MFC1 Purge Rotameter (Constant Flow Purge Device)

Constant-flow purge device combining a micro metal tube rotameter with a differential control valve — holds purge flow steady when system pressure or load changes.

Key Specifications

Model: MFC1
Principle: Metal tube float meter + constant differential pressure control valve
Size / Connection: DN10–DN50 (MFC16 micro / MFC10 versions)
Measuring range: Water 3–25,000 L/h; Air 50–7,000 NL/h (0.7–800 Nm3/h)
Accuracy: Constant flow held automatically against pressure / load changes
Output / Protocol: Local indication with regulating valve (purge flow set point)

Category: Purge Devices

Keywords:purge rotameter constant flow purge device purge flow controller differential pressure purge meter

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The MFC1 combines a micro metal tube float flow meter with a constant-flow control valve. When system pressure or load changes, the valve automatically holds the set purge flow constant — the basis of reliable bubbler level measurement and instrument purging.

Two control arrangements cover both cases: the RE type with the valve upstream suits constant outlet pressure or vented service, while the RA type downstream suits constant inlet pressure. Local indication plus a regulating valve make commissioning and routine adjustment simple.

Key Features

Automatic constant-flow control under changing pressure or load
MFC16 for micro flows and MFC10 in DN15–DN50 for water up to 25,000 L/h and air up to 800 Nm3/h
Standard -80 C to +150 C; high-temperature version -196 C to +300 C
Protects level tapping points and impulse lines from clogging, waxing and condensation
Standard companion device for the MLC bubbler level system

Technical Specifications

Versions	MFC16 (micro flow) and MFC10 (standard)
Sizes	DN10-DN50
Controlled flow - water	3-25,000 L/h
Controlled flow - air	50-7,000 NL/h (0.7-800 Nm3/h)
Pressure rating	Up to PN400 / Class 2500
Process temperature	Standard -80 to +150 C; high-temperature version -196 to +300 C
Control types	RE type (valve upstream) and RA type (valve downstream)

FAQ

What is the MFC1 used for?

It supplies a constant purge flow to bubbler level systems and to transmitter tapping points in refining, chemical, ethylene, fertilizer, steel and fiber plants, preventing clogging and back-diffusion of corrosive gases.

RE or RA type — which one?

Choose RE (valve upstream) when outlet pressure is constant or the line vents to atmosphere; choose RA (valve downstream) when inlet pressure is constant. For liquid service both behave the same.

What flows can it control?

Water from 3 to 25,000 L/h and air from 50 NL/h to 800 Nm3/h across the MFC16 and MFC10 (DN10–DN50) versions.

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Send your medium, pipe size, flow range, temperature and pressure to admin@hainameter.com or WhatsApp +86 15671082677.