About Pneumatic Diaphragm
The 1-X280 series straight-stroke pneumatic diaphragm actuator adopts amulti-spring structure, which is divided into two forms: positive action and nega-tive action. It can easily realize the required fault position of the valve by relying on the spring reset. It is combined with the straight-stroke valve, which is mainly used for the control and adjustment of process parameters. The maximum stroke can reach 76mm. It is a high-performance pneumatic actuator with light weight, large thrust, simple structure and other characteristics.
The 1-X250 series straight-stroke pneumatic diaphragm actuator adopts a single-spring structure. Compared with the 1-X280 series, it is mainly used for long-stroke control, with a maximum stroke of 250mm. Compared with the pneumatic piston actuator, it has the advantages of high adjustment accuracy and light weight, and can also be used for cutting occasions. It is equipped with a pneumatic valve, a speed increaser, a fast discharge valve, etc., which can realize fast cutting, and the minimum fast cutting time can reach 1S.
| Type |
PNEUMATIC DIAPHRAGM LINEAR ACTUATORS |
| Model |
1-X280 |
1-X250 |
| Size |
D12 |
D25 |
D33 |
D39 |
D46 |
D63 |
D63 |
| Membrane Diameter(mm) |
218 |
262 |
333 |
395 |
465 |
640 |
640 |
| Active Area(mm2) |
33567 |
48497 |
78343 |
110231 |
152763 |
289382 |
289382 |
| Stroke(mm) |
17 |
17 |
25 |
17 |
25 |
34 |
45 |
17 |
25 |
34 |
45 |
25 |
34 |
45 |
60 |
34 |
45 |
60 |
76 |
100 |
120 |
150 |
200 |
| Handwheel |
T |
T/S |
T/S |
T/S |
T/S |
S |
S |
| Supply |
40psi,50psi,60psi (0.28Mpa,0.35Mpa,0.4Mpa) |
| Air Connect |
1/4" NPT |
1/4" NPT |
1/4" NPT |
1/2" NPT |
1/2" NPT |
1" NPT |
1" NPT |
| Orientation Diameter(mm) |
Φ55 |
Φ60 |
Φ60 |
Φ76 |
Φ76 |
Φ95 |
Φ128 |
| Max. Output thrust(N) |
2185 |
2880 |
7696 |
12040 |
17353 |
26672 |
28242 |
| Lag |
≤1%FS(With positioner )-GB/T4213-201 |
| Liner |
≤±2%FS(With positioner)-GB/T4213-2013 |
| Air chamber sealing |
Pressure reduction value ≤5.0Kpa/5min-GB/T4213-2013 |
| Service life |
≥100000-GB/T4213-2013 |
| Ambient Temperature |
Standard -10~+70 High Temperature -40~+100ºC |
| Coating Color |
Bule |
| Attachments |
Electropneumatic valve positioner ,Pneumatic valve positioner, filter reducing valve, plasticizing relay, solenoid valve, pneu-
matic valve, lock valve, speed controller, limit switch |
| Position transmitter, manual mechanism, maximum adjustable mechanical limit, minimum adjustable mechanical limit |
Option |
Special interface, specified coating, diameter of connection locating hole, extension length of push rod, thread at connection |
Effective Thrust of Valve Stem
(N/psi) |
| Model |
1-X280 |
1-X250 |
| Action Mode |
D12 |
D25 |
D33 |
D39 |
D46 |
D63 |
D63 |
| DA(Direct Action) |
220 |
222 |
409 |
580 |
828 |
1574 |
1569 |
| RA(Reverse Action) |
180 |
192 |
370 |
519 |
748 |
1420 |
1295 |
Long service life
The membrane cover is made of stamped steel, the surface is alvanized+painted for corrosion prevention, and the paint is not easy to fall off;
The actuator bracket is made of cast steel or forged steel,and the structure is firm and reliable;
The diaphragm is made of neoprene, which has the characteristics of good resistance to aging damage, chemical attack and non deformation under continuous stress;
The material of the push rod is AISI420, the surface is extruded and nickelplated, with high finish and corrosionresistance;
The guide bushing is made of aluminum bronze, with good guance and small deformation at low temperature to ensure good sealing of the air chamber;
The lower part of the connection between the push rod and thbrackeis sealed with an Atype sealing ring to prevent the penetrationof oil, sand or dirt.
