Stainless Steel Pneumatic Actuator

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JSW Stainless Steel Pneumatic Actuator - Corrosion-Resistant Series

Product Overview

JSW series stainless steel pneumatic actuator is an industrial actuating device driven by pneumatic pressure to control the opening, closing or regulation of valves, dampers, and louvers. It is classified into double acting and single acting types: double acting actuators rely on air pressure for both opening and closing actions, while single acting (spring return) actuators use air pressure for opening and spring force for automatic reset.
Made of high-quality stainless steel for core parts (cylinder block, piston, pinion), this series features excellent corrosion resistance and wear resistance, enabling long-term service in highly corrosive environments. As the first manufacturer in China to produce stainless steel pneumatic actuators with dual independent external travel stop adjustment bolts, JSW integrates exclusive technologies such as fully machined piston teeth and cam inner bores, ensuring precise operation and long durability. Compliant with ISO5211, DIN3337, VDINDE-3854, and NAMUR standards, it is widely used in offshore drilling platforms, shipbuilding, pharmaceuticals, food hygiene, and other demanding industries.

What is a Pneumatic Actuator?

Pneumatic actuator is an actuating device that uses pneumatic pressure to drive the opening, closing or regulating of valves. Pneumatic actuators can also be divided into two types: single acting and double acting: the switching action of the actuator is driven by a gas source, which is called Double Acting. The switch action of Spring Return (single acting) is only driven by the air source when it is turned on, and the spring returns when it is turned off.

Pneumatic actuators operate within standard industrial pressure ranges, typically 80 to 100 psi. The common applications: valve and damper control, turbine governors and fluid drives, louvers and inlet vane control.

JSW Actuator Core Advantages

Superior Corrosion Resistance: Stainless steel cylinder block, piston, and fasteners resist harsh environments (saltwater, chemicals), ideal for offshore and pharmaceutical applications.
Dual Independent External Adjustment: Exclusive ±5° travel stop adjustment bolts for precise and easy calibration, a pioneering design in China.
High-Precision Engagement: Fully machined piston teeth and pinion ensure low backlash rack-and-pinion engagement, maximizing transmission efficiency.
Durable Cam Design: Machined cam inner bore fits the pinion’s curve perfectly, reducing friction and extending service life.
International Standard Compliance: Meets ISO5211, DIN3337, and NAMUR standards, compatible with global accessories (solenoid valves, positioners).
Food/Pharmaceutical Grade Adaptability: Stainless steel material and non-toxic seals (Viton/NBR) meet hygiene requirements for food and pharmaceutical industries.

Application

Offshore Drilling Platforms: Resists saltwater corrosion to control valves for oil/gas transmission systems.

Shipbuilding Industry: Adapts to marine environments, regulating shipboard valves and dampers.

Pharmaceutical Industry: Complies with hygiene standards, controlling fluid valves in drug production lines.

Food Hygiene Industry: Non-toxic, corrosion-resistant, suitable for food processing equipment (e.g., beverage filling lines).

Chemical Industry: Withstands chemical media corrosion, controlling reaction vessel valves and pipelines.

General Industrial Valves/Dampers: For high-corrosion or hygiene-sensitive industrial scenarios requiring reliable operation.

Technical Specifications

Parts & Materials

No.	Description	qty	Standards Material
1	Indicatr Serw	1	Plastic
2	Indicator	1	Plastic
3	Snap Ring	1	Stainlessstel
4	Washer	1	Stairless steel
5	Outside Washer	1	Engineering Plastic
6	Cylinder block	1	Stairless steel
7	Piston	2	Stainless seel
8	Piston O-ring	2	Viton/NBR
9	Piston Bearing	2	Engineering Plastic
10	Spring	0-12	Spring Steel
	Sprina RetainerlL.R)		66 NMon 66
	Retainer Connector		Brass
11	End-Cap O-ring	2	VitonINBR
12	End-Cap	2	Stairlesseel
13	Stop screw	2	Stainless steel
14	End-Cap Stop Screw	8	Stainless steel
15	Guide Piston	2	66 Nylon 66
16	Oring(Adjiust screw)	2	NBR
17	Nut(Adiust screw)	2	Stainless steel
18	Adjiust screw	2	Stainless stel
19	Plug	2	NBR
20	Inside Washer	1	Engineering Plastic
21	Cam	1	Stairless steel
22	Bearina Top	1	Engineering Plastic
23	O-ring(Top)	1	VitonINBR
24	Pinion	1	Stainless steel
25	Bearing Bottom	1	Engineering Plastic
26	O-ring Bottom	1	Viton/NBR

