Worm Gear Butterfly Valve
14 products found
A worm gear butterfly valve is a quarter-turn rotary valve engineered with a multi-turn mechanical gearbox to provide high-torque throttling and isolation for large-diameter pipelines (typically DN100 and above). The high gear-reduction ratio of the internal worm and worm wheel acts as a force multiplier, translating minimal manual input at the vertical handwheel into the immense rotational force needed to position the internal disc against high system differential pressures. Based on the friction angle principle, this gear design is inherently self-locking, meaning fluid dynamic forces or system vibrations cannot back-drive the disc, allowing it to stably maintain intermediate throttling positions without external brakes. Procurement networks and municipal utility contractors can reduce operational fatigue and secure reliable flow isolation by importing certified worm gear butterfly valves directly from leading manufacturers in China via our advanced B2B digital marketplace.
Weldon
Cast Iron GGG40 Centric Butterfly Valve, Soft Seal, DN400, PN16, RF
Model Number: CBFV-01
Weldon
ASTM A216 WCB Double Offset Butterfly Valve 24 Inch 300 LB Lug Type
Model Number: DOBV-01
Weldon
Flanged End Double Offset Butterfly Valve A216 WCB 12 Inch 300 LB
Model Number: DOBV-02
Weldon
API 609 Triple Offset Butterfly Valve, A216 WCB, DN1100, PN10, RF
Model Number: TOBV-01
Weldon
Metal Seat Triple Offset Butterfly Valve, A216 WCB, 16 Inch, 150 LB
Model Number: TOBV-02
Weldon
API 609 Butterfly Valve, ASTM A217 WC6, 48 Inch, 150 LB, Lug
Model Number: WV-240222-CBFV-06
Weldon
ASTM A216 WCB Butterfly Valve, 2-32 Inch, 150 LB, Worm Gear
Model Number: WV-240229-CBTV-04
Wenzhou Unique Valve Co., Ltd.
Soft Seated Butterfly Valve, ASTM A216 WCB, Worm Gear
Zhejiang Xinhai Valve Manufacturing Co., Ltd.
Worm Gear Hard Seal Butterfly Valve
Model Number: D373H
Zhejiang Xinhai Valve Manufacturing Co., Ltd.
Worm Gear Wafer Soft Seal Butterfly Valve
Model Number: D371X
Zhejiang Xinhai Valve Manufacturing Co., Ltd.
Worm Gear Hard Seal Butterfly Valve
Model Number: D373H
XIAMEN LANDEE INDUSTRIES CO., LTD.
UPVC Worm Gear Butterfly Valve, 2-1/2 - 8 Inch
XIAMEN LANDEE INDUSTRIES CO., LTD.
UPVC Worm Gear Butterfly Valve, 2-1/2 - 8 IN, Flange End
Model Number: LV 22 PV 12
Zhejiang Kosen Valve Co., Ltd.
Worm Gear Butterfly Valve, API 609, WCB, 44 Inch, 900 LB, BW
Model Number: KV-20250526-TEBFV-01
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