At Series Double Acting /Single Acting Pneumatic Actuator

Pneumatic Actuators – Quarter Turn, Double Acting or Spring Return

Pneumatic Rotary Actuator-double acting and spring return pneumatic actuators

with 2 optional: Double Acting and Single Acting(Spring Return).

1 million lifetimes and Max. torque is 4600Nm. CNC machine precision machining to reduce the size error of parts. ISO5211 mounting for ball valve and butterfly valve.

Actuator Type: Double Acting / Single Acting

Air Supply Pressure: 2 bar to 8 bar

Material: Aluminum alloy

Angle Of Rotation : 0° to 90°

Ambient Temperature: -40 to 160℃

Protection Class: IP65

Cup Color:sky blue orange grey

Introduction

WOLUN Series Double Acting Pneumatic Actuator rack and pinion designed to give long service life with light weight and high performance. Features include end of stroke adjustment, visual Indicator, namur interface and ISO mounting interface. Options include IP65 limit switch box with visual Indicator, Namur (direct mount) solenoid valves and a range of inserts to step the drive down.

Working Principle of Single Acting (Spring Return) Pneumatic Actuator

CCW

Air to port A forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Air to port B forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Benefits Of Spring Return Pneumatic Actuator

Supply air to open and air interrupted to close.Single-acting(Spring return) 90 degrees pneumatic rotary actuator.Spring-return pneumatic actuator provides you with automated fluid control solutions. Single-acting pneumatic actuators contain several springs. Its advantages include safety, explosion-proof, and auto return. ISO5211 mounting standard for ball valve and butterfly valve. Widely used for fluid control for shipyard, water treatment, food and beverage and so on. Use with positioner for easy industrial automation.

Working Principle of Double Acting Pneumatic Actuator

CCW

Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A.

Air to Port A forces the pistons outwards, causing the pinion to turn clockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port A.

Benefits Of Double Acting Pneumatic Valve Actuator

Supply air to open, supply air to closed. Responsive and high torque up to 4678Nm. Double-acting pneumatic rack and pinion actuator provides you with an automated fluid control solution. The advantages of double-acting pneumatic actuators include fast response, safety, and explosion protection. Suitable for opening or closing ball and butterfly valves. Widely used in water skid-mounted systems, food process skid-mounted systems, and so on. It can easily realize industrial automation when used with a positioner.

Interface Specification

1.Drive and Flange to lS05211 configuration for easy directmount onto a valve or connectionwith standardized mounting hardw are.

2.The NAMUR Drive Pinion and NAMUR top mounting connection for direct installation of accessories such as Limit Switch and Positioner.

3.Air supply connection is designed in accordance with NAMUR Standard to install solenoid valve.

Components,Materials & Corrosion-Proof of pneumatic actuator

Part No	Quality of Machine	Part Name	Standard Material	Actual Material
1	1	Cylinder	Extruded aluminum alloy	Stainless steel
2	1	Output shaft	Carbon steel	Stainless steel
3	1	O-ring(at the bottom of the output shaft)	NBR	Fluorine/ silicon rubber
4	1	Bearing(at the bottom of the output shaft)	Nylon46	–
5	1	Adjusting Cam	Stainless steel	–
6	1	Thrust Bearing(output shaft)	Nylon46	–
7	1	Bearing(at the top of the output shaft)	Nylon46	–
8	1	O-ring(at the top of the output shaft)	NBR	Fluorine/ silicon rubber
9	1	Bearing(at the top of the output shaft)	Nylon46	–
10	1	Gasket((output shaft)	Stainless steel	–
11	1	Elastic damping ring	Stainless steel	–
12	1	Position indicator	PPPP+30%GF	–
13	1	Screw	PPPP+30%GF	–
14	4	Position indicator piece	PPPP+30%GF	–
15	2	Positon	Casting aluminum alloy	–
16	2	Guide bearing(at the back of piston)	Nylon46	Fluorine/ silicon rubber
17	2	O-ring(piston)	NBR	–
18	2	Guide ring(piston)	Fluorine-carbon composite material	–
19	5-12	Spring assembly	Alloy spring steel	–
20	2	O-ring(end cap)	NBR	Fluorine/ silicon rubber
21	1	Left end cap	Casting aluminum alloy	Stainless steel
22	1	Right end cap	Casting aluminum alloy	Stainless steel
23	8	End cap bolt	Stainless steel	–
24	2	O-ring(adjusting bolt)	NBR	Fluorine/ silicon rubber
25	2	Gasket	Stainless steel	–
26	2	Nut	NBR	–
27	2	Adjusting bolt	Stainless steel

Producto Specifications

Pressure Range: Max. Working pressure 10bar

Air pressure: 2.5bar~8bar

Adjustment Range: 90° ± 5°

Ambient temperature: -20 ~ +90° C

Type: Double acting, Single acting (spring return)

Optional accessories: Solenoid valve, limite switch, electric position, air regulator

Lubrication: All the moving parts are coated with lubricants, extending their service life

Life Time: One million time