Velocity-type Woltman Vertical Helical Turbine Dry Type Water Meter

The WS type vertical rotor water meter is a velocity-type Woltmann water meter, suitable for medium and large diameter pipes from DN50 to DN200, and conforms to the ISO4064 national standard. The impeller is vertically arranged with low inlet and high outlet water flow. The stainless steel ball bearings support the movement, resulting in low friction loss, low starting flow, high metering accuracy, and wear resistance. The meter has a built-in stainless steel filter, resistant to impurities and general water quality, with low pressure loss and strong flow capacity. It can be equipped with a dry-type counter, is freeze-proof and condensation-proof, and supports photoelectric direct reading and NB-IoT remote transmission modules. It is widely used in community main meters, factory areas, and commercial building water supply and trade settlement, and is the mainstream choice for large-diameter, accurate metering.

 Product features/advantages

• Detachable metering cartridge, built-in strainer, effortless servicing;
• Hermetic register, magnetic coupling mechanism, sustain persistent distinct indication;
• Minimal threshold flow, minor head loss under high volumetric flow, superior to impeller type water meters;
• Adaptable for photoelectric direct-read telemetry & output water gauges; telemetric modules are configurable on demand, including reed contact, Hall sensor and pulse signal output.
• Performance parameters comply with ISO 4064 specifications.

Standard: GB/T 778 ISO4064

Water meter body material：gray iron, ductile iron, stainless steel, plastic body

Verification level standard：R160; R200

Working condition

• Water temperature: T30 T50
• Water pressure class: MAP10
• Pressure-loss class: ∆p63

Maximum permissible error

(1)From minimum flow-rate(Q1)inclusive to transitional flow-rate(Q2)exclusive±5%.

(2)From transitional flow-rate(Q2) to overload flow rate(Q4)±2%(Hot water meter ±3%)

Models and specification

 

 

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