Long Stroke Pneumatic Diaphragm Actuators with Single-Spring Structure Design

• 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

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, an epitome of engineering excellence, boasts a sophisticated single-spring structure. In a class of its own compared to the 1-X280 series, this actuator is meticulously crafted for unparalleled long-stroke control, with an impressive maximum stroke reaching up to 250mm. With its innovative design and performance, this actuator surpasses traditional pneumatic piston actuators, offering not only superior regulation precision but also a remarkably lightweight design that enhances versatility and efficiency. Furthermore, it seamlessly adaptsfor use in cut-off applications. When paired with pneumatic control valves, boosters, and quick exhaust valves, it ensures rapid cut-off times as swift as 1 second, making it a critical component for high-performance operational needs.}

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: Suitable for environments with temperatures ranging from With an impressive operability range, our product is engineered to function flawlessly in challenging conditions from -60°C to 70°C, ensuring superior performance in extreme cold and heat alike.

7. High-Temperature Actuators: Crafted for high resilience, these actuators are perfect for high-temperature environments, operating seamlessly across a broad spectrum from -20°C to 100°C, providing unwavering reliability and efficiency.

8. Actuator Locking Device: Our precise actuator locking device guarantees that the actuator stays securely locked during maintenance. It aligns with the fail-safe position, ensuring safety and operational integrity.

9. Remote Venting: Essential for safety, when utilizing natural gas or hazardous gases as the air source, our actuator features a venting mechanism to effectively prevent harmful gas accumulation within the housing.

10. Additional Control Circuit Accessories: Positioner, pressure regulator, solenoid valve, limit switch, locking valve, booster: Enhance your control systems with a variety of sophisticated accessories designed to optimize performance and ensure seamless operation.

 

Production application

Company Profile

SNT Machinery (Qingdao) Co., Ltd. stands at the forefront of the control valve industry, seamlessly integrating manufacturing, design, sales, and services into a singular, dynamic powerhouse. With our operations rooted in the vibrant city of Qingdao, Shandong province, we proudly occupy a sprawling 42,000 square meters, featuring state-of-the-art workshops and cutting-edge production facilities. As a distinguished high-tech enterprise, we boast independent intellectual property rights alongside advanced management and production techniques imported from global leaders. Our team of over 150 dedicated employees includes a robust 15% of R&D specialists, with 30% holding graduate or higher degrees. Leveraging an elite production management team and pioneering research and development capabilities, we deliver an impressive array of superior quality valves, purpose-built for the petrochemical, oil, and coal chemical sectors. Our 2017 sales value approached an astounding 100 billion, highlighting our remarkable growth trajectory.

SNT proudly holds the prestigious TS Special Equipment Manufacturing Certificate and ISO 9001 certification, complemented by net qualification certificates from industry titans SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. With numerous national patents in our technological arsenal, we design and manufacture an extensive range of valves adhering to international standards such as ANSI, API, DIN, BS, and JIS. By synthesizing the best features of world-renowned valves with our own innovative R&D, we produce an exceptional variety of 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.
Our diverse product lineup extends to V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and even Cryogenic Valves, with driving options ranging from manual to power-driven, pneumatic, and hydraulic systems. Our main components are crafted from top-grade materials such as A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, accommodating specifications of 1/2" to 120", and enduring working pressures of ANSI 150# to 2500#, all while withstanding temperatures from -196ºC to 1100ºC.

With a foundation built on advanced production technology management and a rigorous quality assurance system, SNT valves are trusted and deployed across industries including petrochemical, oil, steel & iron, paper manufacturing, and power generation. Our esteemed clientele features industry leaders such as SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, and more, demonstrating our widespread acceptance and reliability.

At SNT, we prioritize our users' profits, dedicating ourselves to cultivating unparalleled quality and a respected brand. Our comprehensive quality assurance and after-sales systems ensure that SNT valves collaborate seamlessly with our clients, driving mutual prosperity and success.