Multi-Spring Pneumatic Diaphragm Actuators with Single-Spring Structure Design

• Customization: Available
• Brand: Snt
• Power: Pneumatic
• Model NO.: 1-X280
• Adjusted Form: Regulated Type
• Working Type: Straight Trip
• Pressure: Medium Pressure
• Work Temperature: Normal Temperature
• Acting Type: Spring Return
• Material: Stainless Steel
• Customized: Customized
• Structure: Thin-Film Type
• Structures: Single-Spring Structure
• Diaphragm Covermaterial: Stamped Steel
• Override Surface Material: Galvanized and Painted
• Actuator Bracket Material: From Cast or Forged Steel
• Diaphragm Material: Neoprene Rubber
• Push Rod: AISI420 with a Nickel-Plated Surface
• Guide Bushing: Aluminum Bronze
• Actions: Da(Diresct Action)/Ra(Reverse Action)
• Size: D12 D25 D33 D39 D46 D63
• Stroke: 17 25 34 45 60 76 100 120 150 200
• Supply: 40psi(0.28MPa)/60psi(0.4MPa)
• Handwheel: Top or Side
• Action: D12 D25 D33 D39 D46 D63
• Direct: 200 222 409 580 828 1574
• Reverse: 180 192 370 519 748 1420
• Transport Package: Foam and Carton Box
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000 Per/Year
• Package Size: 1.07cm * 1.07cm * 1.04cm
• Package Gross Weight: 20.000kg
• Lead Time: 15 days (1 - 50 Pieces) ; To be negotiated ( > 50 Pieces)

Product Description

 

About Pneumatic Diaphragm

 

^{The 1-X280 series straight-stroke pneumatic diaphragm actuator features an innovative multi-spring structure, offering both positive and negative action configurations. This advanced design allows seamless customization of the valve's fault position through spring reset, ensuring optimal control and adjustment of process parameters. When paired with a straight-stroke valve, it excels in delivering high-performance operation. Boasting a maximum stroke of 76mm, this actuator is renowned for its impressive attributes, including lightweight build, substantial thrust, and straightforward assembly, making it an ideal choice for various industrial applications.
The 1-X250 series straight-stroke pneumatic diaphragm actuator is ingeniously crafted with a single-spring structure, distinguishing it from its 1-X280 counterpart. This model is specially tailored for long-stroke control, offering a remarkable maximum stroke of 250mm. Compared to conventional pneumatic piston actuators, the 1-X250 series stands out with its unparalleled adjustment precision and lightweight construction. Perfectly suited for cutting tasks, it is equipped with essential components like a pneumatic valve, speed increaser, and fast discharge valve. This combination ensures rapid cutting capability, achieving a minimum fast cutting time as swift as 1 second, setting a new standard in efficiency and performance.}

 

Product Description

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

 

Product Parameters

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

 

 

Actuator Features

 

<sup>Enduring Longevity and Reliability
Crafted with precision, the membrane cover boasts a construction from stamped steel with a dual-layer protection of galvanization and high-quality paint, ensuring exceptional resistance to corrosion and a finish that resists peeling.
The actuator's bracket is meticulously engineered from either cast steel or forged steel, providing a foundation of strength and unwavering reliability.
Innovatively designed, the diaphragm utilizes durable neoprene, offering superior resistance to aging, chemical exposure, and retaining its form even under continuous stress.
With a surface finish that is both extruded and nickel-plated, the AISI420 push rod material demonstrates high durability and outstanding corrosion resistance.
Featuring aluminum bronze, the guide bushing ensures smooth guidance and minimal deformation at low temperatures, maintaining optimal air chamber sealing.
The lower junction of the push rod and bracket is fortified with an A-type sealing ring, expertly preventing oil, sand, and dirt intrusion.

