Innovative Multi-Spring Pneumatic Diaphragm Actuators with Painted Override Surface

• 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 remarkable 1-X280 series straight-stroke pneumatic diaphragm actuator from SNT Machinery (Qingdao) Co., Ltd. features an advanced multi-spring structure and offers two distinct forms: positive action and negative action. This design enables effortless achievement of the desired valve fault position, thanks to the reliable spring reset mechanism. Perfectly paired with a straight-stroke valve, this actuator excels in the precise control and adjustment of vital process parameters. Boasting a maximum stroke of up to 76mm, this state-of-the-art pneumatic actuator is celebrated for its impressive performance, characterized by its lightweight design, substantial thrust capacity, and a straightforward yet highly effective structure.
Introducing the 1-X250 series straight-stroke pneumatic diaphragm actuator, another innovation by SNT Machinery (Qingdao) Co., Ltd., that utilizes a sophisticated single-spring structure. This model is engineered primarily for long-stroke control applications, achieving a remarkable maximum stroke of 250mm. Compared to traditional pneumatic piston actuators, it offers superior adjustment precision while maintaining a lightweight profile. Ideal for cutting applications, it comes equipped with auxiliary components such as a pneumatic valve, speed increaser, and fast discharge valve, facilitating rapid cutting operations. The actuator delivers exceptional speed, with a minimum fast cutting time as swift as 1 second, ensuring efficiency and accuracy in 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 is constructed from premium neoprene rubber, renowned for its exceptional durability in resisting aging, chemical corrosion, and maintaining its form even under continuous stress.

3. The push rod is made of robust AISI420 with a sleek nickel-plated finish, offering superior smoothness and outstanding corrosion resistance.

4. The guide bushing is made from high-grade aluminum bronze, guaranteeing excellent guidance and minimal deformation at low temperatures, thereby preserving optimal air chamber sealing.

5. For the sealing, an A-type sealing ring is meticulously applied below the connection point of the push rod and bracket to effectively prevent oil, sand, or dirt intrusion.

Application Flexibility

1. All direct-acting and reverse-acting components are universal, to ensure perfect interchangeability.

2. The spring installation position is adjustable according to the stroke. The integrally cast aluminum tray provides dual installation positions: high and low, enhancing convenience during installation. Meanwhile, 3, 4, or 6 springs can be strategically configured to achieve an array of spring ranges, ensuring optimal performance.

3. Every actuator specification offers a variety of spring options, accommodating an extensive range of valve sizes.

4. Two types of handwheel mechanisms are available: top-mounted and side-mounted. The side-mounted handwheel, notably, can be completely detached from the actuator, streamlining installation.

5. The actuator-to-valve connection utilizes a compression plate and sleeve structure, ensuring straightforward installation and seamless on-site packing replacement.

Actuator Options

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

2. Adjustable Lower Stroke Limiter: Designed to manage the downward stroke of the actuator.

3. Top-Mounted Handwheel Mechanism

4. Side-Mounted Handwheel Mechanism

5. Low and High-Temperature Actuators: Crafted for specific environmental conditions.

6. Low-Temperature Actuators: Engineered to perform flawlessly in environments where temperatures range from -60°C to 70°C.

7. High-Temperature Actuators: Tailored for environments with temperatures spanning -20°C to 100°C.

8. Actuator Locking Device: Ensures the actuator remains secure in a locked position during maintenance, aligning with the actuator's fail-safe position.

9. Remote Venting: In scenarios where natural gas or other hazardous gases serve as the actuator's air source, the actuator housing must be equipped with a venting device to avert gas accumulation.

10. Additional Control Circuit Accessories: Positioner, pressure regulator, solenoid valve, limit switch, locking valve, booster

 

Production application

Company Profile

SNT Machinery (Qingdao) Co., Ltd. is a premier innovator and leader in the realm of control valves, seamlessly integrating manufacturing, pioneering design, comprehensive sales, and dedicated service. Positioned advantageously in Qingdao, Shandong province, our sprawling facility covers an impressive 42,000 square meters and is outfitted with state-of-the-art workshops and cutting-edge production equipment. We proudly hold the status of a high-tech enterprise, possessing independent intellectual property rights and enriched by advanced imported management and production expertise. Our dynamic team comprises over 150 skilled professionals, with 15% focusing on groundbreaking R&D and 30% holding graduate or higher degrees. Leveraging a top-tier production management team and avant-garde technology research and development, we specialize in producing vast quantities of superior-quality valves primarily employed in the petrochemical, oil, and coal chemical sectors. In 2017 alone, we achieved an astounding sales value nearing 100 billion.

SNT has proudly secured the prestigious TS Special Equipment Manufacturing Certificate and ISO 9001 accreditation, alongside acquiring the network qualification certificates of industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Boasting numerous national patents across various technologies, we excel in designing and manufacturing a comprehensive range of valves that adhere to the stringent standards of ANSI, API, DIN, BS, and JIS. By synthesizing the best features of globally renowned valves and engaging in independent research and development, we now offer a diverse array of valve types. Our portfolio includes GLOBE Valves, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, T Three-eccentric Center Butterfly Valves, and more.
Our extensive valve collection also encompasses V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves, among others. Our driving forms are versatile, including manual operations, power-driven, pneumatic, and hydraulic drives. We meticulously select materials for main parts such as A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, ensuring durability and performance. Specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500# and working temperatures spanning -196ºC to 1100ºC.

With a robust foundation in advanced production technology management and a rigorous quality assurance system, SNT Valves have established a strong presence across industries such as petrochemicals, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes industry leaders like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, and more, all of whom trust in the unparalleled quality and reliability of our products.

Prioritizing our users' success is our driving force, as we commit to building a reputation for exceptional quality and a distinguished brand. Our comprehensive quality assurance and after-sales systems are the cornerstones of our promise, ensuring that SNT valves stand shoulder to shoulder with our clients to foster mutual growth and prosperity.