CCC certified smoke exhaust fire damper PFHF WSDc-K

1、 Product Definition

A valve installed on the pipeline of the mechanical smoke exhaust system, which is usually in an open state. When the temperature of the smoke in the smoke exhaust pipeline reaches 280 ℃ during a fire, it closes and meets the requirements of smoke leakage and fire resistance integrity for a certain period of time, playing a role in smoke isolation and fire resistance.

Smoke exhaust fire dampers are generally composed of components such as valve bodies, blades, actuators, and temperature sensors.

2、 Model Description

PFHF ①② - A × B A: nominal width of valve B: nominal height of valve

① - Product control mode W: Temperature sensor control automatic shutdown S: Manual control shutdown

Dc: Electric control electromagnet is turned off Dj: Electric control motor is turned off

Dq: Electric pneumatic mechanism closed

② - Product function code F: with air volume adjustment function Y: with remote reset function

K: Equipped with position signal feedback function after valve opening and closing in place

For example:

PFHF-WSDc-K-630 ╳ 400 indicates a signal feedback function with temperature sensor (280 ℃) automatic closing, manual closing, electric control electromagnet closing, and valve closing in place.

3、 Product Features

1. Low leakage and good airtightness;

2. Strong anti-corrosion performance and long service life;

3. Flexible opening and closing of valves, accurate position feedback signals;

4. Good fire resistance integrity.

4、 Performance parameters

1. Nominal pressure: ≤ 300Pa at ambient temperature;

2 Applicable media: air (smoke);

3 Leakage rate: a: At ambient temperature, the static pressure difference before and after the valve blade is 300 ± 15Pa,

Leakage per unit area ≤ 500m³/(m²)；

b: Within the specified fire resistance time (GB/T15930), the static pressure before and after the valve blade is 300 ± 15pa,

Leakage per unit area ≤ 700m³/(m²)；

4. Fire resistance time: ≥ 1.5 hours (GB/T15930).

5、 Appearance of smoke exhaust fire damper

6、 Specification and dimensions of smoke exhaust fire damper

Combination valve is a valve combination that has obtained the fire 3C certificate, and the combined valve meets the ventilation area (interface requirements);

When placing an order for a combination valve, the installation method of the valve (pipeline type, wall type, or other) must be informed;

In order to maintain consistency with the installation dimensions of the user, the company's products will not drill holes on the flange unless otherwise specified by the user.