Efficient Multi-Spring Pneumatic Diaphragm Actuators with Durable Cover Materials

• 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 is ingeniously designed with a multi-spring structure, available in two distinctive forms: positive action and negative action. This remarkable design seamlessly achieves the desired fault position of the valve by utilizing the reliable spring reset mechanism. Specifically paired with a straight-stroke valve, this actuator excels in the precise control and adjustment of process parameters. With an impressive maximum stroke of 76mm, this high-performance pneumatic actuator stands out with its lightweight profile, powerful thrust, and elegantly simple structure, making it an ideal choice for diverse applications.
The exceptional 1-X250 series straight-stroke pneumatic diaphragm actuator features a sophisticated single-spring structure. While it shares similarities with the 1-X280 series, it is uniquely tailored for long-stroke control scenarios, boasting a remarkable maximum stroke of 250mm. In comparison to the pneumatic piston actuator, it offers superior adjustment accuracy combined with a lightweight design. Moreover, it is adept for cutting applications, equipped with a pneumatic valve, speed increaser, and fast discharge valve, enabling rapid cutting with a minimum fast cutting time of just 1 second. This actuator embodies precision and efficiency, perfect for demanding environments.}

 

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>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.</sup>

<sup>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</sup>

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, an integral component of the actuator, plays a pivotal role in its performance.diaphragm is craftedfrom high-quality neoprene rubber, renowned for its exceptional resistance to aging, chemical exposures, and ability to retain its shape even under prolonged stress.

3. The pushrod isskillfully craftedfrom AISI420 stainless steel, further enhanced by a nickel-plated surface, delivering superior smoothness and outstanding corrosion resistance.

4. The guidebushing bushing is meticulouslycrafted from aluminum bronze, guaranteeing excellent guidance with minimal deformation at lower temperatures, thereby preserving optimal air chamber sealing.

5. For superior sealing,an A-typesealingring is strategically placed below the junction of the push rod and bracket to effectively block oil, sand, or particulate infiltration.

Application Flexibility

1. All components designed for direct-acting and reverse-acting operations are universally standardized to ensureeffortless interchangeability.

2. The spring configuration allows for adjustable positioning based on the operational stroke. The integrally cast aluminum tray provides dual installation positions: high and low, ensuring ease of installation. Additionally, 3, 4, or 6 springs can be configured to accommodate diverse spring ranges.

3. Each actuator specification is offered with multiple spring selections, catering to a broad spectrum of valve dimensions.

4. Two handwheel mechanism options are available: top-mounted and side-mounted. The side-mounted handwheel, notably, can be entirely detached from the actuator, simplifying the installation process.

5. The connection framework between the actuator and valve utilizes a compression plate and sleeve design, promoting straightforward installation and convenient on-site replacement of packing.

Actuator Options

1. Adjustable Upper Stroke Limiter: Essential for controlling the upward stroke of the actuator.

2. Adjustable Lower Stroke Limiter: Essential for controlling the downward stroke of the actuator.

3. Top-Mounted Handwheel Mechanism

4. Side-Mounted Handwheel Mechanism

5. Low and High-Temperature Actuators: Engineered for unique environmental conditions.

6. Low-Temperature Actuators: Perfectly crafted for environments with temperatures spanning -60°C to 70°C.

7. High-Temperature Actuators: Suited for environments with temperatures ranging from -20°C to 100°C.

8. Actuator Locking Device: Ensures the actuator remains securely locked during maintenance, aligning with the fail-safe position of the actuator.

9. Remote Venting: For optimal safety and to ensure the highest standards of operational security when utilizing natural gas or other potentially hazardous gases as the actuator's air source, it is imperative that the actuator housing be equipped with a proficient venting device. This essential feature diligently prevents the dangerous accumulation of gases, thus safeguarding both the equipment and the environment.

10. Additional Control Circuit Accessories: Enhance the functionality and precision of your operations with our comprehensive range of additional control circuit accessories. These components are meticulously designed to seamlessly integrate with your system, ensuring superior performance, reliability, and adaptability to meet your specific application needs.: Positionerositioner, pressure regulator, solenoid valve, limit switch, locking valve, booster: Elevate your operational efficiency with our premium suite of components. Each accessory, including the positioner, pressure regulator, solenoid valve, limit switch, locking valve, and booster, is crafted to deliver exceptional control and stability, ensuring your system operates at peak performance with unmatched precision and reliability.

 

Production application

Company Profile

SNT Machinery (Qingdao) Co., Ltd. emerges as a distinguished powerhouse in the realm of control valve production, seamlessly integrating manufacturing, design, sales, and service. With a vision for a high starting point and rapid development, SNT is strategically positioned in Qingdao, Shandong province, sprawling over an expansive 42,000m2. This modern facility, equipped with state-of-the-art workshops and cutting-edge production tools, epitomizes a high-tech enterprise boasting independent intellectual property rights, and benefits from the finest imported management and production expertise. Our team of over 150 dedicated professionals includes a remarkable 15% in R&D specialization and 30% holding graduate or higher degrees. Driven by an exceptional production management team and innovative R&D, we manufacture an impressive range of high-quality valves indispensable in the petrochemical, oil, and coal chemical sectors. In 2017, our sales impressively approached the 100 billion mark.

SNT proudly holds the TS Special Equipment Manufacturing Certificate and ISO 9001 accreditation, and has attained the net qualification certificate from industry giants SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our commitment to innovation is evidenced by numerous national patents. We meticulously design and manufacture an extensive series of valves adhering to global standards like ANSI, API, DIN, BS, and JIS. Combining global valve excellence with our proprietary R&D, we now produce a diverse range of valves such as GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly Valves.
Our comprehensive valve collection further includes V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves. We offer versatile driving forms including manual, power-driven, pneumatic, and hydraulic options. Our main components are crafted from premium materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc. We offer specifications ranging from 1/2" to 120", accommodating working pressures from ANSI 150# to 2500#, and capable of withstanding temperatures from -196ºC to 1100ºC.

Harnessing advanced production technology management and a robust quality assurance system, SNT Valves have gained widespread acclaim in industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our prestigious clientele includes SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, along with SINOPEC Changling and Jinan branches, thereby reinforcing our reputation as a trusted industry leader.

Customer satisfaction is at the core of our philosophy, and we are unwaveringly committed to crafting premium quality products and a distinguished brand. Our exemplary quality assurance and after-sales services ensure that SNT Valves foster prosperous partnerships, driving mutual success and growth with all our valued clients.