-Free Bronze Alloy, Size 2" (DN 50 mm)
NSF/ANSI Standards 61 and 372 Certied
DESCRIPTION
The Recordall Model 170 Disc Series meters meet or exceed the most
recent revision of AWWA Standard C700 and are available in a leadfree bronze alloy. The Model 170 meters comply with the lead-free
provisions of the Safe Drinking Water Act, are certified to NSF/ANSI
Standards 61 and 372 (Trade Designation: M170-LL) and carry the
NSF-61 mark on the housing. All components of the lead-free bronze
alloy meter (housing, measuring element, seals, and so on) comprise
the certified system.
Applications: For use in measurement of potable cold water in
residential, commercial and industrial services where flow is in one
direction only.
Operation: Water flows through the meter’s strainer and into the measuring
chamber where it causes the disc to nutate. The disc, which moves freely,
nutates on its own ball, guided by a thrust roller. A drive magnet transmits
the motion of the disc to a follower magnet located within the permanently
sealed register. The follower magnet is connected to the register gear train.
The gear train reduces the disc nutations into volume totalization units
displayed on the register or encoder face.
Operating Performance: The Recordall Disc Series meters meet or exceed
registration accuracy for the low flow rates (95%), normal operating flow
rates (100 ± 1.5%), and maximum continuous operation flow rates as
specifically stated in AWWA Standard C700.
Construction: Recordall Disc meter construction, which complies with
ANSI/AWWA standard C700, consists of three basic components: meter
housing, measuring chamber, and permanently sealed register. The water
meter is available in a lead-free bronze alloy with externally-threaded
spuds. A corrosion-resistant engineered polymer material is used for the
measuring chamber.
Magnetic Drive: Direct magnetic drive, through the use of high-strength
magnets, provides positive, reliable and dependable register coupling for
straight-reading or AMR/AMI meter reading options.
Tamper-Proof Features: Unauthorized removal of the register or encoder
is inhibited by the option of a tamper detection seal wire screw, TORX®
tamper-resistant seal screw or the proprietary tamper-resistant keyed seal
screw. Each can be installed at the meter site or at the factory.
Maintenance: Badger Meter Recordall Disc Series meters are designed and
manufactured to provide long-term service with minimal maintenance.
When maintenance is required, it can be performed easily either at the meter
installation or at any other convenient location.
To simplify maintenance, the register, measuring chamber, and strainer can
be replaced without removing the meter housing from the installation.
No change gears are required for accuracy calibration. Interchangeability
of parts among like-sized meters also minimizes spare parts inventory
investment. The built-in strainer has an effective straining area of twice the
inlet size.
Connections: Tailpieces/Unions for installations of meters on various pipe
types and sizes, including misaligned pipes, are available as an option.
SPECIFICATIONS
Model 170 Disc Series Meter
Typical Operating Range
(100% ± 1.5%)
Low Flow (Min. 95%) 1.5 gpm (0.34 m3/hr)
Maximum Continuous
Operation
Pressure Loss at Maximum
Continuous Operation
Maximum Operating
Temperature
Maximum Operating
Pressure
Measuring Element Nutating disc, positive displacement
Meter Connections 2" AWWA two-bolt elliptical flange, drilled
Test Plugs Optional 1" NPT test plug (TP) available on
Materials
Meter Housing Lead-free bronze alloy
Housing Bottom Plates Lead-free bronze alloy
Measuring Chamber Engineered polymer
Disc Engineered polymer
Trim Stainless steel
Strainer Engineered polymer
Disc Spindle Stainless steel
Magnet Ceramic
Magnet Spindle Stainless steel
Register Lid and Shroud Engineered polymer or bronze
2.5…170 gpm (0.57…39 m3/hr)
100 gpm (23 m3/hr)
3.3 psi at 100 gpm
(0.23 bar at 23 m3/hr)
80° F (26° C)
150 psi (10 bar)
or
2…11-1/2 NPT internal pipe threads
elliptical long and short versions
RDM-DS-00072-EN-03 (May 2013)
Product Data Sheet
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