DN125mm – Woltman Type Bulk Flow Water Meters

Woltman Type Bulk Flow Water Meters
Woltman Type Bulk Flow water meter is a type of network oriented flow meter having a longer working life than
most of its peers . This is a mechanical device having a magnetic coupling enabling frictionless movement to
provide fault less and accurate reading .

Application –
Measuring the volume of cold potable water passing through the pipeline.

Sizes –
DN125mm

Feature –
Dry Type, Magnetic driven, anti magnetic function, pointer roller indicator, easy and long term clear
reading, frost resistance, long work life.
Dual alignment impeller for consistent movement
Strong magnetic coupling
Robust Cap and lid for supporting outside installations
Hydrodynamical balanced impeller chamber and the body
Modular design for any retrofitting needs of AMR/AMI devices
IP68 protected
Excellent accuracy curve
Long life guaranteed when used according to the correct engineering practices
Tamper proof fitment to avoid manipulations

Maximum Permissible Error –
In the lower zone from Qmin inclusive upto but excluding Qt is +5%.
In the upper zone from Qt inclusive upto and including Qmax is +2%.

Working Condition –
Water temperature < 55 for cold water meter
Water pressure < 1MPa or 1.6MPa optional (10bar or 16bar optional)

Note –
Technical data conforms to Indian Standard 779:1994, MID CE&International Standard ISO:4064 as follows

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Dimensions
Size (mm)	Dimensions	Length L (mm) ±5	Height H (mm) ±5	Flange Thickness b (mm) ±(3+0.005b)	Outside Diameter D1 (mm) ±5	Bolt Circle Diameter D2 (mm) ±2	No. of Holes for Bolt connections
Woltman Type	50	200	216	20	165	125	4
	65	200	280	20	185	145	4
	80	225	280	20	200	160	8
	100	250	295	21	217	180	8
	125	250	308	21	245	210	8
	150	300	325	23	280	240	8
	200	350	368	25	340	296	8
	250	450	460	27	400	353	12
	300	500	485	27	453	405	12
	400	605	655	41	580	525	16
	500	800	755	42	713	650	20

Technical Specification
Size DN (mm)	Class	Overload Flow Qmax (m³/h)	Permanent Flow Qn (m³/h)	Transitional Flow Qt (m³/h)	Minimum Flow Qmin (m³/h)
50	B	20	16	0.64	0.4
65	B	31.25	25	1	0.625
80	B	50	40	1.6	1
100	B	78.75	63	2.52	1.575
125	B	125	100	4	2.5
150	B	200	160	6.4	4
200	B	312.5	250	10	6.25
250	B	500	400	16	10
300	B	787.5	630	25.2	15.75
400	B	2000	1600	64	40
500	B	3125	2500	100	62.5

S.No.	Description	Material	Quantity
1	Meter Body	Cast Iron	1
2	Gasket for Installation	EPDM	1
3	Support	ABS Plastic	1
4	Turbine/Impeller	Nylon	1
5	Rectifier	ABS Plastic	1
6	Turbine/Impeller Shaft	ABS Plastic	1
7	Transmission Shaft Cover	ABS Plastic	1
8	Bevel Gear	Nylon	1
9	Transmission Shaft	Stainless Steel	1
10	Adjusting Shaft	Brass	1
11	Adjusting Shaft Nut	Brass	1
12	Transmission Magnet	Ferrite	1
13	Pressure Plate	Nylon	1
14	O-ring for pressure plate	Rubber	1
15	Flange O-ring	Rubber	2
16	Flange nut	Stainless Steel	4
17	Flange cover	Cast Iron	1
18	Adjusting screw	Brass	1
19	Flange Washer	Stainless Steel	4
20	Flange bolt	Stainless Steel	4
21	Magnet	Ferrite	1
22	Clock O-ring	Rubber	1
23	Sensor with pulse output cable(optional)	-	1
24	Clock	Plastic Components	1
25	Clock Cover	Poly carbonate	1
26	Cap	Mild Steel	1
27	Cap screw	Stainless Steel	2
28	Cap shaft	Stainless Steel	1
29	Cap lid	Aluminium	1