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

• 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 showcases an innovative multi-spring design, available in both positive and negative action forms. This versatility allows for seamless adjustment of the valve's fault position using the reliable spring reset mechanism. When paired with a straight-stroke valve, it excels in controlling and adjusting process parameters with precision. Enjoy the exceptional performance of this pneumatic actuator, boasting a maximum stroke of 76mm. Its lightweight yet powerful thrust, combined with a straightforward structure, makes it a top choice for high-performance applications.
The 1-X250 series straight-stroke pneumatic diaphragm actuator is distinguished by its robust single-spring structure. Specifically designed for long-stroke control, it offers an impressive maximum stroke of 250mm. When compared to conventional pneumatic piston actuators, it delivers superior adjustment accuracy and a lighter profile. Suitable for diverse applications, including cutting scenarios, it is equipped with a pneumatic valve, a speed increaser, and a fast discharge valve to enable rapid cutting actions. Impressively, it can achieve a minimum fast cutting time of just 1 second, ensuring efficiency and precision in operations.}

 

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>Prolonged operational excellence
Crafted from high-quality stamped steel, the diaphragm cover of our actuator boasts a surface treated with galvanization and premium painting, offering unmatched corrosion resistance. This finish is designed to withstand harsh conditions without chipping or peeling, ensuring long-lasting durability.
Built with cast or forged steel, the actuator bracket provides a steadfast and dependable structure, offering unparalleled reliability in demanding applications.
Constructed from durable neoprene, the diaphragm exhibits extraordinary resistance to aging, chemical exposure, and maintains its form under continuous stress, promising reliability and longevity.
The push rod is expertly crafted from AISI420 steel, with an extruded surface and nickel plating, providing a high-standard finish that resists corrosion and ensures smooth operation.
Engineered with precision, the guide bushing is made from aluminum bronze, delivering exceptional guidance with minimal deformation at low temperatures, thereby guaranteeing optimal air chamber sealing.
The lower connection between the push rod and the bracket is secured with an A-type sealing ring, effectively preventing the infiltration of oil, sand, and dirt, thereby enhancing performance and longevity.

Versatile application
Interchangeability of all positive and reaction components ensures adaptability across various applications.
The adjustable spring installation position allows customization according to the actuator stroke. The integrally cast aluminum tray offers high and low installation options, facilitating effortless setup. Additionally, users can opt to install 3, 4, or 6 springs to
achieve customized spring ranges tailored to specific operational requirements.
Each actuator specification supports a broad array of travel springs, accommodating a wide spectrum of valve diameters for enhanced application flexibility.
Available with dual handwheel mechanism options: a top-mounted handwheel and a side-mounted handwheel, with the latter offering complete
detachment from the actuator for easy installation.
The innovative connection system between the actuator and valve, featuring a
pressing plate and sleeve design, facilitates effortless installation and on-site packing replacement.</sup>

<sup>Customization Options

Adjustable upper travel limit: Designed to restrict the upward movement of the actuator.
Adjustable lower travel limit: Designed to restrict the downward movement of the actuator.
Top-mounted handwheel mechanism available.
Side-mounted handwheel mechanism available.
Specialized temperature actuators: Designed for operation in specific ambient temperatures.
Low-temperature actuators operational range:
-60 to 70 ºC.
High-temperature actuators operational range: -20 to 100 ºC.
Actuator locking device: Ensures the actuator remains securely locked during maintenance, aligning with the actuator's fault position for safety.
Versatile components: Position transmitters, manual mechanisms, maximum and minimum adjustable mechanical limits.
Comprehensive control circuit accessories: Including positioners, pressure reducing valves, solenoid valves, limit switches, lock valves, boosters, amplifiers, and pneumatic valves, offering full control solutions.</sup>

Actuator spring ranges (psi) available for customization

1-X280 SERIES featuring SIDE HANDWHEEL configuration


1-X280 series comprehensive dimensions & weight specifications




Service Life Assurance

1. The diaphragmcover iscrafted fromstamped steel, featuring a galvanized and painted surface to resist corrosion. The durable paint is specifically designed to resist peeling. The robust actuator bracket, made from cast or forged steel, ensures a trustworthy and lasting 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, and booster, each component meticulously designed to elevate performance and reliability.

 

Production application

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands tall as a premier producer of control valves, seamlessly integrating manufacturing, design, sales, and service into a singular powerhouse. With a high starting point and rapid development, SNT is strategically situated in the vibrant city of Qingdao, Shandong province, sprawling across an impressive 42,000m2, housing state-of-the-art workshops and cutting-edge production equipment. As a high-tech enterprise, SNT boasts independent intellectual property rights, enriched by imported advanced management and production expertise. With a dynamic team exceeding 150 employees, where 15% are R&D specialists and 30% hold graduate or higher degrees, SNT thrives on a robust production management team and groundbreaking technology research and development. We are proud producers of vast quantities of top-tier valves, serving crucial industries such as petrochemicals, oil, and coal chemicals. In 2017 alone, we achieved an astounding sales value nearing 100 billion.

SNT has proudly earned the TS special equipment manufacturing certificate and ISO 9001 accreditation, alongside the net qualification certificates of prestigious entities like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Moreover, we have secured numerous national patents across various technologies. Our proficiency encompasses the design and manufacturing of a comprehensive series of valves adhering to ANSI, API, DIN, BS, and JIS standards. By amalgamating the advantages of renowned valves worldwide with our independent research and innovation, we have mastered the manufacture of diverse valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves.
Our extensive range also embraces 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, equipped with various driving forms such as manual, power-driven, pneumatic, and hydraulic operations. The core materials for main parts include A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, with specifications spanning 1/2"~120", working pressures from ANSI 150#~2500#, and temperatures ranging from -196ºC to 1100ºC.

Harnessing advanced production techniques and a stringent quality assurance system, SNT Valves are extensively utilized across industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and many more, reflecting our dedication to excellence.

With user profits at the forefront, SNT is dedicated to establishing a reputation of exceptional quality and a distinguished brand. Our flawless quality assurance and after-sales support systems ensure that SNT valves unite with our customers to forge a path of mutual success and prosperity.