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product

2 Wire Shut off Valve Smart Gas Meter Fast-close Valve

Model No.: RKF-4

Short Description:

RKF-4 is a shut off motor valve and compatible with various specifications of gas meters. It owns features, such as small body, low pressure loss, durability and reliability, explosion-proof performance, low power consumption, short switch time, etc. All our products have the ATEX explosion-proof citification and can customize based on customers’ requirements.


Product Detail

Product Tags

Installation Location

The motor valve may be installed in the smart gas meter.

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Product Advantages

Built-in screw Motor Valve’s Advantages
1. Low pressure drop
2. Stable structure Max pressure can reach 150mbar
3. Small shape, easy installing
4. Low costs

Instruction For Use

1. This type of valve has two lead wires to supply power to the valve. The red wire is connected to positive power (or negative power), and the black wire is connected to negative power (or positive power) to open the valve (specifically, it can be set according to customer needs).
2. The minimum drive voltage of the valve shall not be lower than 3V. If the current limit design is in the process of opening and closing the valve, the current limit value shall not be lower than 130mA.
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.

Tech Specs

Items requirements Standard
Working medium Natural gas,LPG  
Flow range 0.0166m3/h  
Pressure drop 015KPa  
Meter suit G1.6/G2.5  
Operating voltage DC33.9V  
ATEX ExicⅡBT4 Gc EN 16314-2013 7.13.4.3
Operating temperature -25℃60℃ EN 16314-2013 7.13.4.7
Relative humidity 5%90%  
Leakage 2KPa or 7.5ka <1L/h EN 16314-2013 7.13.4.5
Motor electric performance 21±10%Ω/14±2mH  
Current-limited resistance 9±1%Ω  
Max current ≤140mA(DC3.9V)  
opening time ≤0.8s(DC3V)  
Closing time ≤0.8s(DC3V)  
Pressure loss With meter case≤200Pa EN 16314-2013 7.13.4.4
endurance ≥10000 EN 16314-2013 7.13.4.8
Installation location Inlet  

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