
Hot water meter range
Single jet , Multi jet and Woltmann hot water meters used for monitoring hot water flow in UK and Europe to MID requirements.
B Meters and Itron meters for up to 90C maximum temperatures.
GWF and Honeywell meters for up to 130C maximum temperatures
New from B Meters Mbus ,Wireless Mbus and LoRaWAN communication.
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B Meters GMDM-I Multi jet hot water meters
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B Meters GSD8 Single jet hot water meters
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B METERS RFM-MB1 Wired MBus Module for GSD8 water Meters
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B Meters WDE-K50 Woltmann Hot water meter
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GWF WPD FS Woltmann Hot water meter 130C
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Honeywell Elster H4300 Woltmann Hot water meters
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Itron Aquadis volumetric hot water meter
B Meters GMDM-I Multi jet hot water meters


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4:30pm on Monday
for guaranteed delivery on Tuesday!
- GMDM-I is a multi-jet dry dial magnetic transmission water meter with a 360 deg rotating lid.
- MID accuracy 2044/22/EC
- Hot water 90C and 16 Bar max
- Inductive pre equipped for installation of data communication modules ,Pulse , Mbus , Wireless Mbus
- Horizontal installation R100
MWA Code | C/W PULSE UNIT IWM -PL3 | Connections | Min flow l/hr |
Q3 MAX M3/HR | LENGTH |
---|---|---|---|---|---|
GMDM-I AC 15 | 1 pulse = 10 litres | c/w ½” BSPT unions | 250 | 2.5 | 145 |
GMDM-I AC 20 | 1 pulse = 10 litres | c/w ¾” BSPT unions | 40 | 4.0 | 190 |
GMDM-I AC 25 | 1 pulse = 10 litres | c/w 1” BSPT unions | 63 | 6.3 | 260 |
GMDM-I-AC 30 | 1 pulse = 10 litres | c/w 1¼” BSPT unions | 100 | 10.0 | 260 |
GMDM-I AC 40 | 1 pulse = 10 litres | c/w 1½” BSPT unions | 160 | 16.0 | 300 |
GMDM-I AC 50 | 1 pulse = 10 litres | c/w 2” BSPT unions | 260 | 25.0 | 300 |
IWM-PL3 Pulse unit
IWM- MB3 Mbus unit
IWM-TX3 wireless Mbus unit
B Meters GSD8 Single jet hot water meters


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for guaranteed delivery on Tuesday!
- WRAS approved
- Single jet meters ,MID accuracy 2044/22/EC
- Hot water 90C and 16 Bar max
- Brass, inline meters, with and without pulse lead
- Horizontal (H) and Vertical (V) installation
- MB1 Mbus output option
- TX1 Wireless Mbus option
MWA Code | Type | Connections | Min flow l/hr |
Flow range | Q3 max m3/hr |
---|---|---|---|---|---|
GSD8/15 | Direct Read | c/w ½” BSPT unions | 25 | R100 -H | 2.5 |
GSD8/20 | Direct Read | c/w ¾” BSPT unions | 40 | R100 -H | 4.0 |
GSD8/15P | 1 pulse = 1 litre | c/w ½” BSPT unions | 25 | R100 -H | 2.5 |
GSD8/20P | 1 pulse = 1 litre | c/w ¾” BSPT unions | 40 | R100 -H | 4.0 |
B METERS RFM-MB1 Wired MBus Module for GSD8 water Meters


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4:30pm on Monday
for guaranteed delivery on Tuesday!
The RFM-MB1 is a wired M-BUS module suitable for the consumption data transmission and applicable to the single jet GSD8-RFM.
Easy to install and configure, in addition to the current consumption and up to 12 months of historical values, it can detect several fraud attempts against the meters, the prolonged functioning at the maximum flow rate (Q4) and a potential water loss downstream the meter.
Specification | Value |
---|---|
Working temperature | – 10oC to 55oC |
Power supply | Bus power supply + 3v lithium battery |
Battery life | Without bus power 1 year |
Protection | IP65 |
Data transmission | Wired MBus EN 13757-2/3 |
Coverage | Depending on MBus master |
Measuring sensibility | 1 litre |
Transmitted Data | Volume consumption, Alarms |
Alarms | Discharged battery, module removal, magnetic fraud attempt, maximum flow rate overlapping, backward flow, leakage detection |
B Meters WDE-K50 Woltmann Hot water meter


