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In HVAC and water system, ball valves are used as automatic control valves. lt has adjustable fow ratio, high reliability and long service life. lt uses graphite to strengthen the valve body sealing ring and double EPDM valve stem sealing ring. lt has integrated valve distribution butterfy inside and is not afraid of reverse pressure difference. lt has the characteristic of equal percentage fow. Its high turn-off pressure is 1.4MPa. The rated working pressure is PN20. The maximum working pressure difference is 0.35Mpa. lt has a manual actuator short-circuit push button. Working temperature is -5 to 121℃. lt is suitable for central air conditioning, hot and cold water supply system, steam humidifcation, etc.
General | Value | General | Value |
Diameter range | DN15-DN150 | Rotation angle | 0-90° |
Connection mode | DNI5-DNS50 (female head conmetion) DN65-DN150 (fanged connetion) | Installation position | vertical installation |
Medium | Hot and cold water, unsaturated steam, 50% ethanol water, etc. | Flow characteristics | Equal percentage |
Medium temperature range | -5℃-120℃ | Bearing pressure of vale body | 1.6Mpa flang 2.0Mpa screw thread |
Adjustable ratio of valve | >100 | Material of valve body | Forged brass (thread)nodular cast iron (flange) |
Leakage rat | no leakage from the factory | Valve core material | 304 stainless steel |
Max. allowable pressure difference | 0.35Mpa | Valve stem material | 304 stainless steel |
Max. cut off pressure difference | 1.4Mpa | Sealing ring | EPDM |
Model | Diameter | Two-way flow | Power supply | Control signal | F auxiliary switch | Bracket | Actuator | ||
Two-way | Three-way | ||||||||
LFZ-DQ 15-V | LFZ-DQ 15-Y | DN 15 | 4.0 | AC/DC24V/230V | switch/adjust | one | set | High platform ball valve bracket with packing/ short ball valve bracket with packing | Actuator with 4NM |
LFZ-DQ 20-V | LFZ-DQ 20-Y | DN 20 | 4.0 | AC/DC24V/230V | switch/adjust | one | set | High platform ballvalve bracket with packing/ short ball valve bracket with packing | Actuator with 4NM |
LFZ-DQ 25-V | LFZ-DQ 25-Y | DN 25 | 10.0 | AC/DC24V/230V | switch/adjust | two | sets | High platform ball valve bracket with packing/ short ball valve bracket with packing | Actuator with 6NM |
LFZ-DQ 32-V | LFZ-DQ32-Y | DN 32 | 16.0 | AC/DC24V/230V | switch/adjust | two | sets | High platfom ball alve bracket with packing/ short ball valve bracket with packing | Actuator with 6NM |
LFZ-DQ 40-V | LFZ-DQ 40-Y | DN 40 | 25.0 | AC/DC24V/230V | switch/adjust | two | sets | High platform bal valve bracket with packing7 short ball valve bracket with packing | Actuator with 6NM |
LFZ-DQ50-V | LFZ-DQ50-Y | DN 50 | 40.0 | AC/DC24V/230V | switch/adjust | two | sets | High platform ballvalve bracket with packing/ short ballvalve bracket with packing | Actuator with 6NM |
LFZ-DQ 65-V | / | DN 65 | 63.0 | AC/DC24V/230V | switch/adjust | two | sets | High platform ball valve bracket with packing | Actuator with 16NM |
LFZ-DQ 80-V | / | DN 80 | 100.0 | AC/DC24V/230V | switch/adjust | two | sets | High platform ball valve bracket with packing | Actuator with 16NM |
LFZ-DQ100-V | / | DN 100 | 160.0 | AC/DC24V/230V | switch/adjust | two | sets | Ball valve bracket with packaging | Actuator with 24NM |
LFZ-DQ 125-V | / | DN 125 | 250.0 | AC/DC24V/230V | switch/adjust | two | sets | Ball valve bracket with packaging | Actuator with 24NM |
LFZ-DQ 150-V | / | DN150 | 400.0 | AC/DC24V/230V | switch/adjust | two | sets | Ball valve bracket with packaging | Actuator with 32NM |
Model | G | H(mm) | H1(mm) | L(mm) | Model | Flange indexing circle | L(mm) | D(mm) | H(mm) | n-d |
DN 15 | G1/2 | 184 | 37.5 | 60 | DN 65 | 145 | 97 | 105 | 136 | 4-18 |
DN 20 | G3/4 | 184 | 44 | 73 | DN 80 | 160 | 108 | 120 | 140 | 8-18 |
DN 25 | G1 | 189 | 47 | 89 | DN 100 | 175 | 120 | 145 | 104 | 8-18 |
DN 32 | G1-1/4 | 199 | 52.5 | 102.5 | DN 125 | 200 | 145 | 175 | 115 | 8-18 |
DN 40 | G1-12 | 208 | 57 | 113 | DN 150 | 230 | 165 | 205 | 138 | 8-18 |
DN 50 | G2 | 219 | 62 | 127.5 | ||||||
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