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BK-G4 Credit Meter with 1″ BS746 Connections

The residential diaphragm gas meter BK-G4 meet the highest demands with respect to accuracy of measurement and safety. It incorporates both innovative features and gas measurement know-how of many decades. The BK-G4 is supplied in folded form as co-axial and two-pipe version.
The stroke of the diaphragms is pneumatically stopped and therefore ensures both low bearing loads and a quiet operation. The synthetic diaphragm is dimensionally stable and stadium shaped.
High-grade materials and components as well as the patented curve K-System ensure a high quality standard. The K-System perfectly coordinates the movement of the valves with the actual gas flow to the measuring chambers. This ensures excellent linearity even with utilizing small valves.
Due to the optimised slides, Qmin of BK-G4 is stable and the gas meter is not susceptible to contamination (RPF 0.65 to BS4161). The measuring unit is adjusted by a patented needle-and-scale system. Although the design of the BK-G4 is very robust, the gas meters are still measuring instruments and as such should be handled with care.


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Key Features
• MID conformity approved by PTB
• Approved to EN 1359 by German DVGW
• EU Approval by German PTB
• Flow rates from 0.04 m3/h to 6 m3/h
• Cyclic Volume 2 liters
• Firesafe (HTB) up to 0.1 bar according to
EN 1359
• Maximum working pressure 0.5 bar
• High accuracy and long-term stability
• Powder coated pale grey to RAL 7035
• Standard pulse magnet;
retrofitable LF pulser (l=0.01 m3/pulse)
• Not susceptible to contamination
(RPF = 0.65)
• Temperature range:
Standard: -10 °C to +40 °C,
other temperatures on request
• Temperature compensation available
• Intelligent index technology,
Chekker system, Absolut-ENCODER and
radio applications
Delivery Information

You will find your packages in safe hands with our courier partners UPS and DX Freight.

For all standard sized items (ie singular meter boxes, hoses, changeovers) we will ship with UPS. You can track UPS orders here: – and for bulky items we will ship with DX and you can track your package here: –


STANDARD  –  2 to 5 Business Days  –  £7.50

NEXT DAY  –  24-48 Hours (must be placed before 1pm to get next day)  –  £10.00

HIGHLANDS & ISLANDS  –  2 to 5 Business Days  –  £15.00

FREE DELIVERY  –  2 to 5 Business Days – Over value must be over £75.00

Please note this is a weekday service on orders placed before 1pm ( Monday to Thursday).
If you have selected Next Day Delivery, orders placed after 1pm on Thursday will be delivered on the following Monday. (provided it is not a bank holiday).

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