Water butterfly valve

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Gear Operated Butterfly Valve - Durable & Reliable Supplier

Gear Operated Butterfly Valve – Product Description

A gear operated butterfly valve is a type of quarter-turn valve designed for reliable flow control in large-diameter or high-pressure piping systems. It uses a toothed gear mechanism—usually a worm gear—to actuate the disc, providing mechanical advantage that reduces the effort required to open and close the valve. This makes it ideal for applications where manual lever operation would be too strenuous or impractical.

The valve consists of a circular disc mounted on a rotating shaft; when the gear operator turns the shaft, the disc pivots to either block or allow fluid flow. Gear operators often feature a handwheel, position indicator, and locking device, enabling precise throttling and secure positioning. The enclosed gearbox also protects internal components from dust, moisture, and corrosion, enhancing durability.

These valves are commonly manufactured with bodies and discs in materials such as ductile iron, carbon steel, stainless steel, or aluminum bronze, and can be fitted with soft or metal seats depending on temperature and media requirements. They are widely used in water treatment, power generation, oil and gas, marine, HVAC, and industrial process systems.

Key advantages include smooth operation, excellent shut-off performance, compact design, and long service life. Gear operated butterfly valves are suitable for both on/off isolation and modulating control duties.

Product Details

Turbine operated butterfly valves are crucial components in various industrial systems, offering several distinct advantages over other valve types.

Advantages

Cost - effectiveness: These valves are often more affordable due to their simple design and fewer components. Their manufacturing cost is relatively low, and they also require less maintenance over time, making them an attractive option for large - scale installations where multiple valves are needed.

Compact and Lightweight: Turbine operated butterfly valves have a compact structure and are lightweight. This feature makes them ideal for installations with limited space or where weight restrictions are a concern. Their compactness also simplifies transportation and storage.

Quick Operation: They can be operated rapidly. With a quarter - turn of the turbine, the valve can change from fully open to fully closed or vice versa, enabling efficient and precise flow control. This is especially beneficial in applications that demand frequent adjustments or an immediate response to changing flow conditions.

Low - Pressure Drop: The streamlined design of the butterfly valve disc allows the flowing medium to pass with minimal pressure drop. This characteristic reduces energy consumption, as less energy is required to push the fluid through the valve. It also helps maintain system performance and can minimize the need for additional pumping power.

Good Sealing Performance: Many turbine operated butterfly valves are designed with high - quality sealing materials, such as rubber or PTFE. This ensures a tight shut - off when the valve is closed, preventing leakage and ensuring the integrity of the system.

Specifications

Nominal Diameter: Turbine operated butterfly valves are available in a wide range of nominal diameters, typically from DN50 to DN2000. This wide size range makes them suitable for use in small - scale and large - scale pipelines.

Nominal Pressure: They can withstand different nominal pressures, commonly ranging from 0.6MPa to 1.6MPa. However, valves with higher pressure ratings are also available for specific applications.

Temperature Range: The applicable temperature range varies depending on the materials used in the valve construction. Generally, they can operate in temperatures from - 20°C to + 150°C. Special materials may extend this range for high - temperature or low - temperature applications.

Body Materials: The valve body can be made from various materials, including cast iron, ball - ductile iron, cast steel, and stainless steel. Each material has its own properties, such as corrosion resistance and strength, making them suitable for different media and operating conditions.

Drive Modes: In addition to turbine operation, they can also be equipped with manual, electric, or pneumatic actuators, providing flexibility in operation according to the requirements of the system.

Market Applications

Water and Wastewater Treatment: Turbine operated butterfly valves are widely used in water supply systems to control the flow of clean water. In wastewater treatment plants, they are used to manage the flow of sewage and sludge. Their ability to handle large volumes of fluid with low - pressure drop makes them suitable for these applications.

HVAC Systems: In heating, ventilation, and air - conditioning systems, these valves are used to regulate the flow of air and water. Their quick operation and precise flow control capabilities help maintain comfortable indoor environments.

Chemical and Petrochemical Industries: Due to their corrosion - resistant body materials and good sealing performance, they are used in the chemical and petrochemical industries to control the flow of various chemicals, gases, and oils.

Power Generation: In power plants, whether thermal, hydro, or nuclear, turbine operated butterfly valves are used in water - steam cycles, cooling water systems, and fuel handling systems. They play a crucial role in ensuring the efficient operation of power generation equipment.

Food and Beverage Industry: In this industry, where hygiene and cleanliness are of utmost importance, the smooth - surfaced and easy - to - clean design of these valves makes them suitable for controlling the flow of food - grade fluids.

In conclusion, turbine operated butterfly valves, with their numerous advantages, diverse specifications, and wide - ranging market applications, are an essential part of modern industrial infrastructure.

DIMENSIONS in(mm)

Size	A	B	C2	D	E	F	KxK	Top	Plate
								PCD	HOLE N-Dia
DN50	140	70	105	41	90	30	11x11	70	4-θ9
DN65	152	76	117	44	90	30	11x11	70	4-θ9
DN80	159	91	130	44	90	30	11x11	70	4-θ9
DN100	178	102	162	51	90	30	14x14	70	4-θ9
DN125	191	119	187	54	90	30	14x14	70	4-θ9
DN150	203	133	216	54	90	30	17x17	70	4-θ11
DN200	241	170	271	64	125	30	17x17	102	4-θ11
DN250	273	210	330	64	125	30	22x22	102	4-θ11
DN300	308	243	376	76	125	30	22x22	102	4-θ11

Size	A	B	C2	D	E	F	K	SxS/d	Top Plate Data
									PCD
DN350	413	267	45	150	80	525	470	22x22	125
DN400	451	309	45	175	90	585	525	27x27	140
DN450	467	318	45	175	109	650	585	27x27	140
DN500	525	350	45	175	127	720	650	36x36	140
DN600	607	410	45	210	154	850	770	36x36	165

PN10

Size	A	B	C	L	фD	фK	Nxфd	4xM	фE	фF	a°	G	H	O	P	фR	Weight(Kg)
DN700	784	581	163	169	895	840	24xф31	/	741	695	15	355	146	146	228	400	361
DN800	832	655	188	195	1015	950	24xф34	/	847	794.7	15	355	146	146	228	400	444
DN900	974	745	203	211	1115	1050	24xф34	4xM30	943	864.7	12.857	377	170	170	243	450	660
DN1000	1054	803	216	224	1230	1160	24xф37	4xM33	1049	965.7	12.857	377	170	170	243	450	830

PN16

Size	A	B	C	L	фD	фK	Nxфd	4xM	фE	фF	a°	G	H	O	P	фR	Weight(Kg)
DN700	784	581	163	169	910	840	20xф37	4xM33	741	695	15	355	146	146	228	400	396
DN800	926	655	188	195	1025	950	20xф40	4xM36	847	794.7	15	377	170	170	243	450	573
DN900	974	745	203	211	1125	1050	24xф40	4xM36	943	864.7	12.857	377	170	170	243	450	690
DN1000	1110	803	216	224	1255	1170	24xф43	4xM39	1049	965.7	12.857	476	180	250	302	450	1025