Markets

Products A to Z

GWF Water Meters

Johnson Valves are proud to announce a new partnership with the GWF to supply their high quality single jet water meters, multi jet water meters, ultrasonic water meters, bulk hot water meters and waste water metering solutions.

GWF MessSysteme AG is the leading Swiss company for measuring and metering water, water, electricity and heat. It provides customers with trendsetting system solutions for the readout, communication and management of measuring data. GWF is a family-run Swiss company that employs over 200 people and can look back on 120 years of success.

 

         


Single Jet Water Meters

Single Jet Water Meters

Multi Jet Water Meters

Multi Jet  Water Meters

Woltmann Hot Water Meters

Woltmann Hot Water Meters

GWF UNICO-C – Single Jet Cold Water Meter

The UNICO is a robust, cost effective single jet warm water meter with good measuring stability and reliability.

Type
Single Jet • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
15mm (1/2″) & 20mm (3/4″) • BSPT Male Unions
Duty
Cold Water up to 30°C
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
R80 (horizontal) • R40 (vertical)
Compliance & Approvals
MID-2004/22/EC • WRAS
Contact UsGWF UNICO-C – Single Jet Cold Water Meter- PDF DatasheetMID Compliant MeterWRAS Approved Product

GWF UNICO-C – Single Jet Cold Water Meter

GWF UNICO-W – Single Jet Warm Water Meter

The UNICO is a robust, cost effective single jet warm water meter with good measuring stability and reliability.

Type
Single Jet • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
15mm (1/2″) & 20mm (3/4″) • BSPT Male Unions
Duty
Warm Water up to 90°C
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
R80 (horizontal) • R40 (vertical)
Compliance & Approvals
MID-2004/22/EC
Contact UsGWF UNICO-W - Single Jet Warm Water Meter- PDF DatasheetMID Compliant Meter

GWF UNICO-W - Single Jet Warm Water Meter

GWF MTK – Multi Jet Cold Water Meter

The MTK is a robust, cost effective multi jet cold water meter for temperatures up to 30°C with good measuring stability and reliability.

Type
Multi Jet – Impeller Wheel • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
15mm (1/2″) to 50mm (2″) • BSPT Male Unions
Duty
Cold Water up to 30°C
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
R100 (Q3 2.5) • R80 (Q3 4-25)
Compliance & Approvals
MID-2004/22/EC
Contact UsMTK - GWF Multi Jet Cold Water Meter - PDF DatasheetMID Compliant Meter

MTK - GWF Multi Jet Cold Water Meter

GWF MTK-VS – Vertical Riser Multi Jet Cold Water Meter

Type
Multi Jet – Impeller Wheel • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
20mm (3/4″) to 40mm (1 1/2″) • BSPT Male Unions
Duty
Cold Water up to 30°C
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
R160
Compliance & Approvals
MID-2004/22/EC
Contact UsGWF MTK-VS – Vertical Riser Multi Jet Cold Water Meter - PDF DatasheetMID Compliant Meter

GWF MTK-VS – Vertical Riser Multi Jet Cold Water Meter

GWF MTK-VF – Vertical Down Pipe Multi Jet Cold Water Meter

Type
Multi Jet – Impeller Wheel • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
20mm (3/4″) to 40mm (1 1/2″) • BSPT Male Unions
Duty
Cold Water up to 30°C
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
R160
Compliance & Approvals
MID-2004/22/EC
Contact UsGWF MTK-VF – Vertical Down Pipe Multi Jet Cold Water Meter - PDF DatasheetMID Compliant Meter

GWF MTK-VF – Vertical Down Pipe Multi Jet Cold Water Meter

GWF MTW – Multi Jet Warm Water Meter

The MTW is a robust, cost effective multi jet warm water meter for temperatures up to 90°C with good measuring stability and reliability.

Type
Multi Jet – Impeller Wheel • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
15mm (1/2″) to 50mm (2″) • BSPT Male Unions
Duty
Warm Water up to 90°C
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
R100 (Q3 2.5) • R80 (Q3 4-25)
Compliance & Approvals
MID-2004/22/EC
Contact UsGWF MTW - Multi Jet Warm Water Meter - PDF DatasheetMID Compliant Meter

GWF MTW - Multi Jet Warm Water Meter

GWF MTH – Multi Jet Hot Water Meter

The MTH is a robust, cost effective multi jet hot water meter for temperatures up to 130°C with good measuring stability and reliability.

Type
Multi Jet – Impeller Wheel • Roller Index  (m³) / Dial Register (1 litre resolution)
Size & Connections
15mm (1/2″) to 50mm (2″) • BSPT Male Unions
Duty
Hot Water up to 130°C (150°C for short periods)
Output (optional)
Wired Pulse Output • GWFCoder® Mbus 
Accuracy
±3% at Qt Transitional Flow Rate
Contact UsGWF MTH - Multi Jet Hot Water Meter - PDF Datasheet

GWF MTH - Multi Jet Hot Water Meter

GWF WPD FS – Woltmann Hot Water Meter

The WPD FS is suitable for hot water applications temperatures up to 130°C. The meter can be installed in the vertical or horizontal position.

Type
Woltmann (Turbine) • Roller Index  (m³) / Dial Register
Size & Connections
DN50 to DN150 • PN16 Flange
Duty
Hot Water up to 130°C
Output (optional)
Wired Pulse Output
Accuracy
Class 3
Compliance & Approvals
MID-2004/22/EC
Contact UsGWF WPD FS - Woltmann Hot Water Meter - PDF DatasheetMID Compliant Meter

GWF WPD FS - Woltmann Hot Water Meter