Durable Pneumatic Piston Actuator with Adjustable Stroke Length

• 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>The 1-X400 series linear stroke piston-type pneumatic actuators utilize cold-drawn hydraulic pipes as cylinder bodies. Through honing and extrusion processes, the wear of dynamic sealing elements is significantly reduced, enhancing the durability of the actuator. Compared to membrane-type linear stroke actuators of the same specifications, they offer greater thrust. With a simple structure, lightweight design, and compact size, they represent a high-performance pneumatic linear stroke actuator.

The 1-X400 series linear stroke piston-type pneumatic actuators are available in both double-acting and single-acting configurations. When combined with linear stroke valves, they can be used for regulation or on-off control. Equipped with accessories such as pneumatic control valves, quick exhaust valves, and pneumatic actuators, they can achieve rapid cutoffs, with cutoff times of 1S, 2S, 3S and 4S and other levels.</sup>

Single-action (S.A.) actuators consist of a spring-opposed piston actuated by air pressure. They offer the advantages of a simple fail-safe action (when air pressure fails, the compressed spring load overcomes the pressure load and moves the stem to open or to close the valve port according to required fail-safe action),and of a good stability when the load on the plug varies.

 

 

 

On the other hand in comparison with double-action (D.A.) actuators, they show lower net thrusts and overall dimensions growing more and more with the increase of supplied air pressure and required stroke.

Double-action actuators with return spring may offer a good compromise: the full thrust of the air pressure on one side of the piston,is balanced partly by a compressed spring and partly by the air pressure on the other side of the piston. So to get a fail-safe action,there will be no need for complicate and little reliable pneumatic apparatus and, moreover,the net thrust of air pressure is only partly reduced by the spring thrust.

 
 

Product Description

DESIGN DETAILS

PRESSURE/TEMPERATURE RATING
8 bar represent both the rated supply pressure of cylinder and the limit for tightness of sliding seals of piston. However all actuators are hydrostatically tested at 10.5 bar before delivery. Temperature limits for continuous service at 8 bar are given in the table of materials.

ACTUATOR BODY
Cylinder is worked from a precision steel tube.
Inside surface is lapped, chromium-plated and polished.
The two heads are aluminium or steel cast and are available in some different shapes to meet the requirements for assembly on valves or for operatio

with a fork on the upper or lower head for pivoting assemblies (e.g. to actuate butterfly valves
with a flange for stiff assembling on valve yokes (e.g. to actuate globe or angle valves)

PISTON
Piston is high-strength steel and is fitted with one (S.A.) or two (D.A.) rubber sealing rings and two (S.A.) or one (D.A.) loaded-teflon guiding skid.

STEM
Stem is machined from a stainless steel rod, ground, rolled and threaded at the end which remains outside the cylinder. Actuator stem is connected to valve stem by a two-piece, bored and threaded block, clamping the screwed ends of the two stems.
Stem is guided by a double bronze bushing fitted in the lower head which also holds a felt ring to wipe the stem and a sealing ring (except for S.A. direct-acting actuators) to pre-vent leakage.

Customised execution on request
 
SNT production is highly oriented in designing special execution to satisfy a wide range of customised requirement such as :
 

• On-off or modulating execution
• Execution for offshore or highly aggressive environmental
• Design of customised coupling yokes to fit any kind of valve topwork
• Execution with mechanical end stop screws in opening or closing or both directions
• Fast acting execution for HIPPS or Emergency Shutdown application
• Execution with dampers or special integral quick exhaust valve
• Subsea design

Please contact our sales department for technical evaluation in case of different customised requirement.

Controls

1-X400 actuators can be supplied fully equipped with control component packages to full fill customer requirement and comply to technical specifications for the various industrial control applications for on/off, modulating or ESD service
Controls are designed based on SNT technical skill and long experience in valve automation.






 

Product Feature

1-X400 SERIES CYLINDER PNEUMATIC ACTUATORS
DOUBLE ACTING



 

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

1-X400 SERIES CYLINDER PNEUMATIC ACTUATORS
SINGLE ACTING( DIRECT - AIR TO CLOSE)



 

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

1-X400 SERIES CYLINDER PNEUMATIC ACTUATORS

SINGLE ACTING (REVERSE - AIR TO OPEN)

 

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

 

Test and Detection Equipments

          LT impact testing machine                                              UT test equipment                                     MT test equipment

 

          RT test equipment                                                   PT test equipment                              Metallurgical microscope

 Hardness test equpment
 

Advanced production and manufacturing systems
 

                CNC lathe                                                        internal and external grinding machine           Plasma welding machine
 

  
          4m Stem processing equipment                                      CNC wire cutting                      CNC drilling and milling equipment
 

Company Profile

<sup>SNT Machinery(Qingdao) Co. , Ltd is a producer of control valves, combines manufacturing, designing, sales and services in one. It has high starting point quick development SNT is located in Qingdao, Shandong province with an area for 42000m2, equipped with modern workshop and production equipment. It is a high-tech enterprise with independent intellectual property rights and imported advanced management and production experience. Now it has more than 150 workers, and R&D specialist accounts for 15%, graduates or with higher degrees account for 30%. Depending on high quality production management team and innovative technology research and development, now we produce large quantities of high quality vales used in petrochemical, oil and coal chemical industries. We have a sales value to nearly 100billion in the year 2017.

Now SNT has got the TS special equipment manufactuuring certificate and ISO 9001, and has acquired the net qualification certificate of SINOPEC,CNOOC, PETROCHINA and SINOCHEM. And we have got the National Patent in many technologies. We can design and manufacture all series of valves according to ANSI, API, DIN, BS, JIS standards. Combining the advantages of famous valves all cross the world and with independent research and development, until now we can manufacture all kinds of valves, including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric  Rotary Valves, T 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, Cryogennic Valves tc,  Driving form includes manual operation, power-drinven, pneumantic and hydraulic drive. Materials for main parts are A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M etc. Specification 1/2"~120", working pressure ANSI 150#~2500#, working temperature -196ºC~1100ºC.

Relying on advanced production technology management and qulity assurance system, SNT Valves have been widely used in petrochemical, oil, steel&iron, paper manufacturing and power station industries. Our customers include SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINC Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Changling branch, Jinan branch etc.

We make user's profits as our priority, devoting ourselves to the establishment of excellent quality and good brand, Our perfect quality assurance and after-sales systems guarantee that SNT valves join hands with all our customers and creat prosperity.</sup>