Application flexibility
All positive and reaction parts are interchangeable.
The spring installation position can be adjusted according to the stroke. The integrally cast aluminum tray has two installation positions, high and low, which are convenient for installation. You can also choose to install 3, 4 and 6 springs to
obtain different spring ranges;
Each specification of actuator has a variety of travel springs, which can be installed with a wide range of valve diameters;
There are two types of hand wheel mechanism: top-mounted handwheel and side-mounted handwheel. Inparticular, the side-mounted handwheel can be completely
separated from the actuator, which is very convenient
to install;The connection between the actuator and the valve adopts t
he pressing plate and sleeve structure, which is easy to install and replace the packing on site.
Options
Adjustable upper travel limit: used to limit the travel of the actuator in the upward direction.
Adjustable lower travel limit: used to limit the travel of the actuator in the downward direction.
Top-mounted handwheel mechanism.
Side-mounted handwheel mechanism.
Low-temperature and high-temperature actuators: used for specific ambient temperature.
Low-temperature actuators Operating temperature:
- 60 ~70 ºC.
High-temperature actuators Operating temperature:- 20 ~100 ºC.
Actuator locking device: ensure that the actuator remains in the locking position during maintenance (the same as the actuator fault position).
Position transmitter, manual mechanism, maximum adjustable mechanical limit, minimum adjustable mechanical limit.
Other accessories are used for control circuit: positioner, pressure reducing valve, solenoid valve, limit switch, lock valve, booster, amplifier, pneumatic valve, etc
Actuator spring ranges(psi)
1-X280 SERIES SIDE HANDWHEEL
1-X280 series overall dimensions & mass
Service Life
1. The diaphragm cover is made of stamped steel with a galvanized and painted surface for corrosion resistance. The paint is designed to be durable and not easily peel off. The actuator bracket is made from cast or forged steel, ensuring a robust and reliable structure.
2. The diaphragm is constructed from neoprene rubber, offering excellent resistance to aging, chemical corrosion, and maintaining its shape under continuous stress.
3. The push rod is made of AISI420 with a nickel-plated surface, providing high smoothness and corrosion resistance.
4. The guide bushing is made from aluminum bronze, ensuring good guidance and minimal deformation at low temperatures, which maintains good air chamber sealing.
5. For the sealing, an A-type sealing ring is used below the connection point of the push rod and bracket to prevent oil, sand, or dirt from penetrating.
Application Flexibility
1. All direct-acting and reverse-acting parts are universal to ensure interchangeability.
2. The spring installation position can be adjusted according to the stroke. The integrally cast aluminum tray offers two installation positions: high and low, making installation convenient. Meanwhile, 3, 4, or 6 springs can be configured to achieve different spring ranges.
3. Each specification of the actuator comes with various spring options, accommodating a wide range of valve sizes.
4. There are two types of handwheel mechanisms: top-mounted and side-mounted. The side-mounted handwheel, in particular, can be completely detached from the actuator, making installation very convenient.
5. The connection between the actuator and the valve uses a compression plate and sleeve structure, facilitating easy installation and convenient on-site replacement of packing.
Actuator Options
1. Adjustable Upper Stroke Limiter: Used to limit the upward stroke of the actuator.
2. Adjustable Lower Stroke Limiter: Used to limit the downward stroke of the actuator.
3. Top-Mounted Handwheel Mechanism
4. Side-Mounted Handwheel Mechanism
5. Low and High-Temperature Actuators: Designed for specific environmental conditions.
6. Low-Temperature Actuators: Suitable for environments with temperatures ranging from -60°C to 70°C.
7. High-Temperature Actuators: Suitable for environments with temperatures ranging from -20°C to 100°C.
8. Actuator Locking Device: Ensures the actuator remains in a locked position during maintenance, which corresponds to the fail-safe position of the actuator.
9. Remote Venting: When natural gas or other hazardous gases are used as the actuator's air source, the actuator housing should be equipped with a venting device to prevent gas accumulation.
10. Additional Control Circuit Accessories: Positioner, pressure regulator, solenoid valve, limit switch, locking valve, booster
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