Product Overview
The Disc Series is RecordALL’s nutating-disc positive-displacement meter — the workhorse for commercial and industrial potable cold water at low-to-medium, intermittent flow. Because the disc sweeps a fixed volume on every nutation and a sealed magnetic drive carries that count out to the register, the meter keeps registering below its normal range, where a velocity meter would miss the flow. Six models (25 through 170) cover 5/8 to 2 in. and normal flows of 0.5 to 170 gpm in lead-free bronze alloy that meets AWWA C700, certified to NSF/ANSI/CAN 61 & 372 with the NSF-61 mark on the housing and held to 98.5–101.5% over the normal range (with low-flow registration to the AWWA C700 minimums). A built-in strainer protects the chamber, and the register, chamber and strainer all lift out for service without pulling the housing from the line. The meter reads on the standard sealed mechanical totalizer or, as options, an HR-E LCD encoder, an ER counter, a PFT transmitter, or AquaCUE cellular AMI.
Other RecordALL meters & read-out
Turbo Series — floating-rotor turbine, consistent high flow
Compound Series — disc + turbine for wide demand swings
Mechanical Register — sealed RCDL totalizer
AquaCUE Cellular AMI/AMR — cellular cloud reads
Key Features & Benefits
- Counts every gallon — positive displacement physically meters each cycle, so the Disc reads accurately at low and intermittent flow where a velocity meter under-registers
- Six models, 5/8 to 2 in. — Models 25 through 170 cover normal flows from 0.5 to 170 gpm in one family, with parts interchangeable among like-sized meters to cut spare-part inventory
- Lead-free certified — lead-free bronze alloy meets AWWA C700 and carries the NSF-61 mark on the housing — the whole meter is the certified system for potable billing service
- Billing-grade and low-loss — held to 98.5–101.5% over the normal range with high low-flow registration, at well under the AWWA pressure-loss ceiling, so it bills fairly without starving downstream fixtures
- Reads how you need it — one meter takes a mechanical dial, an electronic LCD encoder, a PLC transmitter or cellular AMI
- Serviced in line — the register, measuring chamber and built-in strainer all lift out without pulling the meter from the spool, and no change gears are needed for calibration, so downtime is minutes
Specifications
- Measurement principle
- Positive displacement — a nutating disc displaces a known volume each cycle and a direct magnetic drive couples it through the meter wall to a permanently sealed register, so every gallon is physically counted with high low-flow registration
- Service
- Commercial and industrial potable cold water at low-to-medium, intermittent flow
- Standards & certifications
- Meets or exceeds AWWA Standard C700; certified to NSF/ANSI/CAN 61 & 372 and compliant with the Safe Drinking Water Act lead-free rule, with the NSF-61 mark on the housing
- Sizes
- 5/8, 3/4, 1, 1-1/2 and 2 in. (DN 15–50)
- Models
- Models 25, 35, 55, 70, 120 and 170
- Operating (normal) range
- Normal operating range 0.5 to 170 gpm by size (100% ±1.5%) — 0.5–25 (Model 25, 5/8 in.), 0.75–35 (Model 35, 3/4 in.), 1–55 (Model 55, 1 in.), 1.25–70 (Model 70, 1 in.), 2.5–120 (Model 120, 1-1/2 in.), 2.5–170 gpm (Model 170, 2 in.)
- Low-flow registration
- Registers below the normal range to AWWA C700 minimums — 0.25 gpm at min 98.5% (5/8 in.), 0.375 gpm at min 97% (3/4 in.), 0.5–1.5 gpm at min 95% on the 1 to 2 in.
- Max continuous flow
- Per model — 15 (Model 25) / 25 (35) / 40 (55) / 50 (70) / 80 (120) / 100 gpm (Model 170)
- Accuracy
- 98.5–101.5% over the normal operating range (AWWA C700, 100% ±1.5%)
- Pressure / head loss
- Low at max continuous — 3.5 psi @ 15 gpm (5/8 in.) to 6.5 psi @ 50 gpm (Model 70); 4.8 psi @ 80 gpm (Model 120) and 3.3 psi @ 100 gpm (Model 170)
- Housing material
- Lead-free bronze alloy (Models 25–170, AWWA C700, NSF-certified) or engineered polymer housing (Model 25, 5/8–3/4 in.)
