1、 Working principle
Fire butterfly valve is a type of valve that uses circular butterfly plates as opening and closing components and rotates with the valve stem to open, close, and regulate fluid channels. The butterfly plate is driven by the valve stem, and if it rotates 90 degrees, it can complete one opening and closing. By changing the deflection angle of the butterfly plate, the flow rate of the medium can be controlled.
2、 Product Introduction
Our company produces two types of fire butterfly valves: handle fire butterfly valves and turbine fire butterfly valves. The valve body material is ductile iron, the butterfly plate material is chrome plated ductile iron, the sealing material is EPDM, and the shaft material is chrome plated 45 # steel. The production standard for fire butterfly valves is GB5135.6 Automatic Sprinkler Fire Extinguishing System Part 6: General Valves. The fire butterfly valve has a simple structure, small volume, and light weight, consisting of only a few parts. And it can be quickly opened and closed by simply rotating the handwheel, with simple operation and good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance for the medium to flow through the valve body, so the pressure drop generated by this valve is very small, thus having good flow control characteristics.
3、 Product Usage
The fire butterfly valve is installed on the system pipeline, mainly for cutting off and throttling due to its good flow regulation function and closing sealing characteristics. When repairing the pipeline network, close it. It has the following advantages:
a. Easy and quick opening and closing, labor-saving, low fluid resistance, and can be operated frequently.
b. Compact and lightweight, easy to disassemble and repair, and can be installed in any position.
c. Store the least amount of liquid at the pipeline outlet.
d. Under low pressure, good sealing can be achieved.
e. Good regulation performance.
4、 Product model and technical parameters
Applicable medium: clear water or fire foam mixture
Suitable temperature: -20~120 ℃
Nominal operating pressure: 1.6Mpa
6、 Installation and maintenance instructions
a. Before installation, carefully check that the valve is intact and undamaged.
b. During installation, the valve disc should be stopped in the closed position.
c. The opening position should be determined according to the rotation angle of the butterfly plate.
d. Butterfly valves can be installed on horizontal and vertical pipelines, and the installation position should ensure easy use, maintenance, and replacement.
e. Valves should be regularly inspected for wear on their sealing surfaces. If they are damaged or fail, they should be repaired or replaced in a timely manner.
Ordering Instructions
When ordering fire butterfly valves, please specify the product name, model, specifications, quantity, and required delivery date in the order.
2. The configuration of the fire butterfly valve includes: one fire butterfly valve, one user manual, and one certificate of conformity. If there are any changes or additions due to design requirements, please indicate them when placing an order. If other accessories are needed, they need to be ordered separately.