DN20mm water meter 25l/hr to 5000l/hr with Nominal Discharge of 2500l/hr or 4000l/hr. DN25mm meter 35l/hr to 7000l/hr. DN40mm water meter 50l/hr to 10000l/hr. Installation: The should be capable of being installed in a vertical, included and horizontal without loss of accuracy. The material used shall be of adequate strength and durability. In Material of the Water Meter: particular, The material used shall not be adversely affected by water temperature variations within the working temperature range i.e. water meters have to endure a water temperature of 0 to ºC 50 ºC The material should be resistant to normal exposures. The meter body shall be brass or (co-)polymer, NOT plastic. The meter may have brass threads.(The meter body material to be specified in the brochure) All parts of a water meter in contact with the water flowing through it shall be manufactured from materials which are inert with water, non-toxic and The material used shall be resistant to internal and external corrosion. A water meter indicating device shall be protected by a transparent window. A cover of a suitable type may also be provided as additional protection. Where there is a risk of condensation forming on the underside of the window of a water meter indicating device, the water meter shall incorporate devices for prevention or elimination of condensation. The units should be permanently sealed and frost, moisture and dust proof. A water meter may be fitted with an adjustment device. Additional Technical Specifications The following technical specifications should also be incorporated: In-built sieves/strainers shall be incorporated Threaded meters shall be supplied complete with a set of connectors that are made of copper alloy or equivalent material resistant to corrosion, rust and damage due to shock or vibration. The connectors shall be threaded to the correct male size, comprising cap nuts, linings and fibber/rubber sealing washers. The meter linings shall have adequate provisions to safeguard against tampering. The nominal flow rate and diameter shall be marked on the meter.
DN20mm water meter 25l/hr to 5000l/hr with Nominal Discharge of 2500l/hr or 4000l/hr. DN25mm meter 35l/hr to 7000l/hr. DN40mm water meter 50l/hr to 10000l/hr. Installation: The should be capable of being installed in a vertical, included and horizontal without loss of accuracy. Material of the Water Meter: The material used shall be of adequate strength and durability. In particular, The material used shall not be adversely affected by water temperature variations within the working temperature range i.e. water meters have to endure a water temperature of 0 ºC to 50 ºC The material should be resistant to normal exposures. The meter body shall be brass or (co-)polymer, NOT plastic. The meter may have brass threads.(The meter body material to be specified in the brochure) All parts of a water meter in contact with the water flowing through it shall be manufactured from materials which are inert with water, non-toxic and The material used shall be resistant to internal and external corrosion. A water meter indicating device shall be protected by a transparent window. A cover of a suitable type may also be provided as additional protection. Where there is a risk of condensation forming on the underside of the window of a water meter indicating device, the water meter shall incorporate devices for prevention or elimination of condensation. The units should be permanently sealed and frost, moisture and dust proof. A water meter may be fitted with an adjustment device. Additional Technical Specifications The following technical specifications should also be incorporated: In-built sieves/strainers shall be incorporated Threaded meters shall be supplied complete with a set of connectors that are made of copper alloy or equivalent material resistant to corrosion, rust and damage due to shock or vibration. The connectors shall be threaded to the correct male size, comprising cap nuts, linings and fibber/rubber sealing washers. The meter linings shall have adequate provisions to safeguard against tampering. The nominal flow rate and diameter shall be marked on the meter.
001-water-meters.docx