Introduction

The Small-diameter Mechanical Water Meter is a traditional flow measurement device designed to measure the total volume of potable water passing through small-diameter pipelines.

Parameters and Specifications

Nominal caliber	Length (mm)		Width (mm)	Altitude (mm)	Connect the threads		Weight
(DN)	H	H1	B	L	d	D	(Kg)
15	189	55	96	142	R1/2	G3/4B	1.8
20	204	110	96	157	R3/4	G1 B	2
25	225	107	101	167	R1	G11/4B	3
32	230	107	101	185	R11/4	G11/2B	3.4
40	285	137	125	196	R11/2	G2B	5

Nominal diameter (mm)	Nominal diameter (mm)	Load flow Q	Common flow Q₃	Boundary flow Q₂	Minimum flow Q₁
Nominal diameter (mm)	Nominal diameter (mm)	m³/h
LXS-DN15E	Level 2	3.215	2.500	0.040	0.025
LXS-DN20E	Level 2	5.000	4.000	0.064	0.040
LXS-DN25E	Level 2	7.875	6.300	0.100	0.063
LXS-DN32E	Level 2	12.50	10.00	0.160	0.100
LXS-DN40E	Level 2	20.00	16.00	0.256	0.160

Features

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Reliable Mechanical Structure
Pure mechanical design without electronic components ensures stable performance and independence from power supply.

High Measurement Accuracy
Precisely manufactured components provide accurate water flow measurement, typically within standard error limits.

Low Starting Flow Rate
Sensitive to low flow conditions, enabling accurate measurement of small water usage.

Durable and Corrosion-resistant Materials
Constructed from high-quality materials such as brass or engineering plastics to ensure long-term durability.

Clear and Easy Reading
Equipped with pointer and roller register or sealed dial to ensure long-term readability.

Key Applications

Residential water supply systems (houses, apartments)
Small commercial buildings (shops, offices, restaurants)
Sub-metering and tenant billing systems
Rural and community water supply projects
Light industrial water usage monitoring

Flow Error Curve

Outline Dimensional Drawing

Customization

Available sizes: DN15, DN20, DN25, DN32, DN40, DN50
Cold water and hot water versions available
Different pressure ratings (e.g., PN10 / PN16)
Optional register types (dry dial, wet dial, liquid-sealed)
Optional pulse output or remote reading module (AMR/AMI ready)
Optional accessories: inlet filter, non-return valve
Material options: brass, plastic, stainless steel

Our Services

OEM / ODM Service – Custom logo, design, and packaging

Technical Support – Professional selection and installation guidance

Fast Delivery – Stable production capacity and on-time shipment

After-sales Support – Reliable technical assistance and maintenance guidance

Customized Solutions – Tailored metering solutions for different industries

FAQ

Q: What type of water is this meter suitable for?

A: It is suitable for clean potable water, including both cold and hot water systems.

Q: What sizes are available?

A: Common sizes range from DN15 to DN50, depending on application requirements.

Q: Does it require power supply?

A: No, it is a fully mechanical meter and does not require electricity.

Q: Can it measure low flow accurately?

A: Yes, it has a low starting flow rate and good sensitivity for small water usage.

Q: Is maintenance complicated?

A: No, its simple mechanical structure ensures easy maintenance and long service life.

Q: What is the typical service life?

A: Under normal conditions, it typically lasts 5–10 years or longer with proper use.

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Small-diameter Mechanical Water Meter