Louver Damper Butterfly Valve

Home » Products » Louver Damper Butterfly Valve

Louver Damper Butterfly Valve

Product model: DBD/SBD
Product specification: DN300 ~ 3000mm
Nominal pressure: 0.1MPa
Applicable temperature: ≤300°C
Leakage rate: Common type ≤3%, Low leakage rate ≤1%
Applicable media: Air, flue gas, dust containing gas, flammable gas, etc.
Flange standard: GB/T9115-98
Connection size: GB2555-81PN2.5
Test standard: GB/T13927-92

Product Overview

The Louver Damper Butterfly Valve is a specialized flow control valve designed for regulating airflow in industrial systems. It features a louvered damper mechanism integrated with a butterfly valve, allowing precise control of air or gas flow in large ducts. Constructed for durability and efficiency, this valve is ideal for applications in power plants, ventilation systems, and exhaust management. Its robust design minimizes leakage and withstands high temperatures, making it suitable for heavy-duty environments where reliable and adjustable flow control is essential.

Product Features

Quick Operation: Butterfly valves can be opened or closed quickly, often using a lever or actuator, allowing efficient flow control. This is particularly beneficial in industries like HVAC systems, fire protection systems, and chemical processing, where rapid flow adjustments are essential.

Low-Pressure Drop: The streamlined disc design ensures minimal resistance to flow, reducing pressure drop across the valve.

Compact and Lightweight: Butterfly valves are smaller and lighter compared to other types of valves, making them easy to install and maintain.

Versatile Connection Options: Available in wafer, lug, flanged, double flanged, and grooved connections to accommodate a wide range of piping configurations.

Resilient or Metal Seat Options: Offers both soft seats (e.g., EPDM, PTFE) for low-pressure applications and metal seats for higher temperatures and pressures.

Manual or Actuated Operation: Can be operated manually using a lever or automated with electric, pneumatic, or hydraulic actuators.

Specification Parameters

Main Outer Size

DN	D	D1	L	L1	L2	b	n-d	Weight (kg)
280	324	306	160	570	300	8	Φ10	60
320	367	350	180	610	365	8	Φ10	70
360	416	394	180	650	365	8	Φ7	82
450	512	490	180	735	365	8	Φ10	95
500	572	550	200	835	365	8	Φ10	125
600	676	650	200	860	365	8	Φ12	155
180	230	205	160	465	275	8	Φ7	35
200	250	225	160	485	275	8	Φ7	40
250	310	280	180	535	275	8	Φ8	45
280	360	320	180	565	275	8	Φ10	50
315	395	355	180	650	365	8	Φ12	60
355	435	395	180	690	365	8	Φ12	75
400	500	450	180	735	365	8	Φ12	85
450	550	500	180	780	365	8	Φ12	90
500	620	560	200	900	365	12	Φ12	100
560	680	620	200	1000	425	12	Φ12	125
630	750	690	200	1070	425	12	Φ12	150
710	830	770	260	1150	425	12	Φ12	180
800	920	870	260	1240	480	12	Φ15	200
900	1040	970	260	1340	480	12	Φ15	250
1000	1110	1065	280	1440	480	12	Φ15	300
1110	1220	1170	280	1650	480	12	Φ15	350
1200	1250	1190	280	1740	480	12	Φ15	400
1400	1520	1470	320	1940	480	16	Φ15	500
1600	1700	1600	320	2140	480	16	Φ15	600
1800	1900	1800	420	2340	640	16	Φ19	750
2000	2122	2060	420	2540	640	16	Φ19	800
2200	2300	2260	450	2740	640	16	Φ19	900
2500	2600	2560	450	3040	640	16	Φ19	1000
2800	2900	2860	500	3340	640	16	Φ19	1200

Specification Applications

Industries

Water Treatment Plants: Used in water distribution and control systems for potable and wastewater treatment.
Oil & Gas Industry: Suitable for regulating the flow of crude oil, natural gas, and refined products.
Chemical Industry: Ideal for controlling the flow of chemicals, acids, and other aggressive fluids.
HVAC Systems: Commonly used in heating, ventilation, and air conditioning systems for regulating air or water flow.
Food & Beverage Industry: Suitable for sanitary and non-sanitary applications that require frequent operation and cleaning, thanks to corrosion-resistant materials and ease of cleaning.

Specific Applications

Cooling Water Systems: Controls the flow of water for cooling applications in industrial facilities.
Fire Protection Systems: Used in fire sprinkler systems as control valves to regulate water supply.
Process Pipelines: Ideal for modulating or isolating flow in pipelines carrying oil, gas, or chemicals.
Air Flow Regulation: Used in HVAC systems to regulate air flow, ensuring efficient operation of heating and cooling units.

Installation Instructions

Verify the valve size, pressure rating, and material compatibility with the pipeline and medium before installation.
Ensure proper alignment of the butterfly valve in the pipeline to avoid seat or disc damage.
Use appropriate flange gaskets and follow standard torque tightening procedures for flanged connections.
For wafer or lug connections, ensure correct bolt alignment to avoid stress on the valve body.
Test the valve for proper operation to ensure the disc moves freely without obstruction. If the disc does not move freely, check for proper alignment and inspect for debris that may be causing the obstruction. If issues persist, further troubleshoot by adjusting alignment or cleaning the valve thoroughly to remove any contaminants.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

Get In Touch

Discover our premium valve solutions and boost your efficiency. Contact
us now to find out how we can support your needs with top-quality
products and exceptional service.

Call Us On

0577—86938599

Email Us

[email protected]

Your Trusted Partner for High-Quality Valve Solutions