Dwyer MMF-1-PV Mini-Master Flowmeter
The Dwyer MMF-1-PV is a Mini-Master® Series MMF compact variable area flowmeter that reads 0.1 to 1 SCFH air directly on a 1-1/2 in. (38 mm) scale with ±10% FS accuracy. It has a bottom mount valve, installs from the front of the panel with bezel-type mounting, and is rated to 10 psi and 125°F.
Specifications verified October 14, 2026 against the Dwyer Series MM catalog (pp. 250-251).
Best For
- Direct reading of 0.1 to 1 SCFH air on a 1-1/2 in. scale
- Air samplers and gas analyzers
- Pollution monitors
- Cabinet purging
- Medical equipment
- Front-of-panel installation where panel space is tight
Warranty
Dwyer warrants this product for one year from delivery to the buyer under its standard warranty, unless a product-specific warranty supplied with the product states another period.
Key Features
Direct-Reading 1-1/2 in. Scale
Reads 0.1 to 1 SCFH air directly with ±10% FS accuracy. Side printed scale graduations give an instant reading, and a white back on the flow tube makes the float easier to see.
Front-of-Panel Bezel Mounting
Installs from the front of the instrument panel: drill two 9/32 in. or 5/16 in. holes on 2-1/16 in. centers, insert the connector spuds and slide on the furnished spring retainers from the rear.
Bottom Mount Valve
Bottom mount valve with polyurethane valve components. With the valve, the meter is rated to 10 psi (0.6 bar).
Compact Styrene Acrylonitrile Body
A compact meter ideal for measuring small volume air, with a body that needs minimal panel space.
1/4 in. OD Tube Connections
Push on rubber or plastic tubing, or connect metal or rigid plastic tubing with a double compression nylon tube union such as Dwyer A-328.
Durable Construction
Durable construction for long operation life, with precision molding for high repeatability.
ZOT Supply is an authorized distributor of Dwyer products.
Technical Specifications
| Specification | MMF-1-PV |
|---|---|
| Model | MMF-1-PV |
| Series | Mini-Master® Series MMF |
| Flow Range | 0.1 to 1 SCFH air |
| Range Number | 1 |
| Scale Length | 1-1/2 in. (38 mm) |
| Accuracy | ±10% FS |
| Service | Compatible gases and liquids |
| Temperature Limit | 125°F (51°C) |
| Pressure Limit | 10 psi (0.6 bar) |
| Valve | Bottom mount valve |
| Body Material | Styrene acrylonitrile |
| Float | Stainless steel, black glass or nylon |
| Valve Material | Polyurethane |
| Process Connection | 1/4 in. OD for push-on rubber or plastic tubing; connect to rigid tubing with compression fittings |
| Mounting | Bezel-type panel mounting from the front: two 9/32 in. or 5/16 in. holes on 2-1/16 in. centers, spring retainers furnished |
| Weight | 0.5 oz (14.17 g) |
| Accessory | A-328 double compression nylon tube union |
| Compliance | Meets the technical requirements of EU Directive 2011/65/EU (RoHS II) |
Frequently Asked Questions
What flow range does the Dwyer MMF-1-PV measure?
The MMF-1-PV reads 0.1 to 1 SCFH air directly on a 1-1/2 in. (38 mm) scale with ±10% FS accuracy.
What pressure and temperature is the Dwyer MMF-1-PV rated for?
It is rated to 10 psi (0.6 bar) and 125°F (51°C).
Does the Dwyer MMF-1-PV include a valve?
Yes. The MMF-1-PV has a bottom mount valve with polyurethane valve components.
How is the Dwyer MMF-1-PV mounted?
It mounts from the front of the panel. Drill two 9/32 in. or 5/16 in. diameter holes on 2-1/16 in. centers, insert the connector spuds, then slide the two furnished spring retainers on from the rear and push on rubber or plastic tubing.
What tubing connects to the Dwyer MMF-1-PV?
The connections are 1/4 in. OD for push-on rubber or plastic tubing. For metal or rigid plastic tubing, use compression fittings such as the Dwyer A-328 double compression nylon tube union.
What is the Dwyer MMF-1-PV made of?
The body is styrene acrylonitrile and the float is stainless steel, black glass or nylon. Valve components are polyurethane.
- Series:
- MM
- Product Type:
- Variable Area Flowmeter
- Media:
- Air
- Flow Range:
- 0.1-1 SCFH
- Connection Type:
- Push-On Tubing
- Connection Size:
- 1/4 in. OD
- Body Material:
- Styrene Acrylonitrile
- Max Pressure:
- 10 psi
- Max Temperature:
- 125°F
- Accuracy:
- ±10% FS
- Valve:
- Bottom Mount
- NIST Calibration:
- Available