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4:30pm on Monday
for guaranteed delivery on Tuesday!
Key Features:
- Horizontal Woltmann with removeable insert. Sealed counter mechanism with magnetic transmission.
- inductive pre -equipment for the installation of data communicating modules ,Pulse ,Mbus and Wireless Mbus.
- Wide measuring range
- Suitable for hot water 90C max
- CEN MID 2014/32/UE approved
- Direct reading on 6 numeric rolls ,360 deg rotating dry dial ,with lid
- MID R100 horizontal and vertical
- MB4 wired Mbus option
- TX4 wireless Mbus option
MWA CODE | TYPE C/W IWM-PL4 | CONNECTIONS | Q1 MIN FLOW M3/HR | Q3 ,MAX FLOW M3/HR | LENGTH MM |
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WDE-K50 AC 50 | 1 pulse = 100 litres | 50mm PN16 | 0.4 | 40 | 200 |
WDE-K50 AC 65 | 1 pulse = 100 litres | 65mm PN16 | 0.63 | 63 | 200 |
WDE-K50 AC 80 | 1 pulse = 100 litres | 80mm PN16 | 1 | 100 | 225 |
WDE-K50-AC 100 | 1 pulse = 100 litres | 100mm PN16 | 1.6 | 160 | 250 |
WDE-K50 AC 125 | 1 pulse = 100 litres | 125mm PN16 | 1.6 | 160 | 250 |
WDE-K50 AC 150 | 1 pulse = 100 litres | 150mm PN16 | 2.5 | 250 | 300 |
WDE-K50 AC 200 | 1 pulse = 100 litres | 200mm PN16 | 4 | 400 | 350 |
GWF WPD FS Woltmann Hot water meter 130C


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4:30pm on Monday
for guaranteed delivery on Tuesday!
Woltmann hot water meter for 130C max temp.Sizes DN50,65,80,100,125,150
Robust , high wear resistant materials .Excellent measuring stability and reliability.
Measurement of high relatively constant flow rates.3 x DN straight pipe upstream of meter.
Volume measuring part for heat calculation the meter is suitable for installation in central and
district heating applications.
Features ; Universal installation position, maximum pressure 16 bar, powder coating
CE conformity to MID Accuracy class 3 ,Pulse output
Options: Demineralized water , Caustic Soda 20% ,Chlorinated water 1% ,ANSI 150 flanges.
Type Size Flow range Length Pulse output
WPDFS50 50mm PN16 1.5 to 30m3/hr 200mm 1 pulse/100 litres
WPDFS65 65mm PN16 2.5 to 50m3/hr 200mm 1 pulse/100 litres
WPDFS80 80mm PN16 4.0 to 80m3/hr 225mm 1 pulse/100 litres
WPDFS100 100mm PN16 6.0 to 120m3/hr 250mm 1 pulse/100 litres
WPDFS125 125mm PN16 10.0 to 200m3/hr 250mm 1 pulse/100 litres
WPDFS150 150mm PN16 15.0 to 300m3/hr 300mm 1 pulse/100 litres
Honeywell Elster H4300 Woltmann Hot water meters


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- Woltmann meters, iso 4060 Class A accuracy
- Hot water 130C and 16 Bar max
- Cast Iron epoxy coated, inline meters, pulse output as standard
- Horizontal and Vertical installation
MWA Code | Type | Connections | Min flow m3/hr | Qnom m3/hr | Qmax m3/hr |
---|---|---|---|---|---|
H4300/50 | 1 pulse =100 litres | 2” flanged PN16 | 0.55 | 15 | 30 |
H4300/65 | 1 pulse =100 litres | 2½” flanged PN16 | 0.55 | 25 | 60 |
H4300/80 | 1 pulse =100 litres | 3” flanged PN16 | 2 | 40 | 90 |
H4300/100 | 1 pulse =100 litres | 4” flanged PN16 | 2.4 | 60 | 200 |
H4300/125 | 1 pulse =100 litres | 5” flanged PN16 | 3.5 | 100 | 200 |
H4300/150 | 1 pulse =100 litres | 6” flanged PN16 | 4.54 | 150 | 300 |
H4300/200 | 1 pulse =100 litres | 8” flanged PN16 | 8 | 250 | 500 |
Itron Aquadis volumetric hot water meter


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4:30pm on Monday
for guaranteed delivery on Tuesday!
Key Features
- Aquadis Hot Water Meter 90°C 16 bar MID 2004/22/ EN14154-2005 (Class R160)
- Rotary piston volumetric water meter
- Brass body – Horizontal & Vertical Installation. Accuracy +/- 2%
- Cyble communication modules
MWA Code | Type Class C (MID R315) | Body Length |
---|---|---|
AQU15H | Itron. ½” BSP Volumetric Hot Water Meter Q3 = 2.5m³/h R=160 | 110mm |
AQU20H | Itron. ¾” BSP Volumetric Hot Water Meter Q3 = 4m³/h R=160 | 190mm |
Options
Cyble pulse unit with 5 metre lead
Cyble Mbus unit with 5 metre lead
Cyble wireless Mbus unit