Standard & Optional Construction
RCM flow meters are available in a range of materials to suit your process fluid and operating conditions. Select the right combination of body, bellows, and seal materials for your application.
Material Compatibility Wizard
Material Compatibility Wizard
What fluid will you be measuring?
Select your process fluid to get an instant material recommendation.
Liquids
Gases
Gases / Aggressive
Construction Specifications
| Component | Standard | Optional |
|---|---|---|
| Series | Series 7000 — FNPT (threaded) | Series 8000 — Wafer, mounts between 150 or 300 class flanges |
| Housing | UV Stabilized Polycarbonate | Aluminum |
| Body | Bronze | Monel / 316SS |
| Bellows | Bronze | Monel / 316SS / Inconel |
| Seals | Buna N | Viton / EPR / Teflon |
| Crystal | Polycarbonate | Glass |
| Gear Movement | Bronze | 316SS |
| Accuracy | ±3% F.S. | ±3% F.S. |
| Repeatability | ±1% F.S. | ±1% F.S. |
| Maximum Pressure | 180 psig (12.6 kg/cm²) | 400 psig (28.1 kg/cm²) |
| Minimum Pressure | 10 psig (0.67 kg/cm²) | 10 psig (0.67 kg/cm²) |
| Maximum Temperature | 212°F (100°C) | 350°F (177°C) |
| Minimum Temperature | -30°F (-34°C) | -80°F (-62°C) |
Body Material Selection Guide
Bronze
Standard material of construction. Suitable for water, oils, most liquids and gases. Cost-effective and widely compatible.
Monel
Nickel-copper alloy offering excellent corrosion resistance to seawater, acids, and alkalis. Ideal for harsh chemical environments.
316 Stainless Steel
Austenitic stainless steel with molybdenum for superior corrosion resistance. Required for ammonia service and many chemical applications.
Seal Material Options
| Seal Material | Option | Temp Range | Best For |
|---|---|---|---|
| Buna N (Nitrile) | Standard | -30°F to 212°F | Oils, water, air, most hydrocarbons |
| Viton | Option A | -30°F to 350°F | Fuels, solvents, acids, high temp |
| EPR (Ethylene Propylene) | Option B | -30°F to 350°F | Steam, hot water, ketones, alcohols |
| Teflon (PTFE) | Option B2 | -80°F to 350°F | Aggressive chemicals, acids, solvents |
Series 7000 vs. Series 8000
Series 7000 — Threaded
FNPT connections standard
- Sizes: ¼″ to 3″ NPT or BSP
- Easy inline installation
- Most economical option
- BSP threads available on request
Series 8000 — Wafer
Mounts between 150 or 300 class flanges
- Sizes: ½″ to 8″
- Fits standard 150 or 300 class flanges
- Ideal for larger pipe sizes
- International flange equivalents supported
Flo-Gage™