Pneumatic actuator size and connection size diagram

Modelo	A	B	C	D	G	Hx1	N	J	K	L	M	Air Connection
JSW-45	138	64	77	20	14	80×30	11	Φ50	Φ36	4-M6x10	4-M5x7.5	NPT1/4″
JSW-52	146	72	79	20	14	80×30	11	Φ50	Φ36	4-M6x10	4-M5x7.5	NPT1/4″
JSW-63	173	88	92	20	18	80×30	14	Φ70	Φ50	4-M8x13	4-M6x10	NPT1/4″
JSW-83	204	108	113.5	20	21	80×30	17	Φ70	Φ50	4-M8x13	4-M6x10	NPT1/4″
JSW-105	270	133	137	20	26	80×30	22	Φ102	Φ70	4-M10x16	4-M8x13	NPT1/4″
JSW-125	302	155	157	20	27	130×30	22	Φ102	Φ70	4-M10x16	4-M8x13	NPT1/4″
JSW-140	394	172	173	20	32	130×30	27	Φ125	Φ102	4-M12x20	4-M10x16	NPT1/4″
JSW-160	456	198	193	20	34	13.x30	27	Φ125	Φ102	4-M12x20	4-M10x16	NPT1/4″
JSW-210	568	257	246	30	40	130×30	36	Φ140	/	4-M16x24	/	NPT1/4″
JSW-24D	608	291	260	30	50	130×30	46	Φ165	/	4-M20x25	/	NPT1/4″
JSW-300	820	354	336	30	60	130×30	46	Φ165	Φ165	4-M20x25	M20x25	NPT1/2″
JSW-400	934	464	516	30	60	130×30	55	Φ254	Φ165	8-M16x25	M20x25	NPT1/2″

Mounting Standard

Air supply connection is designed in accordancewith NAMUR Standard to install solenoid valves.

The Namur drive pinion and the Namur top mounting connection permit direct installation of accessories such as limit switch box and positioner.

Bottom mounting connection is designed in accordance with ISO5211 and DIN3337 standards for direct mounting with valve gear boxes or mounting brackets.

OUTPUT TORQUE WITH DOUBLE ACTING

Output Torque Table of JSW WALTEC ® Series Pneumatic Actuators with Double Acting

	Air pressure(Bar)
Modelo	3	4	5	6	7	8
	Output Torque of Air to Springs (Nm)
JSW-45DA	9.1	12.1	15.1	18.1	21.1	24.1
JSW-52DA	12	16	20	24	28	32
JSW-63DA	21.7	28.9	36.1	43.3	50.6	57.8
JSW-83DA	42.8	57	71.3	85.5	99.8	114
JSW-105DA	97.7	130.3	162.9	195.5	228	260.6
JSW-125DA	173.3	231	288.8	346.5	404.3	462
JSW-140DA	260.7	347.6	434.5	521.4	608.3	695.2
JSW-160DA	397.2	529.6	662	794.4	926.8	1059.2
JSW-210DA	798	1064	1330	1596	1862	2128
JSW-240DA	1154.3	1539	1923.8	2308.5	2693.3	3078
JSW-300DA	2291.4	3055.2	3819	4582.8	5346.6	6110.4
JSW-400DA	4872	6496	8120	9744	11368	12992

