Heavy-Duty Pneumatic Piston Actuator Size 1: 1-X400 P250 (S) for Tough Environments

• Customization: Available
• Brand: SMC
• Power: Pneumatic
• Model NO.: 1-X400
• Working Type: Straight Trip
• Pressure: Medium Pressure
• Work Temperature: Normal Temperature
• Acting Type: Double Acting
• Material: Stainless Steel
• Customized: Customized
• Structure: Piston Type
• Size 1: 1-X400 P200(S)
• Size 2: 1-X400 P250(S)
• Size 3: 1-X400 P300(S)
• Size 4: 1-X400 P400(S)
• Size 5: 1-X400 P500(S)
• Mode of Action: Direct Acting/Reverse Acting
• Actuation Mode: Single Acting/Double Acting
• Rated Stroke: 17/25/34/45/60/76/100/120/150/200m
• Air Supply Pressure: 0.3/0.36/0.45MPa
• Spring Range: 0.10~0.20MPa/0.12~024MPa/0.15~0.30MPa
• Top-Mounted Handwheel Specifications: P200(S)/P250(S)/P300(S)
• Side-Mounted Handwheel: P300(S)/P400(S)/P500(S)
• Diaphragm Diameter (mm): 200/250/300/400/500
• Effective Area (Cm²): 230/420/600/920/2480
• Cutoff Times: 1s/2s/3s/4s
• Transport Package: Wooden
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 500000PCS/Year

Product Description

 

Product Parameters

Type			Pneumatic Piston Actuator
Size			1-X400 P200(S)	1-X400 P250(S)	1-X400 P300(S)	1-X400 P400(S)	1-X400 P500(S)
Diaphragm Diameter (mm)			200	250	300	400	500
Effective Area (cm²)			230	420	600	920	2480
Air Supply Pressure			0.30(0.1-0.2) 0.36(0.12-0.24) 0.45(0.15-0.30) MPa
Rated Stroke(mm)			17/25	25/34	34/45	60/76/100	120/150/200
Output Thrust (N)	Single Acting	030(0.1-0.2)Mpa; 036(0.12-0.24)Mpa; 0.45(0.15-0.30)Ppa	2770	4035	6240	11090	17320
			3320	4824	7480	13300	20780
			4160	6036	9350	16620	25970
	Double Acting	0.30 Mpa 0.36Mpa 0.45Mpa	8320	12072	18700	33260	51960
			9970	14484	22450	39900	62340
			12470	18096	28050	49880	77930
^Hysteresis			^≤1%FS(with positioner)- Compliant with GBT4213-97 Standard
Linear			^≤2%FS(with positioner)- Compliant with GBT4213-97 Standard
Air Chamber Seal			Pressure Drop ≤5.0KPa/5min-GBT4213-97 Standard
Service Life			≥100000-Compliant with GBT4213-97 Standard
Envrionment Temperature			Standard Type:-10~+70ººC High Temperature-40~+100ºC
Attachments			Positioner/Filter pressure reducing valve/Speed booster/Solenoid valve pneumatic valve /Stop valve/Speed controller/Limit switch
Optional accessories			Position transmitter/Manual mechanism/Maximum adjustable mechanical limit/Minimum adjustable mechanical limit/Special interface/Specified coating/Connection positioning hole diameter/Push rod extension length/Thread at the connection

 

<sup>Introducing the 1-X400 series: a marvel of engineering in linear stroke piston-type pneumatic actuators. These state-of-the-art devices employ cold-drawn hydraulic pipes as cylinder bodies, expertly honed and extruded to dramatically minimize wear on dynamic sealing elements. This meticulous design significantly enhances the actuator's durability. When compared to membrane-type actuators of similar specifications, the 1-X400 series stands out with its superior thrust capabilities. With a streamlined structure, lightweight form, and compact dimensions, this high-performance actuator sets a new standard in pneumatic linear stroke technology.

The versatile 1-X400 series linear stroke piston-type pneumatic actuators are offered in both double-acting and single-acting models. When paired with linear stroke valves, they excel in regulation and on-off control. Enhanced with a suite of accessories including pneumatic control valves, quick exhaust valves, and pneumatic actuators, these devices ensure rapid and precise cutoffs. Experience swift response times with cutoff durations available at 1S, 2S, 3S, and 4S among other configurations.</sup>

Single-action (S.A.) actuators feature a spring-opposed piston that is actuated by air pressure. They provide a straightforward fail-safe action-should air pressure fail, the spring load takes over, moving the stem to either open or close the valve port as required by the fail-safe action. These actuators demonstrate excellent stability, even when the plug load fluctuates.