Versatile Application Flexibility
All components, whether for positive or reactive applications, are seamlessly interchangeable.
The actuator's spring position is adjustable, with an integrally cast aluminum tray designed for dual installation heights, offering convenience. Additionally, choices of 3, 4, or 6 springs provide tailor-made spring ranges.
accommodating diverse requirements for varied spring effectiveness.
Every actuator specification supports a versatile range of travel springs, adaptable to different valve diameters.
Two handwheel mechanisms available: the top-mounted variant and the uniquely convenient side-mounted type, which can be completely
detached from the actuator, enhancing installation convenience.
The actuator-valve connection leverages a pressing plate and sleeve design,
facilitating effortless onsite installation and packing replacement.</sup>

<sup>Diverse Options to Suit Every Need

Adjustable upper travel limit: precisely controls actuator upward motion.
Adjustable lower travel limit: expertly manages actuator downward motion.
Top-mounted handwheel mechanism for accessible control.
Side-mounted handwheel mechanism for enhanced versatility.
Temperature-adaptive actuators: suited for extreme ambient conditions.
Low-temperature actuators: Operating optimally at temperatures ranging from
- 60 ~70 ºC, ensuring performance in chill conditions.
High-temperature actuators: Functioning at - 20 ~100 ºC, ideal for warmer environments.
Secure actuator locking device: Maintains secure locking during maintenance, aligning with actuator's fault position.
Comprehensive accessory options: Including position transmitter, manual operations, and finely adjustable mechanical limits.
Control circuit enhancements: Incorporating positioner, pressure reducing valve, solenoid valve, limit switch, lock valve, booster, amplifier, and pneumatic valve for seamless operations.</sup>

Actuator Spring Ranges (psi): Tailored for diverse performance needs.

1-X280 SERIES: Featuring Side Handwheel for versatile operation.


1-X280 Series: Detailed dimensions and mass specifications available for your convenience.




Remarkable Service Life Assurance

1. The diaphragmis expertly covered with precision-engineered stamped steel, featuring a dual-layer protection that is galvanized and painted to resist corrosion.The finish is crafted to be long-lasting and resistant to peeling, while the actuator bracket, made from cast or forged steel, ensures robustness and reliability.

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 - Enhance the precision and responsiveness of your system with our state-of-the-art control circuit accessories. These components are meticulously crafted to ensure seamless integration and optimal performance, empowering your operations with unparalleled efficiency and reliability.

 

Production application

Company Profile

SNT Machinery(Qingdao) Co., Ltd. stands as a comprehensive powerhouse in the control valve industry, merging manufacturing excellence, innovative design, strategic sales acumen, and dedicated services under one roof. Our journey started with a robust foundation, propelling us towards rapid growth. Nestled in the vibrant city of Qingdao, Shandong province, our facility spans an impressive 42,000 square meters, boasting state-of-the-art workshops and cutting-edge production equipment. As a high-tech enterprise, we pride ourselves on possessing independent intellectual property rights coupled with the integration of advanced global management and production practices. Our team comprises over 150 dedicated professionals, with a significant 15% dedicated to R&D and 30% holding graduate or higher degrees. Leveraging a blend of superior production management and trailblazing research and development, we craft high-quality valves tailored for the petrochemical, oil, and coal chemical sectors. Our remarkable achievements culminated in a sales value nearing 100 billion in 2017.

SNT proudly holds the TS special equipment manufacturing certificate and the distinguished ISO 9001 certification. We have also secured the net qualification certificate from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our commitment to innovation is underscored by numerous national patents in cutting-edge technologies. We offer a comprehensive range of valve designs and manufacturing services adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of world-renowned valve technologies and conducting independent research and development, we have mastered the production of a diverse array of valves, including GLOBE Valves, High-Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves.
Our extensive valve portfolio further includes V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. Available driving forms encompass manual operation, power-driven, pneumatic, and hydraulic drive systems. Our main components feature materials such as A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, among others, with specifications ranging from 1/2" to 120". Our products support working pressures from ANSI 150# to 2500# and operate efficiently in temperatures spanning from -196ºC to 1100ºC.

Empowered by cutting-edge production technology management and a robust quality assurance system, SNT Valves are highly esteemed across multiple industries, including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele features prestigious names such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, and numerous others.

At the heart of our mission is the unwavering commitment to prioritize our customers' profits, dedicating ourselves to building an impeccable reputation for quality and brand excellence. Our comprehensive quality assurance and unparalleled after-sales systems ensure that SNT valves forge lasting partnerships with our clients, driving mutual success and shared prosperity.