Flow Control
MR3A03SNVT
Brooks Instrument MR3000 Variable-Area Air Flowmeter
About this part
MR3A03SNVT is an MR3000 Series direct-reading variable-area flowmeter configured for 1–11 SCFH of air. Its model code specifies a molded-polycarbonate body and tube, 303 stainless-steel fittings, no control valve, and Viton fluoroelastomer seals. The meter uses 1/8-inch FNPT inlet and outlet connections and is rated for ±4% full-scale accuracy, pressures up to 100 psig, and temperatures up to 150°F (65°C)
Configurations vary. Verify the exact unit before choosing a replacement.
Key Facts
Specifications
| Series | MR3000 / 3000 Series |
| Meter type | Direct-reading variable-area flowmeter (purgemeter) |
| Scale medium | Air |
| Flow range | 1–11 SCFH air |
| Accuracy | ±4% of full scale |
| Body and tube | Molded high-impact polycarbonate |
| Process connections | 1/8 in FNPT inlet and outlet |
| Fitting material | 303 stainless steel |
| Valve configuration | No valve |
| Seal material | Viton fluoroelastomer |
| Maximum pressure | 100 psig (6.9 bar) |
| Maximum temperature | 150°F (65°C) |
| Operating orientation | Vertical |
What Does MR3A03SNVT Mean?
The published MR3000 ordering structure decodes the complete configured identifier.
| Segment | Field | Interpretation |
|---|---|---|
| MR | Base model | Body and flow tube molded from polycarbonate |
| 3A03 | Tube code | Direct-reading 1–11 SCFH air range |
| S | Fittings | 303 stainless-steel fittings |
| N | Valve | No valve |
| VT | Seals | Viton fluoroelastomer seals for the stainless-steel configuration |
Installation and Reading Notes
- Mount the flowmeter vertically and minimize vibration and internal flow variations.
- Read a ball float at its center; read a bullet float at its groove. The published code does not identify the exact float type or material for this configuration.
- Do not exceed 60 in-lb when installing 1/8-27 MNPT mating fittings into the meter’s FNPT connections.
- Tighten the supplied 10-32 panel-mounting screws to no more than 5 in-lb.
- The installation manual limits use to non-hazardous fluids and prohibits exceeding the stated pressure and temperature ratings.
Documentation Downloads
Local PDF copiesPart Photos
2 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerThe typical recorded price range is $65.00 to $65.00. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- Brooks Instrument MR3A03SNVT Flowmeter