Basic Double-Stages Drive Gearbox

Worm Gear-Worm Drive Set: Utilizes a worm gear-worm drive set for efficient performance.
Compact & Lightweight: Features a small size and light weight for easy handling and installation.
High Output Torque: Delivers large output torque for robust operation.
Rational Structure: Designed with a rational structure for enhanced reliability.
Easy to Operate: User-friendly operation for convenience.
Reliable Self-Holding Capacity: Provides dependable self-holding capability to ensure secure operation.
Ideal for 90° Rotation Valves: Suitable for controlling butterfly valves, ball valves, plug valves, and other valves with 90° rotation.

Description

Model	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	H (mm)	Φ (mm)	K (mm)	Q (mm)	M (mm)	K1 (mm)
3D-15/17	50	111	96	300	60	86	200	47	130	162	38
3D-15/75	50	121	106	330	70.5	88	200	47	150	162	38
3D-15/120	50	121	106	348	78	88	200	47	170	162	40
3D-30/250	65	160	135	421	90	105	300	63	200	208	50
3D-30/300	65	160	160	423	90	123	380	63	250	215	57
3D-30/400	65	185	160	500	125	129	380	63	278	215	63
3D-60/800	69	218	160	543	160	132	380	78	330	213	66

Model	Available Opening of Butterfly Valve (mm/inch)	d (mm)	b (mm)	t (mm)	D3 (mm)	h (mm)	D2 (mm)	D1 (mm)	n-d1
3D-15/17	Metric: 50-80 / British: 2″-3″	12.7	3	15.5	–	–	57.15	92	4-M6
	Metric: 100 / British: 4″	15.9	5	20.5	–	–	69.85	92	4-M8
	Metric: 125-150 / British: 5″-6″	19.05	5	23.65	–	–	69.85	92	4-M8
3D-15/75	Metric: 200 / British: 8″	22.2	5	26.8	–	–	88.9	125	4-M12
	Metric: 250 / British: 10″	28.6	8	35.2	–	–	–	125	4-M12
3D-15/120	Metric: 300 / British: 12″	31.8	8	38.4	–	–	108	140	4-M12
	Metric: 350 / British: 14″	31.8	8	38.4	–	–	–	140	4-M12
3D-30/250	Metric: 400 / British: 16″	33.3	10	39.9	–	–	158.75	200	4-M18
3D-30/300	Metric: 450 / British: 18″	38.1	10	44.7	–	–	158.75	200	4-M18
	Metric: 500 / British: 20″	50.8	16	59.4	–	–	215.9	278	4-M18
3D-30/400	Metric: 600 / British: 24″	55	16	63.6	–	–	254	300	8-M16
3D-60/800	Metric: 700 / British: 28″	55	16	63.6	–	–	–	300	8-M16
	Metric: 800 / British: 32″	55	16	63.6	–	–	–	300	8-M16