Motorized Ball Valve Normally Closed

Motorized Ball Valve Normally Closed

A Motorized Ball Valve Normally Closed (NC) is a type of motorized valve that uses an electric actuator to control the opening and closing of the valve. In the normally closed configuration, the valve remains closed when there is no power or signal applied to the actuator. The valve opens when the actuator is energized, allowing fluid or gas to pass through. This type of valve is commonly used in systems where flow needs to be automatically stopped by default and only opened when required, such as in safety-critical applications or automated processes.
Electrically Operated Ball Valve

 

A Motorized Ball Valve Normally Closed is a reliable and efficient solution for automatic flow control, offering precise, remote, and automated operation. Its failsafe design ensures the valve remains closed when no power is supplied, making it ideal for applications where stopping flow in the event of a power failure is critical. With its energy efficiency, durability, and versatility, this valve type is suitable for a wide range of industries, including HVAC, water treatment, chemical processing, and food production. By choosing a motorized ball valve normally closed, businesses can improve system reliability, reduce energy consumption, and enhance overall process automation.

 

 

motorized ball valve normally closed

 

Product parameters
  • Power supply: 24VAC ±10% 50/60Hz
  • Torque: 3.5N.m
  • Nominal pressure: 1.6MPa
  • Travel time: 42~47 seconds (50Hz), 34~39 seconds (60Hz)
  • Working medium: water, fluid temperature 5~95℃
  • Power: <0.5W (stop), <3W (movement), 24VAC power supply
  • Analog input: 0(2)~10V (input impedance>100KΩ), 0(4)~20mA (input impedance=500Ω)
  • Analog feedback: 0(2)~10V (load impedance≥100KΩ)
  • Working environment temperature: -10~+55℃
  • Storage environment temperature: -30~+60℃
  • Working environment humidity: ≤95% RH without condensation

 

Technical Parameters

 

 

Ordering model Product model Valve type Diameter Thread size Kv value Maximum closing pressure
kPa
Dimensions
L H
15260 DQF-B-215*DQQ-B1K-220 2 port 15 G1/2 5.6 600 60 30
15265 DQF-B-220*DQQ-B1K-220 2 port 20 G3/4 9.5 600 67 35
15271 DQF-B-225*DQQ-B1K-220 2 port 25 G1 9.5 500 89 38
15273 DQF-B-315*DQQ-B1K-220 3 port 15 G1/2 5.6 600 60 30
15278 DQF-B-320*DQQ-B1K-220 3 port 20 G3/4 9.5 600 67 35
15283 DQF-B-325*DQQ-B1K-220 3 port 25 G1 13 500 89 38
15230 DQF-B-215*DQQ-B1K-220 2 port 15 G1/2 5.6 600 60 30
15235 DQF-B-220*DQQ-B1K-220 2 port 20 G3/4 9.5 600 67 35
Note: The above table is the commonly used recommended models, please consult for details.

 

 

Features

 

 

  • The structure is easy to install, significantly reducing installation expenses
  • It offers a large closing pressure differential, guaranteeing a tight and leak-proof seal
  • Water flows effortlessly without any obstructions, and its KVS value is much higher than that of typical two-way valves
  • The valve functions smoothly and effectively prevents water hammer, ensuring the system remains stable and protected.

 

 

 

 

FAQ

 

 

 

Q:How does it help reduce installation costs?
A:It features a simple design that makes installation quick and easy, which helps to significantly reduce overall installation expenses.

 

Q:How does it ensure a tight and secure seal?
A:It provides a high closing pressure differential, which guarantees a secure, leak-free seal, even in challenging conditions.

 

Q:What makes it more efficient than standard valves?
A:It allows water to flow seamlessly without obstruction, and its KVS value is significantly higher than that of standard two-way valves, ensuring better flow efficiency.

 

Q:How does it protect the system from water hammer?
A:The valve operates smoothly and is specifically designed to prevent water hammer, maintaining the stability and protection of the entire system.

 

 

 

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