Product Overview & Company Profile

product-2048-2048

Our Dry Dial Cast Iron Multi-Jet Water Meter is designed for accurate measurement of cold potable water in residential, commercial, and industrial applications. The multi-jet principle ensures consistent accuracy across all flow rates, while the hermetically sealed dry dial remains fog-free for decades.

Key Features & Advantages of Cast Iron

Feature	Description
Multi-Jet Mechanism	Water enters through multiple tangential ports, evenly striking the impeller for consistent accuracy across all flow rates.
Dry Dial Register	Magnetic drive keeps counter completely sealed from water – NO fogging, NO condensation, crystal-clear reading for decades.
Magnetic Shield	Protects against external magnetic tampering attempts.
Built-In Strainer	Stainless steel inlet screen captures debris, protecting internal mechanism.
Low Starting Flow	Detects even small leakages (as low as 4 L/h for DN15).
External Adjustment	Calibration can be fine-tuned without breaking the seal (optional).
Pulse Output Ready	Pre-drilled for optional reed switch or Hall sensor for remote reading.

Why Cast Iron?

Exceptional Durability: Withstands high pressure, water hammer, and mechanical stress.
Corrosion Resistance: Naturally forms protective oxide layer; suitable for underground installation.
Thermal Stability: Performs reliably in extreme temperature variations.
Sound Dampening: Cast iron naturally absorbs vibration and flow noise.
Long Service Life: 15+ years typical service life with minimal maintenance.
Cost-Effective: Best value for large-scale installations.

product-2048-2048

Typical Applications of Cast Iron Water Meters

Cast iron multi-jet meters are the preferred choice for a wide range of water measurement applications due to their robustness and reliability:

Application Sector	Common Uses
Municipal Water Supply	Primary metering in city water distribution networks, residential blocks, and apartment complexes
Industrial Facilities	Monitoring water consumption in factories, cooling systems, and processing plants where durability under high pressure is essential
Commercial Buildings	Office towers, shopping malls, hotels, and hospitals requiring accurate billing and leak detection
Agricultural Irrigation	Measuring water usage for farms and irrigation systems, especially where meters may be installed in pits or exposed to soil contact
Underground Installations	Direct burial in meter pits or chambers; cast iron's corrosion resistance ensures long-term performance without external protection
Replacement of Aging Infrastructure	Retrofitting old cast iron pipelines with compatible meters that match the longevity of existing systems
Construction Sites	Temporary water supply monitoring for construction projects
Schools & Institutions	Campus-wide water management and sub-metering
Mining Operations	Process water measurement in demanding environments
Government Facilities	Military bases, public housing, and municipal buildings

product-2048-2048

Technical Specifications (DN15 – DN50)

General Specifications

Parameter	Value
Water Temperature	0°C – 50°C (cold water)/0°C – 90°C (hot water)
Maximum Pressure	1.6 MPa (16 bar) optional
Pressure Loss	≤ 0.063 MPa
Accuracy Class	Class 2 per ISO 4064 (Upper zone: ±2%, Lower zone: ±5%)
Installation Position	Horizontal (dial facing upward)
Register Type	Dry dial, magnetic drive, 8-digit roller counter
Minimum Reading	0.0001 m³
Maximum Reading	99,999 m³
Protection Class	IP68

Dimensions Table

Size	Length L (mm)	Width W (mm)	Height H (mm)	Connection	Weight (kg)
DN15	165 / 190	98	104	G¾B Thread	1.5
DN20	190 / 195	98	108	G1B Thread	1.8
DN25	225 / 260	103	115	G1¼B Thread	2.5
DN32	230 / 260	103	115	G1½B Thread	3.0
DN40	245 / 300	124	153	G2B Thread	4.5
DN50	280 / 300	124	153	G2½B Thread / 4-Hole Flange	7.0

Note: ISO 4064 offers multiple standard lengths – please specify required length when ordering.

