Glass Tube Rotameter for Water/Air, DN15-DN50

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$142.99

Selling DN15-DN50 glass tube rotameter for water/air. The glass flow meter is available in a wide range of nominal diameters DN15-DN50 and flow ranges. The accuracy class is 2.5 and can be measured at temperatures from 0°C to 120°C. The float flow meter application for chemical industry, light industry, pharmaceuticals, food, papermaking, environmental protection and metrology testing, scientific research.

Nominal Diameter *
Flow Range *

SKU: ATO-FLOW-GT

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Delivery date: 6-12 days

Overview

Glass tube rotameters for water and air, available in DN15 to DN50 sizes. It has a wide flow range with 2.5 accuracy class and work from 0°C to 120°C. Great for chemical plants, labs, food, pharma, paper, and environmental use.

Specification

Model	ATO-VA
Nominal Diameter	Flow Range (Water, L/H)	Flow Range (Air, m³/H)	Temperature	Pressure	Accuracy
DN15	4–40	0.12–1.2	0°C–120°C	≤1.0 MPa	Liquid: Grade 2.5 / Gas: Grade 4.0
	6–60	0.2–2
	10–100	0.3–3
	16–160	0.5–5
	25–250	0.8–8
	40–400	1.2–12
	63–630	2–20
DN25	63–630	2–20
	100–1000	3–30
	160–1600	5–50
	250–2500	8–80
DN40	160–1600	5–50		≤0.9 MPa
	250–2500	8–80
	400–4000	12–120
DN50	400–4000	12–120		≤0.7 MPa
	630–6300	20–200
	1000–10000	30–300
Connection Method	Thread (Please contact customer service if you need flange/chuck connection.)

Note:

The pressure of the fluid entering the flowmeter is at least twice the pressure loss for liquids and must be more than 5 times the pressure loss for gases.
The accuracy class is 2.5, if you need 1.5, need additional notes.
If the required range is not in the table, please inquire. Some ranges can be customized.
For other liquids (e.g. alcohol, ammonia, etc.) or other gases (odor, ammonia, etc.), please select the corresponding range by converting according to the corresponding density.

Feature

Glass tube rotameter feature

Accurate Calibration: Glass tube rotameter has direct reading scale, clear graduations, and factory-calibrated for precise measurement.
Attractive Appearance: Smooth finish with refined coating, hex nut design for easy installation, and burr-free surface.
Material Options: Standard carbon steel connectors included; optional 304 stainless steel connectors available.
Clear Scale Display: Marked scale is easy to read and ensures accurate flow readings at a glance.

Dimension (unit: mm)

Glass tube rotameter size

Nominal Diameter	Window Size (a×b)	L	C	Thread
DN15	26×230	408	53	G1/2″
DN25	26×230	416	75	G1″
DN40	40×230	426	92	G1½″
DN50	50×230	430	116	G2″

Application

Widely used in chemical industry, light industry, pharmaceuticals, food, papermaking, environmental protection and metrology testing, scientific research and other departments to measure the flow of single-phase non-pulsating fluids (liquids or gases).

Glass tube rotameter applications

Tips: What is a glass tube rotameter and how does it work?

A glass tube rotameter is a type of variable area flow meter that measures the flow rate of liquids or gases. It works by allowing the fluid to pass through a vertical tapered glass tube, where a float rises or falls depending on the flow rate. The position of the float corresponds to a calibrated scale on the tube, providing a direct visual reading.

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