70 degree fire damper/Characteristics of 280 degree smoke exhaust valve, smoke exhaust fire damper, air supply outlet, and smoke exhaust outlet: Depending on different occasions, the actuator can be divided into manual, electric semi-automatic, fully automatic, and remote control.

Purpose: Fire prevention, smoke prevention, and exhaust in air conditioning of high-rise civil buildings.

Specification: 100 × 100~1250 × 2000mm

Shangyu Yijie produces and sells check valves, electric fire dampers, remote control smoke exhaust valves, fire vents, remote control multi leaf air supply vents, plate smoke exhaust vents, electric fire dampers, 70 degree fire dampers, 280 degree fire dampers, smoke exhaust valvesCheck valve, electric/manual regulating valve, steel butterfly valveRemote control of multi blade air supply and exhaust ports, manual and electric control of multi blade regulating valves. Circular square steel butterfly valves and other smoke exhaust fire dampers, smoke exhaust valves, fire vents, multi leaf smoke exhaust vents, electric control valves, manual control valves, multi leaf air supply vents, check valves, impedance composite mufflers, micro perforated mufflers, soundproof static pressure boxes, soundproof louvers

This website is:Check valve, electric/manual regulating valve, steel butterfly valve

Multi blade regulating valve: It mainly consists of a valve body, blades, and operating mechanism. The valve body and blades are made of high-quality cold-rolled plates and bent into shape by a bending machine. The product is mainly used for fresh air regulation and exhaust air regulation in ventilation and air conditioning systems in industrial plants and civil buildings, as well as air purification projects. It can adjust the air flow and can also be used for closing. The regulating valve has good sealing performance, and the cross-sectional size of the valve is made according to the national ventilation standard duct size. The regulating valve is divided into manual and electric types. When not specified in the order, it is default to manual.

The multi leaf control valve is suitable for fresh air regulation and exhaust air regulation in ventilation and air conditioning systems of industrial plants and civil buildings, as well as air purification projects. It can be used for both air flow regulation and closing. Through experimental testing, it has been determined that the regulating valve has good air tightness performance, with a relative air leakage rate of around 5%.

There are two types of regulating valves: manual and electric. The cross-sectional size of the valve is made according to the national ventilation standard duct size. There are two types of manual break handle and handwheel. The insulation type regulating valve is equipped with a 35mm insulation layer on the inner side of the connecting rod, and the insulation material is polystyrene. It is easy to install on site and has a beautiful appearance.

Suitable for regulating air volume in air conditioning ducts, it can adjust air volume within the range of 0-90 °, easy to operate, flexible in structure, with a valve body thickness of 150mm, and available in both ordinary and insulation forms.

The check valve is installed in the air duct. When the air is ventilated, it opens due to the wind pressure. When the air supply stops, the valve automatically closes due to the weight of the blades or heavy hammer. The product is divided into two types: horizontal and vertical installation on the air duct. The purpose of using a check valve is to prevent gas backflow when the fan rotates, and it is required that the wind speed in the air duct should not be less than 8 meters per second; The check valve plate is made of aluminum, which is lightweight, flexible to open, and can prevent fire and explosion. On the horizontal curved shaft, there is a variable speed heavy hammer installed to adjust the upper valve plate and make the valve open flexibly.

T303 check valve

The check valve is installed in the air duct. When the air is ventilated, it opens due to the wind pressure. When the air supply stops, the valve automatically closes due to the weight of the blades or heavy hammer. T303-B is used on horizontal air ducts; T303-Z is used on vertical ducts, with a valve body thickness of 300mm.

Instructions:

1. The purpose of this device is to prevent airflow backflow when the fan rotates on its own;

2. The wind speed in the air duct must not be less than 8 meters per second.