 

 

 

In contrast, double-action (D.A.) actuators offer higher net thrusts, although their size increases with the air pressure and stroke demands.

Double-action actuators equipped with a return spring present an ideal compromise: the full force of air pressure on one side of the piston is counterbalanced by a combination of a compressed spring and air pressure on the opposite side. For achieving a fail-safe action, there's no need for complex or unreliable pneumatic systems. Additionally, the air pressure's net thrust is only partially diminished by the spring's force, ensuring a robust and efficient performance.

 

Product Description

DESIGN DETAILS

PRESSURE/TEMPERATURE RATING
In the realm of robust performance, 8 bar serves as both the rated supply pressure and the threshold for maintaining the seal integrity of our sliding piston seals. Yet, our commitment to quality ensures that every actuator undergoes rigorous hydrostatic testing at 10.5 bar prior to delivery. A testament to durability, the temperature limits for ongoing operations at an 8-bar pressure can be found in the materials table, offering you assured reliability.

ACTUATOR BODY
Crafted with precision, our actuator cylinder originates from a meticulously engineered steel tube.
The interior surface boasts a lapped, chromium-plated, and polished finish for superior durability.
The dual end caps, made from aluminum or steel cast, are available in multiple configurations to satisfy specific assembly requirements on valves or

for operation, with various connection options, including a fork on the top or bottom for pivot assemblies-ideal for actuating butterfly valves.
Featuring a flange for sturdy coupling on valve yokes, this design is perfect for activating globe or angle valves, providing versatile application possibilities.

PISTON
Our pistons are crafted from high-strength steel, equipped with one (S.A.) or two (D.A.) rubber sealing rings, and two (S.A.) or one (D.A.) loaded-Teflon guiding skid for enhanced performance.

STEM
Expertly machined from stainless steel, the stem is ground, rolled, and threaded at the exposed end. The actuator stem seamlessly connects to the valve stem via a two-piece, bored and threaded block, securing the screw ends of both stems.
The stem is stabilized by a double bronze bushing in the lower head, which also hosts a felt ring to clean the stem alongside a sealing ring (excluding S.A. direct-acting actuators), effectively preventing leakage.

Customised execution on request

SNT Machinery specializes in crafting tailored solutions to meet diverse custom requirements such as:

• On-off or modulating execution
• Designs compatible with offshore or highly corrosive environments
• Tailored coupling yokes to suit any valve topwork configuration
• Incorporation of mechanical end stop screws for precise opening, closing, or both directions
• Rapid response design for HIPPS or Emergency Shutdown applications
• Incorporations of dampers or specialized quick exhaust valves built-in for unique needs
• Subsea design tailored for underwater applications

For additional customized requirements, please reach out to our sales department for a comprehensive technical evaluation.

Controls

The 1-X400 actuators come optionally fully equipped with comprehensive control component packages to meet customer specifications and align with technical standards for a variety of industrial control scenarios, whether on/off, modulating, or ESD service.
Our controls are the embodiment of SNT's expertise and extensive experience in valve automation, promising reliability and precision.






 

Product Feature

Model: 1-X400 SERIES: CYLINDER PNEUMATIC ACTUATORS
Configuration: DStyle: DOUBLE ACTING - Engineered for Reliability



 

1	BOLT	11	CYLINDER	21	STROKE PLATE
2	ACTUATOR YOKE	12	BOLT	22	STROKE INDICATOR
3	STEM CONNECTOR	13	UPPER CYLINDER COVER	23	SCREW
4	ANTI-ROTATION PLATE	14	WASHER	24	FLANGE
5	SCREW	15	NUT	25	SEAL RING
6	ACTUATOR STEM	16	LIFTING BOLT	26	O-RING
7	BOLT	17	WASHER	27	GUIDING BUSHING
8	LOWER CYLINDER COVER	18	NUT	28	O-RING
9	O-RING	19	O-RING	29	O-RING
10	PISTON	20	GUIDING	30	SCREW

Model: 1-X400 SERIES: CYLINDER PNEUMATIC ACTUATORS
Configuration: SStyle: SINGLE ACTING (DIRECT - AIR TO CLOSE) - Designed for Efficiency



 