Output Torque of Pneumatic Actuator with Spring Return

Modelo	Spring Qty	Springs’ output		3		4		5		6		7

				Output Torque of Air to Springs (Nm)
		0°	90°	0°	90°	0°	90°	0°	90°	0°	90°	0°	90°
		start	end	start	end	start	end	start	end	start	end	start	end
JSW-45SR	2	4.6	7.4	4.2	1.3	7.2	4.3	10.2	7.3
	3	5.8	9.2			6	2.4	9	5.4	12	8.4	15	11.4
	4	7	11.1					7.8	3.5	10.8	6.5	13.8	9.5
JSW-52SR	5	3.6	5.4	6.5	4.6	10.8	8.6
	6	4.3	6.7	6	3.3	10.2	7.3
	7	5.1	7.9			9.6	6.1	13.7	10.1
	8	5.8	9.2			9	4.8	13	8.8
	9	6.6	10.4			8.4	3.6	12.4	7.6	16.4	11.6
	10	7.3	11.7			7.8	2.3	11.8	6.3	15.7	10.3	19.6	14.3
	11	8.1	12.9					11.1	5.1	15	9.1	18.8	13.4
	12	8.8	14.2					10.5	3.8	14.3	7.8	18	11.8
JSW-63SR	5	6.1	12	16.3	10.6	23.2	17.7
	8	7.3	13.7	14.5	7.9	21.4	15
	7	8.6	15.5			19.7	12.4	26.6	19.5
	8	9.8	17.2			17.9	9.8	25	17
	9	11.1	19			16.2	7.2	23.3	14.4	30.4	21.7
	10	12.3	20.7			14.4	4.5	21.6	11.9	28.8	19.2	35.9	26.5
	11	13.6	22.5					19.9	9.3	27.1	16.7	34.4	24.1
	12	14.8	24.2					18.2	6.7	25.5	14.2	32.8	21
JSW-83SR	5	15	20.4	30.2	22.8	45.3	39.2
	8	18	24.6	26.9	17.6	41.9	33.9
	7	21	28.7			38.5	28.6	53.4	44.8
	8	24	32.9			35.1	23.2	29.9	39.3
	9	27	37.1			31.6	17.9	46.5	33.8	61.3	49.8
	10	30	41.2			28.2	12.6	43	28.4	57.7	44.2	72.5	60.1
	11	33	45.4					39.5	22.9	54.2	38.6	68.9	54.3
	12	36	49.6					36	17.5	50.6	33.1	65.3	48.6
JSW-105SR	5	30.3	45.4	59.9	44.5	92.1	75.5
	8	36.4	54.7	54.7	36.5	86.3	67.1
	7	42.6	63.8			80.6	58.7	111.9	88.8
	8	48.7	72.9			75	50.3	105.7	80
	9	54.9	82.2			69.2	41.9	9.5	71.2	129.9	100.4
	10	60.9	91.3			63.5	33.5	93.4	62.3	123.2	91.1	153.1	119.9
	11	67.1	100.4					87.2	53.5	116.6	81.8	146.1	110.2
	12	73.3	109.7					81.1	44.6	110.1	72.5	139	100.4
JSW-125SR	5	48.3	72.3	103.4	77.5	154.7	123.9
	8	56	86.4	92.8	59.8	143.6	106.9
	7	65.8	100.6			132.5	89.9	182.9	137.9
	8	75.5	114.8			121.4	72.9	171.3	121.6
	9	85.3	128.9			110.4	55.9	159.7	105.4	209	154.8
	10	95	143.1			99.3	38.9	158.1	89.1	196.9	139.3	245.8	189.4
	11	104.8	157.3					136.5	72.9	184.9	123.8	233.2	174.7
	12	114.5	171.4					124.9	56.6	172.8	108.3	220.6	159.9
JSW-140SR	5	74.7	113.6	177	135.4	258.7	219.4
	8	90.9	139.6	158.2	105.3	240.7	190
	7	107.1	165.6			222.7	160.6	306	245.9
	8	123.2	191.6			204.7	131.2	288.7	217.1
	9	139.4	217.6			186.7	101.8	271.5	177.3	356.2	274.8
	10	155.6	243.6			168.7	72.3	254.2	159.5	339.7	246.7	425.2	333.8
	11	171.7	269.6					237	130.7	323.2	218.5	409.5	306.3
	12	187.9	295.6					219.7	101.9	306.7	190.3	393.7	278.8
JSW-160SR	5	112.4	190.9	267.7	183	397.4	316.9
	8	137.4	229.9	239.4	140.3	369.6	273.5
	7	162.5	268.9	211.1	97.6	341.8	130.1	472.3	362.5
	8	187.6	307.9			313.9	186.7	444.9	318.3
	9	212.7	346.9			286.1	143.3	417.4	274.2	548.7	405.1
	10	237.8	375.9			258.3	99.8	389.9	230	521.6	360.2	653.3	490.3
	11	262.9	424.9					362.5	185.8	494.5	315.3	26.6	444.7
	12	287.9	463.9					335	141.7	467.4	270.3	599.9	399
