Multi-Spring Pneumatic Diaphragm Actuators with Reliable Single-Spring Mechanism

• 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

 

^{Introducing the exceptional 1-X280 series straight-stroke pneumatic diaphragm actuator, a marvel of engineering brilliance from SNT Machinery (Qingdao) Co., Ltd. This cutting-edge actuator features an innovative multi-spring structure with remarkable versatility, offering both positive and negative action modes. Its design allows seamless fault position adjustments through the spring reset mechanism, ensuring optimal valve functionality. Crafted to complement straight-stroke valves, this actuator excels in controlling and fine-tuning process parameters with precision. Boasting an impressive maximum stroke of 76mm, this high-performance pneumatic actuator is synonymous with lightweight elegance, formidable thrust, and a straightforward yet sophisticated build.
Presenting the 1-X250 series straight-stroke pneumatic diaphragm actuator by SNT Machinery (Qingdao) Co., Ltd., a masterpiece in the realm of long-stroke control. This actuator stands apart with its singular single-spring configuration, making it highly adept for applications requiring extended strokes, reaching up to a remarkable 250mm. When compared to traditional pneumatic piston actuators, the 1-X250 series offers superior adjustment precision and a more lightweight design. It is specifically engineered for precision cutting applications, fitted with a pneumatic valve, speed increaser, and a fast discharge valve, enabling rapid cutting with an astonishing minimum time of just 1 second.}

 

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>Remarkable Longevity and Durability
Our membrane cover is expertly crafted from high-quality stamped steel and features a galvanized and painted finish, offering superior protection against corrosion. This durable finish ensures the paint remains intact even in harsh conditions;
The actuator bracket, constructed from either cast steel or forged steel, provides a solid and dependable framework, ensuring long-lasting reliability;
The diaphragm, made from premium neoprene, exhibits excellent resistance to aging, chemical exposure, and remains resilient without deforming under continuous stress;
Crafted from AISI420, the push rod boasts an extruded and nickel-plated surface, delivering high corrosion resistance and a smooth finish;
Our guide bushing, composed of aluminum bronze, ensures precision guidance with minimal deformation in low temperatures, maintaining optimal air chamber sealing;
The joint between the push rod and the bracket is expertly sealed with an A-type sealing ring, effectively preventing the intrusion of oil, sand, or dirt.

Unmatched Application Versatility
Designed for adaptability, all positive and reaction components are fully interchangeable to suit your needs.
Our spring installation is adjustable and can be tailored to the stroke. The integrally cast aluminum tray offers dual installation positions-both high and low-for flexibility. Additionally, opt for configurations with 3, 4, or 6 springs
to achieve various spring ranges, catering to diverse operational requirements;
Every actuator specification is equipped with a range of travel springs, accommodating a vast array of valve diameters;
Choose from two handwheel mechanisms: a top-mounted handwheel for traditional setups or a side-mounted handwheel that can be completely
disconnected from the actuator, enhancing installation convenience
and efficiency. The connection between actuator and valve employs a
pressing plate and sleeve design, simplifying on-site packing installation and replacement.</sup>

<sup>Optional Enhancements

Adjustable Upper Travel Limit: Allows precise control over the actuator's upward movement.
Adjustable Lower Travel Limit: Provides control over the actuator's downward movement.
Available with Top-Mounted Handwheel Mechanism for traditional use.
Side-Mounted Handwheel Mechanism available for enhanced accessibility.
Specialized Low-Temperature and High-Temperature Actuators: Engineered for extreme environmental conditions.
Low-Temperature Actuators Operating Range:
Operating efficiently in temperatures of -60 to 70 ºC.
High-Temperature Actuators Operating Range: Designed for -20 to 100 ºC.
Actuator Locking Device: Ensures secure locking of the actuator during maintenance, mirroring the fault position.
Comprehensive Options: Advanced position transmitter, manual mechanisms, and adjustable mechanical limits for maximum and minimum settings.
Supporting accessories for control circuits include positioners, pressure reducing valves, solenoid valves, limit switches, lock valves, boosters, amplifiers, pneumatic valves, and more.</sup>

Versatile Actuator Spring Ranges (psi)

Model 1-X280 SERIES with SIDE HANDWHEEL


1-X280 Series: Detailed Dimensions & Weight Specifications




Extended Service Life

1. The diaphragm cover is made of stamped steel, featuring a galvanized and painted finish designed for remarkable corrosion resistance. The paint adheres robustly, ensuring it does not peel easily. Additionally, the actuator bracket's construction from either cast or forged steel guarantees a robust and reliable structural integrity.