Flow Parameters Table

Size	Q3 (m³/h)	Minimum Flow Q1 (L/h)			Starting Flow (L/h)
		R80	R100	R160
DN15	2.5	31.25	25	15.6	≤ 14
DN20	4.0	50	40	25	≤ 16
DN25	6.3	78.75	63	39.4	≤ 19
DN32	10.0	125	100	62.5	≤ 25
DN40	16.0	200	160	100	≤ 56
DN50	25.0	312.5	250	156.3	≤ 70

*Note: Transitional flow Q2 = 1.6 × Q1 for all accuracy classes.*

Selection Guide:

R80: Standard accuracy, best value for general residential use

R100: Enhanced accuracy for commercial buildings and apartments

R160: High sensitivity for industrial applications and leak detection

product-1034-566

product-1018-650

Connection Types

Type	Sizes	Description
Threaded (BSP)	DN15 – DN50	Standard parallel threads; includes coupling nuts, tailpieces, and rubber gaskets.
Flanged	DN50	4-hole flange to ISO 7005 / EN 1092 standards.
Union	DN15 – DN40	Optional quick-install configuration for easy maintenance access.

Standard Accessories Included: 2 coupling nuts, 2 tailpieces, 2 rubber gaskets.

Optional Material Variants

Material	Best For
Cast Iron (Standard)	Municipal, industrial, underground
Brass	Premium residential, aesthetic installations
Stainless Steel 304/316	Food processing, pharmaceutical, pure water
Nylon / Engineering Plastic	Chemical plants, weight-sensitive installations

product-2048-2048

Installation Guide

Before Installation

Flush pipeline thoroughly – remove all sand, stones, and debris.
Verify size and pressure rating match your system.
Inspect meter for shipping damage.

Installation Requirements

Flow Direction: Arrow on body MUST point in direction of water flow.
Position: Horizontal only (dial facing up) – unless vertical model ordered.
Straight Pipe: Inlet ≥5D (10D for R160), Outlet ≥2D (5D for R160).
Location: Avoid highest points (air pockets); protect from freezing.

Threaded Connection Procedure

Place rubber gaskets inside coupling nuts.
Position meter between nuts, ensure flow arrow correct.
Start nuts by hand – turn counterclockwise until threads engage (feel "click").
Hand-tighten firmly, then give ¼ to ½ turn with wrench.
DO NOT OVERTIGHTEN – can crack cast iron body.
DO NOT use thread sealant – sealing is by gaskets only.

Flanged Connection (DN50)

Ensure flange faces clean, center gasket, insert bolts and tighten diagonally in sequence.

Post-Installation Checks

Slowly open inlet valve to prevent air hammer.
Check for leaks.
Bleed air by opening downstream faucet.
Verify register rotation when water flows.
Leak test with all faucets closed.

product-2937-1797

Maintenance & Troubleshooting

Maintenance Schedule

Interval	Action
Annually	Visual inspection for leaks, damage, or corrosion.
Every 2–3 Years	Clean inlet strainer (if water quality is poor).
Every 5 Years	Accuracy check against reference meter.
6–8 Years	Replace meter (per regulatory requirements for ≤DN25).

Troubleshooting Guide

Problem	Likely Cause	Solution
No registration with flow	Clogged strainer / jammed impeller	Clean strainer; remove debris
Registers when no water used	Downstream leak / backflow	Repair leak; install check valve
Under-registration (slow)	Worn parts / partial blockage	Replace mechanism; clean strainer
Over-registration (fast)	Air in water / pressure fluctuation	Eliminate air; stabilize pressure
Foggy dial (dry type)	Seal failure	Replace seal or complete register
Leaks at connections	Worn gasket / loose nut	Replace gasket; tighten properly
Noisy operation	Cavitation / excessive flow	Check pressure; install reducer

Ordering Information & Contact

1. How to Order

Specify the following:

Model: LXSG Series Dry Dial Multi-Jet Meter
Size: DN15 / DN20 / DN25 / DN32 / DN40 / DN50
Accuracy: R80 / R100 / R160
Body Material: Cast Iron (default) / Brass / Stainless Steel / Nylon
Connection: Threaded / Flanged / Union
Length: e.g., 165 mm, 190 mm, 260 mm, 300 mm
Options: Pulse output (reed switch / Hall sensor), non-return valve, external adjustment, custom branding