Heavy-Duty Long Stroke Pneumatic Diaphragm Actuators with Sturdy Structure

• Customization: Available
• Brand: Snt
• Power: Pneumatic
• Model NO.: 1-X250
• Adjusted Form: Linear Stem
• 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
• Connection Point of The Push Rod and Bra: a-Type Sealing Ring
• Type: Linear Stem Motion Type 1-X250
• Actuator Size: D465/D640
• Max.Output N N.M: 12348-56484
• Air Supply(Psi): 40.50.60
• Action: Da(Diresct Action)/Ra(Reverse Action)
• Low-Temperature Actuators: Temperatures Ranging From -60 to +70 Degree
• High-Temperature Actuators: Temperatures Ranging From -20 to 100 Degree
• Transport Package: Foam and Carton Box
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000 Per/Year
• Package Size: 1.00cm * 1.00cm * 0.80cm
• Package Gross Weight: 30.000kg
• Lead Time: 15 days (1 - 50 Pieces) ; To be negotiated ( > 50 Pieces)

Product Description

 

Specifications

 

Type			Linear Stem Motion 1-X250 Series
			D46	D63	D63M
Actuator Size			465	640	640
Max. Output N  N.m		N	12348	28242	56484
		N.M	-	-	-
Air Supply(PSI)			40.50.60
Max.Stroke/Angle			120m	200m	200m
Action			DA(Direct Action) or RA(Reserve Action)
Environment temperature			Standard type:-10°C~+70°C;    Low Temp.service:-40°C~+40°C;  High Temp.service:0~+100°C
Options			Manual handle, Limit SW, Positioner etc.

Product Description

^{The 1-X250 series linear stroke pneumatic diaphragm actuator is a marvel of engineering, tailored with a unique single-spring structure. Unlike the 1-X280 series, the 1-X250 is meticulously crafted for long-stroke control, boasting an impressive maximum stroke length of up to 250mm, making it ideal for applications demanding extensive reach and precision. Compared with conventional pneumatic piston actuators, this innovative solution offers unparalleled high regulation precision coupled with an exceptionally lightweight design, making it a standout choice for performance-driven applications. It seamlessly meets the demands ofcut-off applications when paired with pneumatic control valves, boosters, and quick exhaust valves. This dynamic combination enables it to achieve remarkably fast cut-off times, reaching as swift as 1 second, ensuring efficiency and reliability in critical operations.}

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

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.

1-X250 D63 SIDE HANDWHEEL


1-X250 Series overall dimensions & mass




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: Expertly engineered to thrive in challenging environments, these actuators are designed for use in conditions with temperature ranges extending from -60°C to 70°C, ensuring reliability and performance even under the most extreme climatic conditions.

7. High-Temperature Actuators: Perfectly crafted for environments with temperatures spanning from -20°C to 100°C, these actuators deliver uncompromised functionality and efficiency.

8. Actuator Locking Device: This innovative locking device guarantees the actuator stays securely locked during maintenance, aligning with the actuator's fail-safe position, thereby enhancing safety and reliability.

9. Remote Venting: Specifically designed for scenarios where natural gas or other hazardous gases serve as the actuator's air source, the housing of these actuators is adeptly fitted with a venting device to effectively prevent the accumulation of gases and enhance operational safety.

10. Additional Control Circuit Accessories: Positioner, pressure regulator, solenoid valve, limit switch, locking valve, and booster - all meticulously integrated to provide precise control and optimized performance.

 

Production application

Company Profile

SNT Machinery (Qingdao) Co., Ltd is a distinguished producer of control valves, seamlessly integrating manufacturing, design, sales, and services under one roof. With a strategic start and rapid development, SNT is nestled in Qingdao, Shandong Province, sprawling over an impressive 42,000 square meters. Our state-of-the-art workshops and production facilities lay the foundation for a high-tech enterprise boasting independent intellectual property rights, enriched by imported advanced management and production expertise. Our team comprises over 150 dedicated professionals, with a remarkable 15% specializing in R&D, and 30% holding graduate or higher degrees. Driven by an exceptional production management team and cutting-edge technology, SNT excels in producing high-quality valves widely utilized in the petrochemical, oil, and coal chemical sectors. In 2017, our sales value soared to nearly 100 billion, reflecting our commitment to excellence.

SNT has proudly earned the TS special equipment manufacturing certificate and ISO 9001 certification, alongside the net qualification certificates from SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological advancements have also been recognized with multiple National Patents. We design and manufacture an extensive range of valves adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing the best features of renowned global valves and through our independent R&D efforts, we now produce versatile valves including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly Valves.
We offer an array of valves such as V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. Our driving forms encompass manual operation, power-driven, pneumatic, and hydraulic systems. The main materials we use include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M among others. We offer specifications from 1/2" to 120", with working pressures ranging from ANSI 150# to 2500#, and accommodate temperatures from -196ºC to 1100ºC.

Utilizing advanced production technology management and a robust quality assurance system, SNT Valves are widely adopted across petrochemical, oil, steel & iron, paper manufacturing, and power station industries. Our esteemed clientele includes SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and more, highlighting our extensive reach and industry trust.

Prioritizing user profits, we are devoted to establishing unparalleled quality and a reputable brand. Our comprehensive quality assurance and after-sales systems ensure that SNT valves collaborate seamlessly with all our customers, paving the way for mutual prosperity and success.