1	BOLT	21	NUT	41	SCREW
2	ACTUATOR YOKE	22	O-RING	42	STROKE INDICATOR
3	STEM CONNECTOR	23	SCREW	43	O-RING
4	ANTI-ROTATION PLATE	24	YOKE	44	WASHER
5	SCREW	25	O-RING	45	WASHER
6	ACTUATOR STEM	26	LEAD SCREW	46	LOCKNUT
7	BOLT	27	BOLT	47	BEARING
8	LOWER CYLINDER COVER	28	BEVEL GEARBOX	48	PIN
9	SCREW	29	O-RING	49	BEARING STEM
10	SPRING GUIDING	30	GUIDING	50	PIN
11	NUT	31	O-RING	51	O-RING
12	SPECIAL NUT	32	SPRING SEAT	52	SEAL RING
13	WASHER	33	BEARING	53	FLANGE
14	BOLT	34	PIVOT	54	O-RING
15	CYLINDER	35	BEARING	55	O-RING
16	SPRING	36	BOLT	56	GUIDING BUSHING
17	PISTON	37	WASHER	57	SCREW
18	UPPER CYLINDER COVER	38	NUT	58	ANTI-ROTATION PLATE
19	WASHER	39	AIR VENT	59	PIN
20	NUT	40	STROKE PLATE

Model: 1-X400 SERIES: CYLINDER PNEUMATIC ACTUATORS

Configuration: SStyle: SINGLE ACTING (REVERSE - AIR TO OPEN) - Crafted for Performance

1	BOLT	16	WASHER	31	SCREW
2	ACTUATOR YOKE	17	UPPER CYLINDER COVER	32	O-RING
3	STEM CONNECTOR	18	SCREW	33	O-RING
4	ANTI-ROTATION PLATE	19	SPRING GUIDING	34	GUIDING BUSHING
5	SCREW	20	LIMIT ROD	35	PLUG
6	ACTUATOR STEM	21	LIFTING BOLT	36	PLUG
7	BOLT	22	AIR VENT	37	PIN
8	WASHER	23	O-RING	38	SEAL RING
9	LOWER CYLINDER COVER	24	O-RING
10	CYLINDER	25	O-RING
11	PISTON	26	GUIDING
12	NUT	27	STROKE PLATE
13	SPRING	28	STROKE INDICATOR
14	BOLT	29	SCREW
15	NUT	30	FLANGE

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Company Profile

<sup>SNT Machinery (Qingdao) Co., Ltd. stands as a leading innovator in control valve production, merging excellence in manufacturing, design, sales, and service. Positioned at a high starting point for rapid development, SNT is strategically located in the bustling city of Qingdao, Shandong Province, sprawling over a vast 42,000m² area. Our state-of-the-art workshops and top-tier production equipment reflect our dedication to high-tech advancement, bolstered by our independent intellectual property rights and integration of world-class management and production techniques. With a dynamic workforce exceeding 150 professionals, 15% of whom are specialized R&D experts, and 30% holding graduate or higher degrees, we pride ourselves on a robust production management team and pioneering research and development capabilities. Our portfolio includes high-quality valves, essential to the petrochemical, oil, and coal chemical sectors, achieving an impressive sales milestone nearing 100 billion in 2017.

SNT proudly holds the TS Special Equipment Manufacturing Certificate and the ISO 9001 certification, alongside prestigious network qualification certificates from industry giants such as SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our commitment to innovation is recognized through numerous national patents. We are adept at designing and manufacturing an extensive range of valves tailored to ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of globally renowned valve technologies and infusing them with our own research insights, we craft a diverse array 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 comprehensive valve offerings extend to V ball valves, high wear-resistant ball valves, high-pressure steam valves, micro-flow control valves, self-operated control valves, and cryogenic valves. Our driving mechanisms encompass manual, power-driven, pneumatic, and hydraulic operations. We use premium materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, ensuring durability and reliability across specifications ranging from 1/2" to 120", withstanding pressures of ANSI 150# to 2500#, and operating in temperatures from -196ºC to 1100ºC.

With cutting-edge production technology management and a stringent quality assurance framework, SNT valves are integral to industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Esteemed clients include SINOPEC QILU and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA Guangxi and Ningxia branches, and many more, who consistently rely on our expertise and quality to fuel their operations.

At SNT, we prioritize our users' profitability, dedicating ourselves to crafting unparalleled quality and establishing an esteemed brand. Our meticulous quality assurance and comprehensive after-sales service systems ensure that SNT valves forge successful partnerships with our customers, driving mutual prosperity and success.</sup>