- Measuring element
- Nutating-disc measuring chamber — engineered-polymer chamber and disc, unitized and removable
- Temperature rating
- Potable cold water, 32–120°F (0–49°C); an optional liquid-crystal-polymer (LCP) chamber rates select sizes for hot or chemical service to 250°F (0–121°C), not NSF-certified
- Working pressure
- 150 psi (10 bar) maximum operating pressure
- Strainer
- Built-in (integral) strainer with an effective straining area twice the inlet size; removable for cleaning without pulling the meter
- End connections
- Externally threaded spuds (5/8–1 in.); 1-1/2 & 2 in. take an AWWA two-bolt elliptical drilled flange or 11-1/2 NPT internal pipe threads (optional companion flanges in cast iron or NL bronze)
- Read-out / registers
- Standard straight-reading sealed mechanical totalizer — six-wheel odometer, 360° test circle with sweep hand and a leak-detecting flow finder; optional HR-E LCD encoder, ER-6/9/420 counters, PFT and PEPT transmitters, or the PC-200 controller
- AMR / AMI
- ORION cellular, fixed-network and mobile AMR/AMI; AquaCUE cellular cloud reads
- Serviceability
- The unitized chamber and sealed register lift out for service or recalibration without removing the housing from the line; parts interchange within a size
Common Applications
- Commercial-building and tenant cold-water service and sub-metering
- Multi-family and apartment domestic metering
- Low-to-medium intermittent demand where low-flow accuracy matters
- Irrigation and process branch metering on small lines
- Billing points requiring AWWA C700 compliance
For consistent medium-to-high flow the Turbo Series turbine meter is the companion; where demand swings between very low and very high, the Compound Series meters both in one body.
Design & Selection Considerations
- Size to the demand profile, not just the pipe — the family follows the flow pattern, not the pipe diameter: the Disc Series for low-to-medium, intermittent flow that reads down to a trickle; the Turbo Series for consistent medium-to-high flow at low pressure loss; the Compound Series where demand swings between very low and very high in one body; and the Fire Series for UL/FM fire-protection mains. Use the input form to send the normal and peak flow with the line size and we’ll size the meter.
- Protect the measuring element with a strainer — grit and debris are what pull a turbine or compound reading off and wear the bearing. The Turbo carries an integral strainer as standard on the 1-1/2 in. size and as an option on 2–4 in.; for the larger and fire lines an external plate strainer (bronze NSF, steel or UL-FM, 2–12 in.) protects the element upstream. Use the input form to tell us the water quality and we’ll spec the strainer with the meter.
- Decide the read-out and AMI up front — the same meter takes a sealed mechanical RCDL totalizer, an HR-E LCD encoder, an ER counter, a PFT pulse / 4–20 mA transmitter, or AquaCUE cellular AMI/AMR — and any register or encoder lifts off without disrupting water service. Use the input form to tell us how you read it (local, PLC / SCADA, or cloud) and we’ll match the read-out.
- Lead-free and AWWA compliance is built in — every family meets its AWWA standard (Disc C700 / C710, Turbo C701 Class II, Compound C702, Fire C703) and is certified to NSF/ANSI/CAN 61 & 372, carrying the NSF-61 mark on the housing, and complies with the Safe Drinking Water Act lead-free rule. For a potable-water spec we confirm the certified configuration on the order.
- Service it in line — on every family the register or encoder and the unitized measuring element lift out for service or recalibration without removing the meter housing from the line, so the spool stays in place and downtime stays short. We can quote spare elements and registers so a swap is minutes.
To size & select the right disc-series meter:
Use the input form to send the line size, your normal and peak flow, and how you read it — a local total, a PLC / SCADA signal, or cellular AMI — and we’ll size the meter, the read-out and any strainer or AMI endpoint to the application.
Flow Meter Application Sheet ›Talk to an engineer directly — Scott Prater, Principal · 917-580-0878 · scott@pratertechnical.com
Specifications compiled by Prater Technical Partners from Badger Meter RecordALL commercial & industrial water-meter product literature.