The flue check valve is also known as a reverse flow valve, check valve, back pressure valve, and one-way valve. This type of valve is an automatic valve that automatically opens and closes by the force generated by the flow of the medium itself in the pipeline.

Plastic flue check valve

1) Original flue anti odor product, material: plastic structure, an iron column runs through the valve blade, the valve body is square, and needs to be perforated for installation, with average anti smoke effect.

2) The flue check valve is a multifunctional check valve composed of ABS plastic as a whole, and the valve blades are a whole. The base and valve body are divided into two parts, which are circular. There are three types of apertures: 150mm-160mm and 180mm, which can be installed on glass or public flue without the need for punching. Just use adhesive.

3) The valve body of the flue check valve is made of plastic, and the blades are composed of two parts. This type of check valve is usually installed inside the range hood, and better range hoods generally come with this type of check valve. Smoke prevention effect, medium.

Detailed introduction to the types and installation matters of flue check valves

Stainless steel flue check valve

1) The manufacturing principle of the flue check valve is the same as that of the original plastic check valve. The whole is composed of stainless steel or stainless iron. It requires drilling for installation, with the advantage of providing one-way fire protection and average smoke prevention effect.

2) The flue check valve is a new type of snap fit check valve, consisting of stainless steel or stainless steel as a whole. The valve blade type hinge type has better sealing performance. Installation is simpler, but the downside is one-way fire protection. Unable to meet the requirements of GB Fire Department.

Fire resistant flue check valve

The fireproof flue check valve is a current and reliable product for flue check valves, fully complying with the regulations of the GB Environmental Protection Administration and the GB Fire Protection Administration.

Material: Steel

Appearance: Red paint, classic and fashionable

Structure: Valve blade hinge design, with concave blades and convex valve body to achieve super strong sealing performance.

Fire resistance performance: The new fire protection design has a 75 degree automatic detachment fuse, which is simple and practical.

Installation: Snap on easy installation. Convenient and fast.

Installation position of flue check valve

1. The entrance of the smoke exhaust fan main pipe should be set

2. The area passing through the fire compartment should be equipped with