Water Meter GMK

Water Meter GMK
The “GMK” Model Water Meters fall under the group of Inferential Meters and has Complete Dry-Dial, Direct Magnetic-Drive, Straight Line Reading and Multi Jet Principle. The water enters into the Meter through the inlet pipe and properly designed. Strainer, and affects its action upon the Vane Wheel. The particular advantage of this Meter is the Magnetic transmission directly from the Vane Wheel to the Register hermetically sealed, the Register is thus completely isolated from the water, and is incorporated in a Dry Dial and is provided with Magnet Protection Ring.

Dimensions มิติ (mm.)

Accurcy and Pressure Drop Curve

Optional Features
Externally Accessible Regulation Devices can be provided on request. Non Return Valve can be provided for 1/2”, 3/4”, 1” size Meters. Available with Logarithm Nozzles Measuring Chamber to attain more high sensitivity at the lowest flow rate.

Warm water version available for temperatures up to 90ºc (194ºF).

Determination of the Meter size
The bore of the instrument depends upon the flow rate to be metered and not the pipe size. Too large flow rate, a meter will result in continuous overloading and high pressure drop. An over-sized meter on the other hand will be less sensitive to small flow rates and inaccuracy may result.

Name of Part

Important Advantages

The hemetically Sealed Register Complete With contains Gears and Counter Wheel is completely isolated from water. Seizure of the Gears, staining of the Dial Plate, and condensation in the counter case are completely avoided. This means that there is greater advantages of operating safety, longer life, longer periods between sevicing,and hence minimum operation costs.
Magnet Protection Ring is provided. Magnet Drive is protected by Magnet Protection Ring so that Magnet Drive can not be badly influenced and stopped by another Magnet from outside of this Meter.
No moving parts in water, except Vane Wheel. The Vane Wheel is light in weight and rest on the pivot of stainless steel, and offers the magnetic operation. In repairing, the Vane Wheel is easily changed at the lowest cost. 
Straight Line Reading allows the flow quantity to be read from one litre by Digit. This means that the flow quantity is precisely and easily read from the smallest volume units without mistake. 
Sensitivity at the low flow. GMK Meters are designed to provide with best sensitivity at the flow rate and with precise accuracy that is preserved for long period, as the Stuffing Box and Gland Friction have been omitted. 
Pivot Star is provided. Pivot Star in the center of the Dial Plate is directly coupled with Vane Wheel; it serves to make a quick check of the flow sensitivity, and helps to detect the leakage in the water supply tube.
Easy to maintain at the lowest cost. The Register and Vane Wheel are an interchangeable unit at the lowest cost. 
Frost Protection Ring can be provided as required. When subjected to extreme pressure through water freezing, the ring shears. Thus the Register can slide easily upwards through the Head Case.

Technical Data

• Maximum Water Temperature : 5ºC - 60ºC
• Maximum Test Pressure 17.5 kgs/cm²
• Material of Body Casing : JIS-BC6 (Cu 85%,Sn 5%,Zn 5%,Pb 5%)

Dial of GMK