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product

Motorized Shut-off Valve for Industrial Gas Meter G25

Model No.: RKF-5-G25

Short Description:

RKF-5 is a special valve installed in a gas meter to control gas disconnection for industrial. Adopting a unique shape design, it has high reliability, low pressure loss, and controllable cost. At the same time, we use the process of gold plating on the motor commutator, which greatly improves the corrosion resistance of the valve.


Product Detail

Product Tags

Installation Location

RKF-5 Istallation

Product Advantages

Built-in B& Motor Valve’s Advantages
1.Good sealing, and low pressure drop
2.Stable structure Max pressure can reach 200mbar
3.Small shape, easy installing
4. Compatible with many types of gas meter

Instruction For Use

1. The lead wire of this type of valve has three specifications: two-wire, four-wire or six-wire. The lead wire of the two-wire valve is only used as the valve action power line, the red wire is connected to positive (or negative), and the black wire is connected to negative (or positive) to open the valve (specifically, it can be set according to customer requirements). For four-wire and six-wire valves, two of the wires (red and black) are the power supply wires for valve action, and the remaining two or four wires are status switch wires, which are used as signal output wires for open and closed positions.
2. Power supply time requirements: when opening/closing valve, after the detection device detects that the valve is in place, it needs to delay 2000ms before stopping the power supply, and the total operating time is about 4.5s.
3. The motor valve opening and closing can be judged by detecting the locked-rotor current in the circuit. The locked-rotor current value can be calculated according to the working cut-off voltage of the circuit design, which is only related to the voltage and resistance value.
4. It is recommended that the minimum DC voltage of the valve should not be less than 3V. If the current limit design is in the valve’s process of opening and closing, the current limit value should not be less than 120mA.

Tech Specs

Items requirements Standard

Working medium

Natural gas,LPG

Flow range

0.1~40m3/h

Pressure Drop

0~50KPa

Meter suit

G10/G16/G25

Operating voltage

DC3~6V

ATEX

ExibⅡBT3 Gb

EN 16314-2013 7.13.4.3

Operating temperature

-25℃~55℃

EN 16314-2013 7.13.4.7

Relative humidity

≤90%

Leakage

Leakage ≤0.55dm ≤ 30KPa

EN 16314-2013 7.13.4.5

Motor resistance

20Ω±1.5Ω

Motor inductance

18±1.5mH

Open valve average current

≤60mA(DC3V)

Blocked current

≤300mA(DC6V)

Opening &closing time

≈4.5s(DC3V)

Pressure loss

≤ 375Pa(with valve base gauge pressure loss )

EN 16314-2013 7.13.4.4

Endurance

≥10000 times

EN 16314-2013 7.13.4.8

Installation location

Inlet


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