Electric Flange Ball Valve (Type LQ)

The Electric Flange Ball Valve is a 90° rotary valve with excellent sealing, high flow capacity, and low flow resistance. Its simple structure ensures easy maintenance and long service life. The valve body's straight-through design matches the pipeline diameter, allowing minimal media loss. Equipped with LQ actuators, it is suitable for applications requiring strict sealing, including control of gases, liquids, steam, and media with fibrous impurities. Widely used in petroleum, chemical, metallurgical, light industry, papermaking, power plants, refrigeration, and other industries.

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Product Details

Precision in Flow Control, Excellence from Zhongyuan

Product Features
Structural Configuration
Main Performance Parameters

Product Features

• Low fluid resistance - Ball valves have minimal flow resistance, even reduced-bore types maintain low pressure drop
• Thrust bearings reduce stem torque for smooth long-term operation
• PTFE seat seals provide pressure-energized sealing (performance improves with medium pressure)
• Rotating stem design maintains packing integrity with pressure-enhanced sealing
• Self-lubricating PTFE materials minimize ball friction, extending service life
Structural Configuration

Main Performance Parameters

Size		Configuration	D1	H2	H1	L	n-Φ
mm	in	Configuration	1.6MPa	H2	H1	L	1.6MPa
15	1/2"	LQ1-6	65	297	48	130	4-Φ14
20	3/4"		75	303	53	140
25	1"		85	331	57	150
32	1 1/4"		100	351	67	160	4-Φ18
40	1 1/2"		110	396	77	180
50	2"	LQ1-10	125	443	80	200
65	2 1/2"	LQ2-20	145	505	90	220
80	3"	LQ2-24	160	527	98	250	8-Φ18
100	4"	LQ3-50	180	583	107	280
125	5"	LQ3-50	210	708	122	320
150	6"	LQ4-110	240	691	140	360	8-Φ23
200	8"	LQ4JS-200	295	850	177	400	12-Φ23
250	10"	LQ4JS-250	355	866	212	450	12-Φ25