2. The diaphragm is constructed from premium neoprene rubber, which excels in resisting aging and chemical corrosion. This material showcases a remarkable ability to maintain its shape even under continuous stress, ensuring longevity and reliability.

3. The push rod is made of high-grade AISI420 stainless steel, featuring a nickel-plated surface that delivers superior smoothness and enhanced corrosion resistance.

4. The guide bushing is made from durable aluminum bronze, providing excellent guidance and minimal deformation at low temperatures, thus ensuring a robust air chamber seal.

5. For the sealing, an A-type sealing ring is strategically positioned below the connection point of the push rod and bracket. This design effectively prevents oil, sand, or dirt from penetrating, maintaining optimal performance.

Application Flexibility

1. All direct-acting and reverse-acting parts are universal to ensure interchangeability, allowing for versatile applications and streamlined operations.

2. The spring installation position can be adjusted based on the stroke. The integrally cast aluminum tray offers two installation positions-high and low-making installation exceptionally convenient. Meanwhile, 3, 4, or 6 springs can be configured to achieve diverse spring ranges, thereby enhancing adaptability for various operational requirements.

3. Each actuator specification includes a variety of spring options to accommodate a wide spectrum of valve sizes, ensuring comprehensive compatibility.

4. There are two types of handwheel mechanisms: top-mounted and side-mounted. The side-mounted handwheel, in particular, can be entirely detached from the actuator, offering unparalleled convenience during installation.

5. The connection between the actuator and the valve employs a compression plate and sleeve structure, which facilitates easy installation and effortless on-site packing replacement.

Actuator Options

1. Adjustable Upper Stroke Limiter: Utilized to precisely limit the upward stroke of the actuator, enhancing control and precision.

2. Adjustable Lower Stroke Limiter: Employed to restrict the downward stroke of the actuator, ensuring safety and consistency.

3. Top-Mounted Handwheel Mechanism

4. Side-Mounted Handwheel Mechanism

5. Low and High-Temperature Actuators: Engineered to perform optimally in specific environmental conditions.

6. Low-Temperature Actuators: Perfectly suited for environments where temperatures range from -60°C to 70°C.

7. High-Temperature Actuators: Tailored for environments with temperatures spanning from -20°C to 100°C, ensuring reliability and performance.

8. Actuator Locking Device: This device ensures that the actuator remains in a securely locked position during maintenance, aligning with the actuator's fail-safe position.

9. Remote Venting: When natural gas or other hazardous gases serve as the actuator's air source, the actuator housing is equipped with a venting device to prevent dangerous gas accumulation.

10. Additional Control Circuit Accessories: P80119ba9

 

Production application

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands as a pioneering beacon in the realm of control valve production, seamlessly integrating manufacturing, designing, sales, and service. With a bold vision and fast-paced development, SNT is strategically nestled in the bustling hub of Qingdao, Shandong Province, spanning an impressive 42,000 square meters. Our state-of-the-art facilities boast cutting-edge workshops and production equipment. As a high-tech enterprise endowed with independent intellectual property rights, we draw upon advanced global management and production expertise. Our talented workforce exceeds 150, with R&D specialists comprising 15% and 30% holding graduate degrees or higher. Our commitment to excellence in production management and innovative technology fuels the creation of high-quality valves extensively applied in petrochemical, oil, and coal chemical industries. Remarkably, our sales soared to nearly 100 billion in 2017.

SNT proudly possesses the TS special equipment manufacturing certificate and ISO 9001, alongside prestigious net qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological prowess is underscored by numerous National Patents, allowing us to design and manufacture a comprehensive array of valves in accordance with ANSI, API, DIN, BS, and JIS standards. By blending the strengths of globally renowned valves with our proprietary innovations, we now manufacture a vast selection of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves, among others.
Our product line further extends to T Three-eccentric Center Butterfly Valves, 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 various driving forms, including manual operation, power-driven, pneumatic, and hydraulic drive systems. Our main components are crafted from top-grade materials such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Our specifications range from 1/2" to an extensive 120", with working pressures of ANSI 150# to 2500# and operating temperatures from a frigid -196ºC up to a scorching 1100ºC.

Leveraging our advanced production technology, management, and quality assurance system, SNT Valves have earned widespread acclaim across a spectrum of industries, including petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele features industry giants such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, and Jinan branch, among others.

Placing our customers' success at the forefront, we are dedicated to fostering exceptional quality and cultivating a distinguished brand. Our impeccable quality assurance and comprehensive after-sales systems ensure that SNT valves form enduring partnerships with our customers, paving the way for shared prosperity and success.