| Scope of application | Technical Specifications | ||
| Suitable for dual position on/off switching of heating and combustion medium pipelines for urban gas, liquefied petroleum gas, natural gas and other multi plant gases, and for automatic temperature control actuators. Widely used in gas pipeline networks, gas processing plants, gas stations, thermal power plants, steel enterprises, coking plants, biopharmaceuticals, petrochemicals, industrial furnaces, textile printing and dyeing, printing equipment, chemical equipment and other industries’ gas heating control systems. | Medium temperature: -5 ℃ to 80 ℃ | ||
| Work pressure: 0-8 bar | |||
| Operation mode: Direct acting | |||
| Working type: normally closed, normally open, explosion-proof | |||
| Valve body material: brass, cast iron | |||
| Sealing material: NBR, FKM | |||
| Function Options | Technical Specifications | |||
| code name | Function Options | Functional Description | Coil parameters: AC220V 110V, DC24V 12V | |
| NO | Normally closed type | Power on valve open, power off valve closed | Protection level: IP54 (ordinary coil) IP65 (explosion-proof coil) H-level | |
| K | Normally Open | Power on valve closed, power off valve open | Rated power: | DN15～25mm，AC 20VA,DC 19W |
| E | Explosion-proof type | Explosion proof grade: ExdII BT4 | DN35～50mm，AC 46VA,DC 30W | |
| Optional: NPT thread, RC thread (customized) | DN65～100mm，AC 50VA,DC 30W | |||
| Specification parameter table (threaded connection) | ||||||
| Model | Interface G | Diameter mm | Cv value | L | H/Normally open | Work pressure bar) |
| LD7715 | 1/2 | 15 | 4.5 | 69 | 117/135 | 0～4～8 |
| LD7720 | 3/4 | 20 | 7.5 | 73 | 124/142 | 0～4～8 |
| LD7725 | 1 | 25 | 12 | 99 | 135/150 | 0～4～8 |
| LD7732 | 11/4 | 32 | 22 | 115 | 154/190 | 0～4～8 |
| LD7740 | 11/2 | 40 | 30 | 120 | 162/160 | 0～4～8 |
| LD7750 | 2 | 50 | 48 | 154 | 185/215 | 0～4～8 |
| Specification parameter table (threaded connection) | ||||||||
| Model | Diameter mm | Cv value | L | H/Normally open | D | D1 | n-Φd | Work pressure（bar) |
| LD7725F | 25 | 12 | 135 | 166/180 | 110 | 85 | 4-Φ14 | 0～4～8 |
| LD7732F | 32 | 22 | 142 | 204/235 | 135 | 100 | 4-Φ18 | 0～4～8 |
| LD7740F | 40 | 30 | 149 | 217/240 | 145 | 110 | 4-Φ18 | 0～4～8 |
| LD7750F | 50 | 48 | 164 | 224/255 | 156 | 125 | 4-Φ18 | 0～4～8 |
| LD7740CF | 40 | 30 | 175 | 220 | 110 | 150 | 4-Φ18 | 0～4～8 |
| LD7750CF | 50 | 48 | 220 | 240 | 125 | 165 | 4-Φ18 | 0～4～8 |
| LD7765CF | 65 | 55 | 258 | 330 | 145 | 185 | 4-Φ18 | 0～2 |
| LD7780CF | 80 | 85 | 280 | 330 | 160 | 200 | 4-Φ18 | 0～2 |
| LD77100CF | 100 | 129 | 354 | 390 | 180 | 220 | 4-Φ18 | 0～2 |
| LD77100ACF | 100 | 129 | 350 | 408 | 220 | 180 | 8-Φ18 | 0～2 |
| LD77125ACF | 125 | 180 | 400 | 424 | 250 | 210 | 8-Φ18 | 0～2 |
| LD77150ACF | 150 | 250 | 480 | 515 | 285 | 240 | 8-Φ22 | 0～2 |
| LD77200ACF | 200 | 420 | 600 | 540 | 340 | 295 | 8-Φ22 | 0～2 |
| LD77250ACF | 250 | 660 | 730 | 573 | 395 | 350 | 12-Φ22 | 0～2 |
| LD77300ACF | 300 | 890 | 850 | 608 | 445 | 400 | 12-Φ22 | 0～2 |
| LD77350ACF | 350 | 1060 | 98 | 700 | 505 | 460 | 16-Φ22 | 0～2 |
optimization suggestions
*The fluid contains impurities, and a filter screen (mesh ≥ 60) should be installed in front of the valve, and the fluid should not have any solidification or crystallization phenomenon.
*The direction of the valve body marking must be consistent with the flow direction of the medium
*The working pressure of coils providing special voltage may vary, please be sure to consult our factory first.
*We respect your confidentiality and all information are protected.
I’m Leo, the head of sales team at Huaxiang. Me and my team would be happy to meet you and learn all about your business, requirements and expectations.
*We respect your confidentiality and all information are protected.
I’m Leo, the head of sales team at Huaxiang. Me and my team would be happy to meet you and learn all about your business, requirements and expectations.
