1.Description
The retard chamber is a cylindrical water storage container with water inlet and outlet, which is an important part of the wet alarm valve device. Its role is to prevent system water flow pressure fluctuations and cause false alarms of hydraulic alarms.
Product standard: GB5135.2 "Automatic sprinkler system Part 2: Wet alarm valve, retarder, hydraulic bell"
Design Specification: GB50084 "Design Specification for Automatic Sprinkler System"
Acceptance specification: GB50261 "Code for construction and acceptance of automatic sprinkler system"

2.Working principle
The lower end of the retarder has a water inlet, which is connected with the alarm port of the alarm valve, and has a water outlet at the upper end to connect the hydraulic alarm bell. Due to the fluctuation of the water supply source pressure of the system, the valve flap can be instantly opened, and the water flow first enters the retarder through the groove and the small hole on the seat. Since the water source pressure fluctuates for a short time, the valve flap can be automatically reset automatically. (closed), so the amount of water entering the retarder is very small, the water can be collected by the retarder, and discharged through the bottom drain, the buffering time of the retarder, avoiding the fluctuation of the water flow pressure and causing the hydraulic alarm Call the police.

3. The main technical parameters
(1) Alarm delay time: 5~90S; drainage time ≤5min
(2) Volume: 2L, 3.5L
(3) Material: stainless steel
(4) Dimensions: