Van báo động DN150 Changder ADV911O chuẩn UL/FM có kiểm định

– AVD 911A 4″ Model A flanged end vertical installed alarm check valve
– AVD 941O 6″ Model A flanged end vertical installed alarm check valve
– The valve is made in accordance with UL 193 Alarm Valves for fire-protection service
– Material cast iron ASTM A48 class No35
– Rated pressure 175psi, test pressure 350psi
– Marking UL LISTED 3S58 A 175psi 4″/6″ ALARM CHECK VALVE
– Installation flange dimensions ANSI B16.1 class 125/ANSI B16.5 class 150
– AVD1911N Model A retard chamber, which is made in accordance with UL193.
– Material cast iron ASTM A48 class No35
– Marking UL LISTED 3S58 RETARD CHAMBER MODEL A
– Installation vertical 1/2 NPT(PT) thread female inlet 3/4 NPT(PT) female thread outlet and 1/2 NPT(PT) female thread drain
– AVD2911N Model A water motor gong, which is made in accordance with UL193.
– Material water motor aluminum alloy ASTM B26 356.0, gong shell aluminum alloy ASTM B209 6061
Marking UL MODEL A DRAIN on water motor.
– SPRINKLER ALARM
– FIRE PROTECTION EQUIPMENT CHANG DER
– FIRE PROTECTIONS CORP. WHEN BELL RINGS
– CALL FIRE DEPT on gong shell.