ASAHI Vertical Multi-Jet Water Meter 1/2" (GMK-VD-15)

The GMK-VD model is particularly designed for vertical installation of down flow water direction. The GMK-VD would provide the better performance of accuracy compared to other water meter types when installing in vertical pipeline. This water meter is considered as multi jet type, which is also categorized in GMK group of ASAHI brand. 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.

Important Advantages

• The hermetically Sealed Register Complete which 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 servicing, and hence minimum operating costs.
  
• Magnet Protection Ring is provided. Magnet Drive is protected by Magnet Protection Ring so that
• Magnet Drive cannot 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.
  
• Pilot Star is provided. Pilot 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.
  
• The lid is rotatable. Which is specially designed for vertical installation.

Technical Data

• Dynamic range : 80 (Q3 /Q 1)
• Max.Flow rate 1 Hr/day : 3.125 (Q4-m3/h)
• Pressure loss at permanent flow rate : < 0.63 (bar)
• Permanent flow rate: 2.5 (Q3-m3/h)
• Transition flow rate : 0.05 (Q2-m3/h)
• Minimum flow rate : 0.03125 (Q1-m3/h)
• Staring flow rate : 12(l/h)
• Smallest Digital Readable Amount : 0.02 L Max.
• Digital Registration : 9,999 m3
• Overall length with coupling : 250 mm
• Working Water Temperature : 5°C 50°C
• Maximum Test Pressure : 20 bar
• Material of Body Casing : Brass Body