JSW-210SR	5	238.1	366.6	543.7	446.3	816.8	712.8
	8	194.8	446.3	482.6	354.4	756.5	622.2
	7	351.5	526	421.5	262.6	696.2	531.7	970.9	800.7
	8	408.1	605.7			635.9	441.1	911.5	711.4
	9	464.8	685.5			575.6	350.6	852	622.1	1128.4	893.6
	10	521.5	765.2			515.4	260	792.6	532.8	1069.8	805.6	1347	1078.3
	11	578.1	844.9					733.1	443.5	1011.2	717.5	1289.3	991.5
	12	634.8	824.6					673.7	354.2	952.6	629.4	1231.5	904.7
JSW-240SR	5	377.2	509.68	684.48	552	1038.68	906.2
	8	452.64	611.8	609.04	449.88	963.24	804.08	1317.44	1158.28
	7	529	713	533.6	348.68	886.88	702.88	1241.08	1057.08
	8	603.52	815.12	458.16	246.56	812.36	600.76	1165.64	954.04	1519.84	1308.24	1874.04	1662.44
	9	679.88	918.16			736	498.64	1090.2	854.92	1443.48	1206.15	1797.68	1560.32
	10	755.32	1019.36			660.56	396.52	1014.76	750.72	1368.96	1104.92	1722.24	1459.12
	11	860.76	1121.48					939.32	648.6	1293.52	1002.8	1633.35	1356.08
	12	906.2	1223.6					863.88	546.48	1217.16	900.68	1571.36	1253.96
JSW-300SR	5	671.6	976.15
	8	805.92	1191.16	1210.72	788.44
	7	940.24	1366.2	1060.76	587.88	1762.72	1289.84
	8	1074.56	1561.24	911.72	370.76	1613.68	1072.72	2315.64	1774.68
	9	1208.88	1756.28			1464.64	855.6	2166.6	4557.56	2868.56	2259.52
	10	1343.2	1952.24			1315.6	639.4	2019.56	1341.36	2719.52	2043.32	3421.48	2745.28
	11	1477.52	2147.28					1867.6	1124.24	2569.56	1826.2	3291.52	2528.16
	12	1611.84	2342.32					1718.56	907.12	2420.52	1609.08	3122.48	2311.04
JSW-400SR	7	1690.04	2649.6
	8	1932	3028.64	2346	1127
	9	2173.04	3406.76	2078.28	706.56	3576.04	2204.32
	10	2414.08	3785.8	1809.64	286.12	3307.4	1783.88	4805.16	3281.64
	11	2656.04	4163.92			3038.76	1363.44	1536.52	2861.2	6034.28	4358.96
	12	2897.08	4542.96			2771.04	943	4268.8	2440.76	5766.56	3938.52	7263.4	543.36
	13	3139.04	4921.08					4000.16	2019.4	5497.92	3517.16	6994.76	5014
	14	3380.08	5300.12					3732.44	1598.96	5230.2	3096.72	6727.04	4593.56
	15	3622.04	5678.24					3463.8	1178.52	4961.56	2676.28	6458.4	4173.12
	16	3863.08	6057.28							4692.92	2255.84	6189.76	3752.68

FAQ

Questions	Answers
What are the advantages of stainless steel pneumatic actuators over aluminum ones?	Stainless steel models excel in corrosion resistance, suitable for offshore, chemical, and food/pharmaceutical industries; aluminum models are more cost-effective for general environments.
Can JSW stainless steel actuators be used in food-grade applications?	Yes. Core parts are made of food-grade stainless steel, and seals (Viton/NBR) are non-toxic, meeting hygiene standards for food processing.
What international standards do these actuators comply with?	They meet ISO5211, DIN3337, VDINDE-3854, and NAMUR standards, ensuring compatibility with global valves and accessories.
What is the function of dual independent external adjustment bolts?	They allow ±5° calibration at both open and close directions, ensuring precise valve control and easy maintenance.