Main parts:

1. Valve body: The valve plate is made of steel plate with a thickness of ≥ 2.0mm, and the surface of the valve body is flat, straight, and free of any tilting or warping. The weld surface of the valve is smooth, flat, and uniform, without defects such as slag inclusion or looseness. The surface of the valve body is treated with anti-corrosion measures. The surface of each component of the valve is free of cracks, pressure pits, obvious bumps, hammer marks, burrs, and other defects.

2. Blade: Made of high-quality steel plate.

3. Blade shaft: Made of Φ 12mm steel shaft.

4. Shaft sleeve: Copper shaft sleeve is used.

5. Temperature fuse: The melting temperature of the temperature fuse is 70 ℃ (280 ℃), which is approved for production and has passed inspection.

6. Manual closing: When manually pulling the rope to close, the action is sensitive and reliable. After closing, the handle resets normally and is sensitive and reliable. The rope rotates flexibly without getting stuck.

7. Electric closing: When passing through DC24V/0.7A current, the smoke and fire damper can automatically close.

Advantages:

Excellent material selection, thickened valve body: Made of high-quality thickened plates, corrosion-resistant, high-temperature resistant, high hardness, and not easily deformed.

Complete specifications: Different materials and specifications can be customized according to customer needs.

Anti corrosion and rust prevention: The sheet adopts hot-dip galvanizing process, which has good corrosion resistance and is suitable for various environments.

Craftsmanship: The valve body is well formed, with smooth seams and good sealing.

Easy to operate: Simple to operate, flexible to drive, easy to install.