Manual Override

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Main use of the product

This manual mechanism is used in combination with pneumatic actuator assembly for manual and pneumatic actuation of butterfly valves, ball valves, etc. for 90° opening.

Features

Small size, light weight, reasonable design, novel style
Product serialization, output torque and pneumatic device, matching various valves.
The inner hole of the turbine connection has two keyways separated by 90° so that the user can select the relative position of the device to the valve as needed.
Lift the limit pull ring, rotate the eccentric device 90 ° limit pin automatic limit, achieve pneumatic, and vice versa.
When the product leaves the factory, it is equipped with special grease. After assembly with the valve, it is sealed, dustproof and waterproof. The protection grades are IP65, IP67 and IP68.

SD series pneumatic valve manual mechanism technical parameters

Manual mechanism model	AT double action (DA)	AT single action (SR)	Speed ratio	Output torque
SD-1	DA52-92	SR52-83	26:1	180
SD-2	DA105-125	SR92-105	28:1	320
SD-3	DA125-145	SR115-125	38:1	680
SD-4	DA160-190	SR145-160	54:1	1200
SD-5	DA210-240	SR190-210	80:1	2100
SD-6	DA240-270	SR210-240	78:1	3000
SD-7	DA270-300	SR240-270	98:1	3800

Main component materials

No.	Name	Material	No.	Name	Material
1	drive spindle	alloy steel	9	turbine	ductile iron
2	sealing ring	nitrile rubber	10	plane bearing	alloy steel
3	circlip	stainless steel (304)	11	handle	stainless steel (304)
4	upper cover	aluminum alloy	12	eccentric sleeve	alloy steel
5	Fasteners	stainless steel (304)	13	Sealing ring	Nitrile rubber
6	Locating Pin	Alloy Steel	14	Worm	Alloy Steel
7	sealing ring	nitrile rubber	15	transmission rod	alloy steel
8	sealing ring	nitrile rubber	16	case	aluminum alloy